The electrocatalytic performance of palladium nanoparticles (PdNPs) supported on rough graphite for the hydrogen evolution reaction (HER) was investigated. Chronopotentiometric deposition resulted in a homogeneous distribution of PdNPs across the substrate surface. Electrochemical analysis of electrodes with varying Pd loadings demonstrated that HER proceeds via the Volmer-Heyrovsky mechanism, with a loading of 43 µg/cm2 achieving notable catalytic performance. Impedance spectroscopy revealed that the experimental data are accurately described by a two-time-constant parallel equivalent circuit model. At this optimal loading, mass transfer resistance was markedly reduced, particularly at high overpotentials. Under these conditions, charge transfer resistance became the dominant factor influencing HER activity, highlighting the importance of loading-dependent kinetics in optimizing catalytic performance.
The Editor-in-Chief and the Editorial Office of Advanced Energy Conversion Materials (AECM) have retracted the following article: Jahangir MH, Nateghi SK. Environmental and Economic Impact of Employing Solar Chimney and Photovoltaic Cells in Buildings with Various Climates. Advanced Energy Conversion Materials. 2021; 2(2): 45-59. This article has been retracted at the request of the Editor-in-Chief. Following a journal-wide investigation, it was identified that this article falls outside the scope of the journal, and does not align with the thematic focus or subject matter requirements as outlined by the journal's editorial policies. The retraction is in accordance with the Committee on Publication Ethics (COPE) guidelines, ensuring the integrity of the publication record is maintained. As part of journal's ongoing efforts to improve the quality of publications, the editorial office will continue to rigorously conduct preliminary review and peer review to ensure that only manuscripts that align with the journal's scope and meet the highest academic standards are published. The editorial office sincerely apologize for any confusion or inconvenience this retraction may have caused.
The Editor-in-Chief and the Editorial Office of Advanced Energy Conversion Materials (AECM) have retracted the following article: Myradowich PA. Feasibility Study for the Use of an Autonomous Solar Photovoltaic Water-Lifting Installation in the Karakum Desert. Advanced Energy Conversion Materials. 2023; 4(2): 38-47. This article has been retracted at the request of the Editor-in-Chief. Following a journal-wide investigation, it was identified that this article falls outside the scope of the journal, and does not align with the thematic focus or subject matter requirements as outlined by the journal's editorial policies. The retraction is in accordance with the Committee on Publication Ethics (COPE) guidelines, ensuring the integrity of the publication record is maintained. As part of journal's ongoing efforts to improve the quality of publications, the editorial office will continue to rigorously conduct preliminary review and peer review to ensure that only manuscripts that align with the journal's scope and meet the highest academic standards are published. The editorial office sincerely apologize for any confusion or inconvenience this retraction may have caused.
The Editor-in-Chief and the Editorial Office of Advanced Energy Conversion Materials (AECM) have retracted the following article: Abdallah H, Shalaby MS, Shaban AM. Design of Low Energy Integrated Membranes Units for Production of Highly Purified Water. Advanced Energy Conversion Materials. 2020; 1(1): 1-14. This article has been retracted at the request of the Editor-in-Chief. Following a journal-wide investigation, it was identified that this article falls outside the scope of the journal, and does not align with the thematic focus or subject matter requirements as outlined by the journal's editorial policies. The retraction is in accordance with the Committee on Publication Ethics (COPE) guidelines, ensuring the integrity of the publication record is maintained. As part of journal's ongoing efforts to improve the quality of publications, the editorial office will continue to rigorously conduct preliminary review and peer review to ensure that only manuscripts that align with the journal's scope and meet the highest academic standards are published. The editorial office sincerely apologize for any confusion or inconvenience this retraction may have caused.
Reducing greenhouse gas emissions is a target for many industries to achieve the United Nations Sustainable Development Goals' energy objectives and to reach Net Zero. Hydrogen has been identified as a potential energy carrier with almost zero emissions. However, there are challenges in safety during the storage and transportation of hydrogen. This paper provides an insight into various storage technologies and transportation methods, along with their limitations and potential applications. Highly compressed hydrogen requires high-pressure storage tanks that necessitate special materials and enhanced safety measures to prevent leakage or explosion. Liquid hydrogen requires cryogenic temperatures (-253.0 °C) and requires super-insulated tanks to minimise heat loss and reduce the boil-off ratio. Currently, the most viable solution for storing hydrogen safely is the absorption process, which utilizes Metal Hydride (MH) tanks. In addition to transporting hydrogen using tanks and cylinders, it can also be transported via pipelines. API X65 material can be used to transport hydrogen in the subsea. However, more research is required on the material for safely storing hydrogen in cylinders and innovative sensors to detect any leakage immediately.
