Developing efficient and durable electrocatalysts for oxygen reduction (ORR) and oxygen evolution reactions (OER) is crucial for energy conversion technologies. In this study, core-shell graphene quantum dot (GQD) composites embedded with Co, Zn, and CoZn alloy nanoparticles were synthesized using a solid-state microwave synthesis method and systematically investigated for their electrochemical performance. The structural and compositional analyses confirm that the integration of transition metal nanoparticles enhances the electronic properties of GQDs, providing abundant active sites and facilitating charge transfer. Electrochemical characterization reveals that GQD-CoZn-3 (GQD:Co:Zn = 10.5:0.5:0.5) exhibits superior ORR and OER catalytic activities, achieving the highest current densities of 205 A g-1 and 102 A g-1 at 100 mV s-1, respectively. These performance values surpass those of pristine GQDs and single-metal (Co or Zn) embedded counterparts, emphasizing the strong synergistic effect between the CoZn alloy and the functionalized carbon framework. Impedance measurements further reveal a substantial reduction in charge-transfer resistance, while chronoamperometry tests demonstrate excellent catalytic stability and CO tolerance, highlighting the robustness of the core-shell GQD structure. These findings provide valuable insights into the design of advanced carbon-based electrocatalysts for energy applications.

The development of solid-state lithium-ion batteries (SSLBs) with high energy density and long-term stability at elevated temperatures is critical for next-generation energy storage applications. In this study, we investigated the cyclic stability of soft-pack SSLBs employing Ni-rich NCM622 cathodes, artificial graphite anodes (MG11), and NASICON-type Li1.3Al0.3Ti1.4Sn0.3(PO4)(3) (Sn-LATP) ceramics incorporated into composite solid electrolytes (CSEs). Compared to pristine LATP-based cells, the NCM622||Sn-LATP||MG11 pouch cell delivered superior discharge capacities (151 mAh & centerdot;g(-1) at the 10th cycle vs. 123 mAh & centerdot;g(-1) at 1C) and markedly improved retention (similar to 55.8% after 300 cycles at 60 degrees C). Electrochemical impedance spectroscopy and Li-ion diffusion coefficient (D-Li) analysis confirmed that Sn-LATP ceramics alleviate resistance buildup and promote faster Li+ transport. Structural characterization demonstrated that Sn doping suppresses lattice distortion in NCM622 cathodes and minimizes Li deposition on MG11 anodes, while X-ray photon spectroscopy revealed significant suppression of transition-metal dissolution and crossover. These findings highlight that Sn doping not only enhances the intrinsic ionic conductivity of NASICON electrolytes but also improves electrode-electrolyte interfacial stability, thereby enabling high-performance SSLBs under demanding thermal conditions.

The growing demand for efficient CO2 conversion technologies in electrochemical systems has spurred the development of advanced catalysts and membrane designs. This study investigates the impact of hydrogen-rich (H-rich) skin layers, created through barbituric acid (BTA) modification, on the catalytic performance of Pt-based and high-entropy alloy (HEA) catalysts in anion exchange membrane (AEM) water electrolysis systems. The results show that BTA-modified Pt and HEA catalysts significantly enhance CO2 conversion efficiency, achieving a maximum current density of 395 mA cm-2 at 3 V and 40 degrees C, alongside a CO2 removal rate of 39.3%. The H-rich skin layer on the catalysts enhances surface hydrophilicity, increasing water molecule affinity and facilitating higher surface concentrations of H2O and CO2, thereby accelerating crucial reaction steps in CO2 reduction. Furthermore, these skin layers enhance ionic transport via hydrogen-bonding interactions, optimizing both the oxygen evolution reaction at the anode and CO2 reduction at the cathode. These findings suggest that the synergistic effects of H-rich skin layers and HEA catalysts offer a promising strategy for improving the efficiency of electrochemical CO2 conversion processes, providing valuable insights into the design of high-performance AEM systems.

