Article
Chemistry, Physical
Takeshi Nishimoto, Keisuke Obata, Hiroki Komiya, Takahiro Naito, Kazuki Harada, Masaaki Yoshida, Kazuhiro Takanabe
Summary: This study reports on oxidized copper and molybdenum species that catalyze the hydrogen evolution reaction (HER) in non-extreme pH carbonate buffer electrolytes. The presence of these species enhanced the electrocatalytic performance and enabled water electrolysis at non-extreme pH, exhibiting competitive cell performance with commercial electrolyzers. The findings highlight the significance of catalyst design and electrolyte conditioning.
Article
Energy & Fuels
Ho Tae Bang, Kyeong-Rim Yeo, Kyung Ji Choi, Won Suk Jung, Soo-Kil Kim
Summary: Proton-exchange membrane water electrolyzers require non-precious catalysts that are active and stable. This study fabricates Ni-Mo-P ternary alloy catalysts with a wide composition range and evaluates their activity and stability. The results show that the NiMoP catalyst with the optimal composition exhibits superior performance in both half and single cells, and the addition of corrosion-resistant P improves the catalyst stability.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Shujiao Yang, Jinxiu Han, Wei Zhang
Summary: This article introduces the importance of proton-coupled electron transfer (PCET) in energy conversion and water splitting, and prospects the future development of PCET in reaction mechanisms and electrocatalyst design.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Review
Thermodynamics
Shu Yuan, Congfan Zhao, Xiyang Cai, Lu An, Shuiyun Shen, Xiaohui Yan, Junliang Zhang
Summary: This review discusses the evolution and transport processes of gas bubbles, as well as the mechanisms by which bubbles impact PEMWE cell performance. It also summarizes the latest methods to mitigate bubble-induced performance losses. Similarities between PEMWE and AEMWE are explored, and principles of bubble management are presented, along with future research priorities and suggestions.
PROGRESS IN ENERGY AND COMBUSTION SCIENCE
(2023)
Article
Chemistry, Physical
Lisha Shen, Yan Shi, Taiwo Oladapo Ogundipe, Kai Huang, Shuo Cao, Zhuoxin Lu, Zhida Wang, Hongyi Tan, Changfeng Yan
Summary: In this study, hierarchical WMoC nano arrays with superhydrophilic surface and optimal crystal facet were synthesized, showing enhanced HER activity and stability. The PEMWE single cell based on WMoC cathode exhibited outstanding performance and great potential for application.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Multidisciplinary
Shenhao Chen, Chanjuan Xi
Summary: In this study, a CO2-promoted photoredox/Ni-catalyzed semi-reduction of alkynes has been achieved by combining photocatalysis and transfer hydrogenation using water as a hydrogen source. This novel method allows for the selective synthesis of alkenes from a range of aryl alkynes and alkynyl silanes.
Article
Nanoscience & Nanotechnology
Naduvile Purayil Dileep, Prasad Sarma, Ranjith Prasannachandran, Vishnu Surendran, Manikoth M. Shaijumon
Summary: The study demonstrated a synergistic nanostructured two-dimensional heterostructure formed by electrochemically exfoliated Co(OH)(2) and chemically derived 1T-MoS2, which greatly improved the HER activity in alkaline media. The Co(OH)(2)/1T-MoS2 heterostructure achieved a remarkably low overpotential and high Tafel slope in alkaline media, with a substantial increase in overpotential compared to the individual MoS2 component.
ACS APPLIED NANO MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Chao Cheng, Mingming Deng, Li Li, Zidong Wei
Summary: This article reviews the recent literature on the activity descriptors for the hydrogen evolution reaction (HER) and focuses on the contribution of water molecules in regulating the pH-dependent HER, including their dissociation, configuration, and composition. Additionally, it provides new insights into understanding the mechanism of HER through the interplay of interfacial water enrichment, orientation, and configuration with the electric field strength and electrode compositions.
SCIENCE CHINA-CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Biswajit Mondal, Soumitra Dinda, Neeta Karjule, Sanjit Mondal, Alagar Raja Kottaichamy, Michael Volokh, Menny Shalom
Summary: Electrolysis of water is a sustainable method to produce clean hydrogen, but it requires a high applied potential due to the pH-dependency of the hydrogen and oxygen evolution reactions. By combining proton-coupled electron transfer and single-electron transfer processes, we have achieved hydrogen production from water at low cell potentials by pH adjustment.
