Electrochemical CO 2 reduction (CO 2 R) offers a promising pathway to decarbonize ethylene (C 2 H 4 ) production.
Catalytic amine-based CO 2 capture can enhance absorption and regeneration kinetics, but translating lab-scale performance into process-level savings remains challenging.
Metal-doped boron nitride shows good promise for thermocatalytic CO2 methanation; however, it suffers from poor thermal stability and limited metal dispersion. Herein, a thermally stable nickel-supported mesoporous carbon-doped boron nitride...
This review summarizes alkaline water electrolysis for industrial green hydrogen, highlighting catalyst design, AI/DFT optimization, and full-cell engineering to overcome mass-transport and durability limits toward high-current operation.
Pulsed electrochemical CO2 reduction has emerged as a strategy to extend electrolyzer lifetime by periodically interrupting reductive operation with short oxidative pulses. Here we investigate the effect of oxidative pulse potential, pulse frequency, and pulse duration on the selectivity and structural integrity of electrospun polymer-based silver gas diffusion electrodes over extended periods of operation. We show that the threshold potential for anodic dissolution of silver at 0.55 V vs. SHE defines an upper boundary for the pulse potential: pulses with a potential below this threshold enable periodic local acidification of the electrolyte in the vicinity of the catalyst promoting partial dissolution of (bi)carbonate precipitates, while pulses with a potential above the threshold drive a silver dissolution-redeposition cycle that restructures the catalyst into silver clusters promoting the hydrogen evolution reaction. Systematic exploration of the pulse parameter space identifies an optimal protocol consisting of 10-seconds-long oxidative pulses applied every 30 minutes, yielding a duty cycle exceeding 99%. Under these conditions, carbon product faradaic efficiency is maintained in the range of 70-80% over 100 hours of operation, representing a five-fold improvement in selectivity relative to continuous electrolysis. Our results demonstrate the potential of pulsed electrolysis to maintain high CO selectivity over long operational periods, thus representing an important step towards the industrialization of CO2 electrolysis.
Improving glycerol-to-lactic acid selectivity through three-step pulsed potential operation coupled with convective transport control.
Short-chain alcohols act as interfacial additives in sonicated emlusive water microdroplets, enabling enhanced production of H 2 O 2 , H 2 , CH 4 , CO, CO 2 , and small organics.
Interface and composition engineering boost quasi-1D BiSI photoanodes to record photocurrents, a near three-order-of-magnitude gain over prior reports.
Atomic scale modeling reveals the origin of the power-law relationship between the rate of the OER and the surface charge density in hematite photoanodes.
CO2 electrolysis to CO by solid oxide electrolysis cells (SOECs) is a promising route for producing sustainable chemicals and fuels using renewable electricity. La0.8Sr0.2Ga0.8Mg0.2O3-x (LSGM)-based electrolyte-supported cells (ESCs) are an attractive configuration in SOECs because they enable flexible electrode choices, offering industrially relevant current density, energy efficiency, and long-term stability at high temperatures. While ESCs with a thin LGSM electrolyte layer demonstrate high efficiency at a small size (1 W), the fabrication, assembly, and testing of large cells are challenging: cracks may form due to sintering stress, and uneven pressure distribution during mounting can cause failure. Here, we address these challenges through systematic engineering. A controlled stress-release sintering protocol prevents electrolyte cracking. A pressure distribution analysis and the subsequent addition of compressive buffer layers mitigate localized pressure and avoid structural failure. We obtain a 5 & times; 5 cm2 LSGM-based ESC that achieves 1 A cm-2 at 1.21 V and demonstrates 950 hour stability. Furthermore, we assemble a 5-cell stack that delivers a peak electrolysis power of 225 W, enabling a CO output of similar to 1.13 kg per day. This work establishes a scalable and mechanically reliable pathway for translating high-performance LSGM ESC concepts from single cells to stack-level operation under CO2 electrolysis conditions.
A core–shell structured Ni 1 Co 0.5 AlO x @Pt/ZSM-5 catalyst was designed, which achieved the synergistic enhancement of poisoning resistance and electron transfer efficiency via the precise modulation of Pt distribution and the ZSM-5 shell structure.
This TOC depicts an alkali metal-doped g-C 3 N 4 photocatalyst with tailored structural and optoelectronic properties for efficient solar fuel production, organic transformation, and environmental remediation.
2D/3D MoS 2 @Ni/SBA-15 heterostructures, formed by gas-phase sulfidation, shift Ni from methanation to 100% CO selectivity in RWGS. Confinement and Ni–Mo synergy suppress CH 4 and ensure high activity and stability.
A Co–N–C catalyst with a CoN 4-pyrrolic configuration excels in 2e-ORR/HPOR but lags in HPRR vs. CoN 4-pyridinic . The binding free energy of *OOH describes 2e-ORR/HPOR, while HPRR activity depends on the H 2 O 2 adsorption strength.
Efficient and selective CO 2 hydrogenation pathways are pivotal for tackling climate change while enabling sustainable energy solutions.
A phosphate modification strategy enhances the dispersion and thermal stability of Pd nanoparticles supported on Al 2 O 3 , while enabling efficient aromatic hydrogenation under hydrogen streams containing CO impurities.
Reactive sputtering of N 2 , through physical vapor deposition, fabricated N-containing Cu thin films that serve as an efficient alternative compared to metallic Cu for the electrochemical CO 2 reduction.
Editor-in-Chief, Shizhang Qiao, shares insights on EES Catalysis ’ progress and future directions for 2026.
Copper-based electrocatalysts are essential for the electrochemical reduction of CO2 to ethylene; however, preventing the rapid reduction of active Cu+ species and suppressing the competing hydrogen evolution reaction remain key challenges. Herein, we demonstrate that precursor engineering is a decisive strategy for modulating the electronic structure and catalytic selectivity of Cu nanoparticles (NPs). Using a scalable wet-chemical reduction method, we synthesized chloride-incorporated Cu NPs (Cu-Cl NPs) on a gram scale. In a large-area (25 cm2) membrane electrode assembly electrolyzer, the Cu-Cl NPs achieved a peak ethylene faradaic efficiency of 31% at 400 mA cm-2, markedly outperforming their sulfate-derived counterparts. Operando X-ray absorption fine structure analysis and in situ Raman spectroscopy revealed that chloride dictates the unique surface reconstruction, maintaining the Cu0/Cu1+ interface even at high current densities. These persistent Cl-stabilized Cu+ sites improved catalytic performance. This structural evolution steers the reaction pathway toward selective C2H4 formation by promoting C-C coupling over the competing hydrogen evolution reaction, highlighting the overlooked potential of precursor anions as functional dopants and offering a facile route to design robust electrocatalysts for industrial-scale CO2 valorization.