This study aimed to investigate the robust design of composite solid electrolytes (CSEs) for high-performance lithium-metal batteries by incorporating metal-doped Li1.5Al0.5Ti1.5(PO4)(3) (LATP) powders into a soft polymer matrix with a lithium salt. These batteries utilize ternary LiNi0.5Co0.2Mn0.3O2 (NCM523) materials as the cathode. LATP powders were modified via doping with various bimetallic ions (Co, Cu, and Sn) and synthesized through the sol-gel method followed by thermal calcination, serving as highly ionic conductors in the CSEs. Li symmetric cells with Sn-LATP electrolytes demonstrated stable cycling for up to 600 cycles without short circuits. The Li-metal batteries with Sn- doped LATP powder CSEs exhibited exceptional electrochemical stability across a wide voltage range of 2.8-4.3 V vs Li/Li+. The battery with the Sn-LATP CSE achieved notable performance, with capacity retentions of 94.5% (0.5C), 87.3% (1C), 72.5% (2C), and 57.1% (3C) relative to its capacity at 0.1C. The inclusion of Sn-LATP powders in the CSEs enhanced both high-rate capability and cyclic stability compared to other LATP variants. The Sn-LATP-containing CSE exhibited a lithium diffusion coefficient and ionic conductivity of up to 2.89 & times; 10(-10) cm(2) s(-1) and 4.24 & times; 10(-4) S cm(-1), respectively, approximately 70.5 and 17.1 times higher those of the pristine PVDF-HFP sample. Notably, the Li-metal battery with Sn-LATP CSE maintained superior cyclic performance with excellent Coulombic efficiency (>99.3%) over 300 cycles. At a high power density (902 W kg(-1)), the NCM523||Sn-LATP||Li battery achieved an impressive energy density of approximately 230 W kg(-1). The higher electronegativity of Sn (similar to 1.96) compared to Co and Cu played a critical role in stabilizing the NASICON framework, especially during extended cycling, while the robust Li-Sn bonding further enhanced performance. These results underscore the potential of Sn-LATP fillers to enhance high-performance solid-state electrolytes, enabling improved energy and power densities with stable cycling in Li-metal batteries.

The fabrication of sustainable packaging films based on chitosan/starch (CTS/Starch) blends, reinforced with Chitosan Nanoparticles (CNPs), was achieved via the casting blend technique. This research explored the impact of varying CNPs loading on critical physicochemical properties, including water vapor permeation (WVP), thermal stability, and mechanical strength. To elucidate the structural and chemical complexities of the blend films, surface morphology was investigated via Scanning Electron Microscopy (SEM), internal architecture was visualized using Transmission Electron Microscopy (TEM), and molecular interactions were probed through Fourier Transform Infrared (FTIR) spectroscopy. The reduction in WVP from 6.18 ± 0.54 to 5.38 ± 0.93 g.m-1.s-1.pa-1, equilibrium moisture content (EMC) from 16.52 ± 1.03% to 12.5 ± 1.05%, and water absorbency (WA) from 340 ± 1.63% to 88.65 ± 1.12% in CTS/Starch blend films demonstrated loaded with (0-8 wt%) CNPs loading. Concurrently, films with 2-8 wt% CNP loading exhibited an increase in opacity from 2.38 ± 1.01 mm-1 to 4.83 ± 0.83 mm-1, accompanied by a decrease in transmittance from 89.20 ± 0.50% to 79.70 ± 1.20%. These findings collectively indicated that the CNP-incorporated chitosan/starch composites offer enhanced ultraviolet light shielding and improved water barrier capabilities compared to the non-reinforced chitosan/starch films, underscoring their promising utility in food and pharmaceutical packaging applications.

The configuration of solid-state pouch cells combines ternary cathodes (LiNi0.8Co0.1Mn0.1O2 (NCM811)), artificial graphite anodes, and Li1+xAlxTi2‒x(PO4)3 (LATP)-containing composite solid electrolytes (CSEs), capable of offering excellent cyclic performance with high energy/power densities. The ionic conductors in CSEs tin-doped LATP powders were fabricated using sol gel method and thermal calcination. The deviated lattice parameters in the NASICON-type due to tin metal doping, which enhance the stability of the NASICON framework. Next, the pouches cell was assembled using equipped with NCM811 cathodes exhibits an improved rate capability and excellent cyclic stability. The capacity retention of pouch cell achieves as high as 95 % with high Coulombic efficiency (∼99.2%) over 150 cycles. The electrochemical impedance analysis reveals that the equivalent series resistance is significantly reduced to 1.85 Ω through the aid of Sn-LATP powders. The diffusion coefficient in the cell configuration is determined to be 4.86 × 10-9, about 8.85 times higher than that of pristine LATP powders. The performance comparison reveals that the solid-state pouch cell achieves a high energy density of 335 Wh kg-1 at low power density (36 W kg-1) and maintains ∼173 Wh kg-1 even at 720 W kg-1. The optimized cell configuration, consisting of NCM811 cathodes, graphite anodes, hierarchical CSEs with Sn-LATP demonstrates several key advantages. The Sn-LATP-containing CSEs achieve enhanced contact with cathode active materials, leading to improvements in energy density, cycling stability, and high-rate capacity. This safety test demonstrates the fully-charged cell, even when deliberately damaged, shows no signs of smoking, flame, and explosion, indicating excellent safety characteristics of pouch cell under short-circuit conditions. The successful design of Sn-LATP-enhanced CSE layers represents a promising approach for developing next-generation solid-state energy storage devices.