Article
Chemistry, Multidisciplinary
Sheng Zhao, Lijie Yin, Liming Deng, Junnan Song, Yu-Ming Chang, Feng Hu, Hui Wang, Han-Yi Chen, Linlin Li, Shengjie Peng
Summary: This study demonstrates the importance of rational heterointerface engineering for superior and robust hydrogen evolution reaction (HER). By constructing organic-inorganic hybrid heterojunctions, the researchers achieve strong electron coupling and optimal electronic structure for efficient HER. The resulting hybrid material exhibits low overpotentials and robust stability, making it a promising electrocatalyst.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Song Xue, Yunchang Liang, Shujin Hou, Yajing Zhang, Heqing Jiang
Summary: In this study, the alkaline hydrogen evolution reaction (HER) processes of three typical nickel-based electrocatalysts were investigated to understand the factors that determine their activity and durability. The results showed that coating Ni electrodes with α-Ni(OH)(2) nanosheets enhanced the activity and durability of the electrocatalysts.
Article
Chemistry, Physical
Lulu Chen, Yichao Huang, Yanping Ding, Ping Yu, Fang Huang, Wenbo Zhou, Limin Wang, Yangyang Jiang, Haitao Li, Hanqing Cai, Lin Wang, Hang Wang, Meihong Liao, Lianming Zhao, Zhuangjun Fan
Summary: An interfacial engineering strategy is employed to fabricate a low-Pt loading catalyst (Pt-MoCx@C) with atomically Pt-doped molybdenum carbide quantum dots decorated on conductive porous carbon for efficient and stable acidic hydrogen evolution reaction (HER) in proton exchange membrane water electrolysis (PEMWE). The Pt-MoCx catalyst exhibits a high mass activity of 8.00 A center dot mgPt-1, which is 5.6 times higher than that of commercial 20 wt.% Pt/C catalyst. The Pt-MoCx catalyst also demonstrates excellent HER stability and can last for over 2000 hours under a water-splitting current of 1000 mA center dot cm-2, suggesting its potential for practical applications.
Review
Chemistry, Physical
Martin Durovic, Jaromir Hnat, Karel Bouzek
Summary: This review focuses on the electrocatalysis of the hydrogen evolution reaction in alkaline and neutral environments, analyzing the current situation and discussing the potential industrial relevance of the studied materials. It also addresses the limitations of common parameters and provides a comprehensive comparison of catalyst activities based on composition and cation-related materials, presented in graphical form. Based on literature data, fundamental material characteristics for developing new catalysts for electrochemical water splitting are proposed.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Stefania Siracusano, Fausta Giacobello, Antonino S. Arico
Summary: Minimizing the use of high-cost metal electrocatalysts is crucial for cost-effective green hydrogen production by proton exchange membrane water electrolysis. This study developed a non-platinum group metal anode catalyst based on silver and titanium suboxide for the oxygen evolution reaction. The catalyst showed promising performance and excellent stability, making it a cost-effective alternative to noble metal catalysts.
JOURNAL OF POWER SOURCES
(2023)
Article
Engineering, Environmental
Rui-Qing Li, Xiao-Yu Wan, Bao-Li Chen, Ru-Yuan Cao, Qing-Hong Ji, Jie Deng, Kong-Gang Qu, Xue-Bin Wang, Ya-Chao Zhu
Summary: The new Ni3N/Ni0.2Mo0.8N/NF catalyst demonstrates multifunctional superior performance for overall water and urea electrolysis, requiring low overpotentials and ultrasmall potentials for hydrogen generation.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Yifan Sun, Ye Lv, Wei Li, Jinli Zhang, Yan Fu
Summary: In this study, PtRu electrocatalysts were fabricated on carbon paper via cyclic electrodeposition for the electrocatalytic hydrogenation (ECH) of phenol. The Pt3Ru3 catalyst exhibited excellent activity and stability for the conversion of phenol to cyclohexanol at ambient temperature and various current densities. The in situ Raman spectroscopy and kinetic study revealed the hydrogenation mechanism of phenol over Pt3Ru3 in acidic electrolyte, providing an effective electrochemical strategy for the facile construction of durable electrode materials and efficient phenol hydrogenation.
JOURNAL OF CATALYSIS
(2024)
Article
Chemistry, Physical
Amir Shahzad, Khezina Rafiq, Muhammad Zeeshan Abid, Naseem Ahmad Khan, Syed Shoaib Ahmad Shah, Raed H. Althomali, Abdul Rauf, Ejaz Hussain
Summary: Photocatalytic hydrogen production through water splitting is an effective method for meeting future energy demands. In this study, researchers synthesized a 1 % Ag2S/Cu2S co-doped CdZnS catalyst and found that it can produce hydrogen at a higher rate. The co-doping of Ag2S and Cu2S in the CdZnS catalyst showed a synergistic effect, with Ag2S promoting oxidation reactions and Cu2S promoting reduction reactions.
JOURNAL OF CATALYSIS
(2024)