Solid-state lithium batteries (SSLBs) are promising next-generation energy storage systems due to their enhanced safety, high energy density, and potential for long cycle life compared with conventional liquid-electrolyte Li-ion batteries. Here, we design and evaluate composite solid electrolytes (CSEs) based on dual-phase garnet-type Li6.4La3Zr1.4Ta0.6O12 (LLZTO) and NASICON-type Li1.3Al0.3Ti1.7(PO4)(3) (LATP), implemented in pouch cells using Ni-rich LiNi0.8Co0.1Mn0.1O2 (NCM811) cathodes and MG11 artificial graphite anodes. XRD, SEM, and Raman analyzes confirm the coexistence of both crystalline phases in homogenized composite powders, forming a percolative Li+-transport network. Electrochemical impedance spectroscopy shows that the LATP-LLZTO CSE lowers equivalent series resistance to 2.45 Omega, outperforming single-phase LATP (4.35 Omega) and LLZTO (3.05 Omega). Pouch cells with LATP-LLZTO deliver 184 mAh g(-1) at 0.1 C, retain 54.6% capacity at 2 C, and maintain >70% capacity after 800 cycles at room temperature. The dual-phase electrolyte yields a Li+ diffusion coefficient of 7.09 & times; 10(-10) cm(2) s(-1) and passes severe safety tests, showing no thermal runaway even when fully charged pouch cells are cut. Ragone analysis indicates power densities up to similar to 400 Wh kg(-1) at 700 WL-1, highlighting the strong synergistic effect of LATP and LLZTO. The results proved that Garnet-NASICON hybrid electrolytes enable safe.

This study adopts an induction heating technique (i.e., infrared carbonization (IRC)) to synthesize functionalized graphene quantum dots (GQDs) with different dopants, including N, B, and S atoms. The as-synthesized GQDs were employed as biomarkers in plants (lettuce and Chinese cabbage) and as sensing probes for detecting glucose in aqueous solutions. The IRC method is highly adaptable for in situ doping of various atoms within the graphitic framework of GQDs. Remarkably, adsorption of glucose on as-prepared GQDs enhances the photoluminescent (PL) efficiency (up to similar to 7.3 fold) from the GQD suspensions under UV illumination. The GQD-(glucose) x intermediates exhibit enhanced PL performance through an aggregation-induced emission (AIE) mechanism, particularly when hydrophilic GQDs accumulate. The AIE effect becomes more pronounced as GQD aggregation increases, resulting in progressively enhanced fluorescence in the presence of glucose. This organized clustering confirms that the formation of GQD-(glucose) x intermediates plays a crucial role in enhancing photoluminescence through the AIE mechanism. The resultant AIE-enhanced GQD clusters demonstrate exceptional luminous characteristics, providing them desirable for applications in sophisticated bioimaging and sensing technologies.

This study explores the use of Sn-doped sodium superionic conductor (NASICON)-type Li1+x Al x Ti2-x (PO4)3 (LATP) electrolytes in solid-state pouch cells with Ni-rich ternary cathodes that exhibit high-rate capability, low inner resistance, and superior cyclability. The pouch cell configuration includes two types of Ni-rich NCM cathodes, LiNi0.5Co0.2Mn0.3O2 (NCM523) and LiNi0.6Co0.2Mn0.2O2 (NCM622), paired with artificial graphite anodes (MG11) and synthesized LATP-containing composite solid electrolytes (CSEs). These cells demonstrate superior cyclic performance with high energy and power densities. Sol-gel and thermal calcination produced highly ionic conductivity Sn-LATP powders for CSEs. The equivalent ionic radii of Sn4+ and Ti4+ in NASICON-type lattices reduce distortion, but Sn4+'s greater Pauling electronegativity (∼1.96) improves the stability. The Sn-LATP powders in CSEs enhance the high-rate capabilities and cyclic stability of the solid-state pouch cells. NCM523 and NCM622 pouch cells with cathode-equipped pouches showed enhanced rate capability, with NCM523 achieving 58.9% capacity retention at 3C to 0.2C and NCM622 achieving 91.1% retention and ∼99.5% Coulombic efficiency over 200 cycles. Sn-LATP powders dramatically lower ESR values, according to the equivalent circuit impedance analysis. The diffusion coefficients for NCM523||Sn-LATP||MG11 and NCM622||Sn-LATP||MG11 pouch cells are 2.18 × 10-8 cm2 s-1 and 1.47 × 10-8 cm2 s-1, respectively, while the energy densities of NCM523||Sn-LATP||MG11 and NCM622||Sn-LATP||MG11 pouch cells are 132 and 172 Wh kg-1 at high-power densities of 717 and 778 W kg-1, respectively. The optimum CSE layer design using Sn-LATP particles presented in this work may lead to enhanced solid-state energy storage devices.

Fire retardant and anti-electromagnetic construction material with nanoscale additives are suitable for contemporary buildings and infrastructures. This work adopts an effective homogenizing approach to develop nanocomposites for fire retardant and anti-electromagnetic construction coatings. The nanocomposites composed of two-dimensional (2D) hexagonal boron nitride (h-BN) sheets and zero-dimensional (0D) zinc oxide (ZnO) nanoparticles. Further, these nanocomposites (2D + 0D) were combined with a sodium metasilicate and gypsum matrix for evaluating the flame retardancy and EMI shielding properties. The enhanced flame retardancy and EMI shielding characteristics were observed, when utilized in construction coatings on both wooden and wallpaper substrates. The results of studies on fire injection at 1050 degrees C indicate that adequately engineered h-BN + ZnO nanocomposites significantly mitigate flame propagation and charring, consequently decreasing carbonization regions. Furthermore, thermal investigation of the nanocomposite coating showed extensive char residue (83.5%) at 800 degrees C, indicating increased thermal insulation due to the composite's excellent architectural design. Nanocomposite coatings exhibit a substantial reduction in both electromagnetic and electric fields, demonstrating their effectiveness in EMI shielding. Especially, h-BN:ZnO (3:1) coatings, suggested best fire coating (carbonization fraction) and higher electromagnetic absorption. This improved EMI shielding performance attributed to the design of the nanocomposites, which played a crucial role in tuning resistance and dielectric loss, primarily facilitating electromagnetic absorption by ZnO nanoparticles.

In this study, graphitic carbon nitride (g-C3N4) was modified using polydopamine (PDA) followed by deposition of CoFe2O4 quantum dots for the preparation of ternary Z-scheme heterostructure (CoFe2O4/PDA/g-C3N4; CFPDACN) using the bioinspired adhesion of PDA. The photocatalytic activity of CFPDACN was evaluated through the photodegradation of rhodamine B (RhB), using a household 12 W LED lamp. When exposed to visible light, CFPDACN exhibited better photocatalytic performance than the pristine g-C3N4, CoFe2O4, g-C3N4/PDA, and g-C3N4/CoFe2O4 heterojunctions. RhB underwent 99.85 % deterioration in 60 min in presence of CFPDACN. The enhanced photocatalytic efficiency of CFPDACN was attributed to the synergistic effect of enhanced light harvesting and rapid transport and separation of photo-generated carriers in the Z-scheme structure where PDA acted as an effective electron transfer mediator. The free radical scavenging experiment showed that center dot O-2(-) was the main active species responsible for the RhB degradation proving the ternary heterostructure exhibited a Z-scheme charge transfer mechanism. Moreover, the primary intermediates and degradation mechanism were investigated in detail. Additionally, CFPDACN demonstrated strong stability and reusability after multiple cycles. Using biomimetic polydopamine as an electron transfer mediator in the building of hybrid photocatalysts offers insight into creating novel and effective photocatalysts for environmental remedial applications.

Herein, one series of high-entropy alloys (HEAs) are synthesized via pulse liquid-phase microwave method and employed as efficient electrocatalysts towards the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in both acid and alkali electrolytes. The as-synthesized Pt-based HEA catalysts comprise Pt, Ni, Cu, Al, and Sn elements, where Pt content varies, with almost equal contents of other elements. The Pt content in HEA catalysts is as a crucial factor for the ORR and OER catalytic activity and long-term durability. The possible ORR and OER mechanisms on the HEA catalysts in acid and alkali electrolytes is proposed. The synergistic effect of multiple-doped HEA catalysts imparts the improved ORR/OER activity. Multielement in HEAs lower the ORR/OER energy barrier and this is speculated to be the rate-determining stage in the entire catalytic process. Thus, the robust design of low-Pt-content HEA catalysts (i.e., 5–10 at

In this study, NASICON-type Li1+xAlxTi2-x(PO4)(3) (LATP) solid-state electrolyte was modified by doping various metal ions, which have ability to enable the LiFePO4 (LFP) cathode performance and exhibited superior cyclic stability and high ionic conductivity. The modification was performed using an altered sol-gel technique and a thermal calcination process. The presence of metallic dopants alters the lattice constant (0.131-0.534%), suggesting partial intercalation of the dopants into the rhombohedral R3c NASICON-type crystals. Among these metallic dopants, the insertion of Sn dopant in the LATP lattice tends to easily impart more migration pathways, favoring the ionic migration in the solid solution. The ionic conductivity of composite solid electrolytes (CSEs) containing Sn doped LATP powders displayed an ionic conductivity as high as 3.66 x 10(-4) S cm(-1) at ambient temperature. With the aid of Sn doped LATP conductive ceramics, the solid-state Li battery exhibited high-rate capability at 5C and excellent Coulombic efficiency (>98.9%) with superior cyclic stability at 600 cycles. To evaluate its real performance, a pouch cell consisted of LFP- and LiNi0.5Co0.2Mn0.3O2-supported CSEs (with Sn-LATP powders) and graphite anode was assembled, capable of offering excellent cyclic performance with a high specific energy of ca. 125 and ca. 225 Wh kg(-1), respectively. The robust design of CSEs, with the aid of fast Li+ NASICON-type ceramics, established a conductive ionic pathway that facilitates Li+ ionic transport was inferred within the electrolyte and utilized Li+ ionic conduction pathway facilitated Li+ transport while reducing interfacial electrolyte/electrode resistance in batteries.

Nowadays, the food industry is prioritizing many innovative processing technologies that can produce minimally processed foods with superior and higher quality, lower costs, and faster operations. Among these advancements, cold plasma (CP) processing stands out for its remarkable capabilities in food preservation and extending the shelf life. Beyond its established role in microbial inactivation, CP has emerged as a transformative tool for modifying food biomolecules through reactive plasma species, addressing the versatile requirements of food industries for various applications. This review focuses on the interactions between reactive plasma species and essential food macromolecules, including proteins, lipids, and polysaccharides. The novelty lies in its detailed examination of how CP technology triggers structural, functional, and biochemical changes in proteins and lipids and explains the mechanisms involved. It connects fundamental molecular transformations to practical applications, such as enhanced protein functionality, lipid stabilization, and improved oxidative resistance. CP induces alterations in protein structure, especially in amino acid configurations, that can be applicable to the formulation of advanced gel, 3D printing, thermostable emulsions, enhanced solubility, and sensory materials. This review explores the ability of CP to modify protein allergenicity, its different effects on the mechanical and interfacial properties of proteins, and its role in the production of trans-fat-free oils. Despite its potential, a detailed understanding of the mechanism of CP’s interactions with food macromolecules is also discussed. Furthermore, this review addresses key challenges and outlines future research opportunities, positioning CP as a sustainable and adaptable approach for innovating next-generation food systems. Further research is crucial to fully understand the potential of CP for food processing, followed by product development.

This study utilizes a pulse microwave-assisted technique to develop Pt and Pt-based high-entropy alloy (HEA) catalysts. The resulting catalysts exhibited remarkable catalytic activities and exceptional durability in hydrogen adsorption/desorption, oxygen reduction reaction (ORR), and oxygen evolution reaction (OER). During the synthesized process, the growth temperature emerges as a critical factor influencing the average particle size, crystallinity, and deposition rate of nanoparticles on the oxidized carbon support. The results indicate that Pt nanoparticles synthesized at a temperature of 100 degrees C display an elevated number of active sites for hydrogen adsorption and desorption. The Arrhenius plot reveals an apparent activation energy of 10.2 kJ mol-1 (2.4 kcal mol-1), which is substantially lower than the previously reported values for Pt deposits synthesized using the chemical reduction approach. Furthermore, the pulse microwave heating method was employed to synthesize HEA catalysts on carbon supports. These HEA catalysts were identified as Pt42 & sdot;9Al6 & sdot;1Ni5 & sdot;6Cu22 & sdot;3Sn23.1 alloys. On the surface of the HEA, the presence of multiple metal dopants within the Pt-rich crystals enhances the number of oxygenated sites, improving catalytic stability. This enhancement is attributed to the lower electronegativity of Al, Ni, Cu, and Sn compared to Pt. The HEA catalyst not only demonstrates superior catalytic activity but also exhibits greater durability in both ORR and OER, as compared to pure Pt catalysts. Based on the analysis of linear sweep voltammetry and Tafel plots, the design of the HEA@C catalyst enables enhanced catalytic activity and a faster chemical redox kinetics in the ORR. Pulse microwave synthesis shows promise as a means for synthesizing HEA catalysts with sustained catalytic activity and long-term durability for fuel cell applications, without further treatments.

Nano-sized high-entropy materials (HEMs) recently received more attention to researchers due to their superior electrochemical catalytic properties. HEMs comprise at least five elements with or without metals and are synthesized through solid-state reactions and solution-mediated techniques. The presence of many elements in these HEMs result in a high mixing entropy and facilitates the formation of stable solid solutions in fundamental crystal structures. Herein, Pt-free high-entropy alloys (HEAs) were synthesized through facile and straightforward pulse microwave (PM) synthesis technique, which serve as efficient electrochemical catalysts for the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR). The PM synthesis method was conducted at an extremely low temperature (100 °C) without any external catalytic reagents. Using this PM technique, Cr18.2Zr13.5Ti5.3Co17.8Ni8.4Cu8.5Fe28.3 and Al15.3Mn18.2Ti3.7Co23.2Ni5.9Cu5.9Fe27.8 HEAs catalysts were synthesized with superior catalytic activity towards OER and ORR and compare its activities with pure Pt catalysts. The as-prepared HEAs also display an anti-CO poisoning effect and long-term durability, as compared to pure Pt catalysts. The low-temperature PM approach not only confirms the feasibility of synthesis of noble metal-free HEAs but also validates their superior catalytic activity towards OER and ORR, which is beneficial for the development of proton exchange membrane fuel cells and proton exchange membrane water electrolysis.

Carbon-based high-entropy materials represent an exclusive class of nanomaterials that incorporate several elements in their structural building and thereby possess a potential for energy storage applications. This multi-elemental composition exhibits several beneficial properties, including improved stability, tunable photoluminescence, and catalytic activities. Herein, high-entropy carbon nanodots (HE CNDs) were synthesized and has a potential for metal-free electrocatalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in acid and alkaline electrolyte. Production of three different types of CNDs doped with dopants such as oxygen, nitrogen, boron, sulfur, and phosphorus was achieved by using an efficient solid-state microwave synthesis method from the pyrolysis of carbon and dopant precursors under a pulse microwave irradiation process at 250 °C. Catalytic electrodes based on the HE CND exhibit an exceptionally high electrochemically active surface area and durability under long-term operation, when catalyzing both ORR and OER activities in electrolytes. Both heteroatoms in the nanostructure of the CND and their sp3/sp2 hybridization level enhance both ORR and OER catalysis performance. The synthesized CNDs have high promise due to enhanced catalytic activity and superior durability as metal-free and cost-effective catalysts, making it have great potential applications in energy storage device fabrication, especially in fuel cells.

The fabrication of coated papers using hydrophilic and biodegradable polymers is important for developing sustainable packaging materials with high barrier and superior mechanical properties. However, water, which is used as the solvent in the paper coating process using hydrophilic polymers, deforms the shape of the paper and deteriorates performance. Therefore, we propose a new coating process that treats Kraft paper (KP) with epichlorohydrin (ECH) as a binder before the coating process. Crosslinked polyvinyl alcohol is coated on the ECH-treated KP using a solution casting method. ECH maintains the shape of the paper and improves coating uniformity; significantly enhances interfacial interactions, which increases barrier properties and sealing strength; and extends the shelf life of biscuits by reducing oxygen and moisture permeability. An ecotoxicity test using Lolium multiflorum demonstrates an insignificant phytotoxicity level for the as-prepared coated papers. Thus, ECH-treated KP is a potential candidate for high-barrier food packaging.