Review
Chemistry, Multidisciplinary
Dongkyu Kim, Lee Seul Oh, Jong Hyeok Park, Hyung Ju Kim, Seonggyu Lee, Eunho Lim
Summary: Water electrolysis is a technology for producing high-purity hydrogen fuels. Anion exchange membrane water electrolysis combines the advantages of alkaline water electrolysis and proton exchange membrane water electrolysis, making it highly attractive. However, the slow kinetics of the oxygen evolution reaction is a major obstacle for efficient water electrolysis. Therefore, the development of high-performance oxygen evolution reaction electrocatalysts is crucial for the commercialization and widespread use of water electrolysis systems.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Physical
Krystian Lankauf, Aleksander Mrozinski, Patryk Blaszczak, Karolina Gornicka, Justyna Ignaczak, Marcin Lapinski, Jakub Karczewski, Grzegorz Cempura, Piotr Jasinski, Sebastian Molin
Summary: Developing environmentally friendly and high-performance oxygen evolution reaction (OER) catalysts is crucial. Iron-doped strontium titanates synthesized in this study showed promising OER electrocatalytic performance in alkaline electrolyte, with STF50 exhibiting the best balance of electrochemical activity and chemical stability, making it a potential room temperature OER catalyst based on non-toxic and abundant elements.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Fan Meng, Penghui Ren, Zhongmin Li, Ruopeng Li, Yaqiang Li, Huiling Zhang, Anmin Liu, Veniamin Kondratiev, Oleg Levin, Jinqiu Zhang, Maozhong An, Peixia Yang
Summary: Developing transitional metal-based electrocatalysts with outstanding oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) performance is essential for energy-efficient alkaline water electrolysis. In this study, a group of heterostructured electrocatalysts constructed of nickel-based hydroxide (NiX(OH)x, X = Co, Fe) nanosheets decorated on copper phosphide nanowires arrays were fabricated. The optimized catalytic kinetics and regulated electrode-electrolyte microenvironment induced by the unique arrays nanostructure are the key factors promoting the desirable catalytic performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Review
Chemistry, Multidisciplinary
Chen Qiao, Yingying Hao, Chuanbao Cao, JiaTao Zhang
Summary: As an important semi-reaction process in electrocatalysis, the oxygen evolution reaction (OER) is closely associated with various reactions such as electrochemical hydrogen production, CO2 electroreduction, and electrochemical ammonia synthesis. Recent observations using in situ characterization technology have identified metastable high-valence metal sites as efficient catalytic sites for OER. This review focuses on the transformation mechanism of high-valence metal sites, particularly in transition metal materials (Co- and Ni-based), and summarizes the research progress in optimizing OER performance through the transformation process and role of high-valence metal sites. The challenges and prospects of designing high-efficiency OER catalysts based on this mechanism and new in situ characterizations are also discussed.
Review
Chemistry, Inorganic & Nuclear
Lan Sun, Qiaomei Luo, Zhengfei Dai, Fei Ma
Summary: Water electrolysis is crucial for hydrogen generation, requiring efficient electrocatalysts; Recent advancements include strategies like nanoarchitecturing and heteroatomic doping to enhance electrocatalyst performance; Challenges and opportunities lie ahead for improving water splitting performance.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Chemistry, Physical
Jong-Hwan Park, Jae Chul Ro, Su-Jeong Suh
Summary: FeCo nanoparticles with different surface-layer compositions were synthesized using the polyol method. The FeCo nanoparticles consist of an Fe-rich FeCo alloy core and a Co-rich FeCo oxide layer. Fe59Co41 (S4) exhibits the optimal intrinsic catalytic activity for an oxygen evolution reaction.
APPLIED SURFACE SCIENCE
(2022)
Review
Chemistry, Physical
Ye Zeng, Mengting Zhao, Zihao Huang, Weijie Zhu, Jiaxian Zheng, Qiu Jiang, Zhoucheng Wang, Hanfeng Liang
Summary: This article reviews recent progress in regulation strategies for reconstruction reactions in water electrolysis, including the mechanism of water electrolysis, critical factors of the reconstruction process, advanced characterization methods, and modulation strategies. The article highlights the effectiveness of regulating the reconstruction process to enhance catalytic performance of electrocatalysts, and discusses future challenges in surface-reconstructed catalysts for water electrolysis.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Feifei Dong, Lu Li, Ziqi Kong, Xiaomin Xu, Yaping Zhang, Zhenghui Gao, Biaokui Dongyang, Meng Ni, Quanbing Liu, Zhan Lin
Summary: The study investigates the performance of nickel-substituted perovskite Ba0.5Sr0.5Co0.8Fe0.2NixO3-δ as an OER catalyst, with BSCFN20 showing the best OER activity with low overpotential and Tafel slope. In water splitting experiments, using BSCFN20 as the anode and Pt/C as the cathode can achieve 50 mA cm(-2) with a low voltage, and BSCFN20||Pt/C remains stable for a long period, surpassing the state-of-the-art RuO2||Pt/C counterpart.
Review
Chemistry, Multidisciplinary
Cheng Wang, Liujun Jin, Hongyuan Shang, Hui Xu, Yukihide Shiraishi, Yukou Du
Summary: This article comprehensively reviews the significant role and promising applications of RuO2 and its derivatives in oxygen evolution reaction (OER), starting from the description of OER and detailing the electrocatalytic performance and strategies of RuO2, as well as the challenges and future prospects ahead.
CHINESE CHEMICAL LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Shangshang Zuo, Yuan Liao, Chenchen Wang, Aaron B. Naden, John T. S. Irvine
Summary: Perovskite-based catalysts for oxygen evolution reaction (OER) have tunable compositions and adaptable characteristics, but can suffer from limited atom utilization efficiency. This study demonstrates that exsolving cobalt nanoparticles from perovskite improves the OER performance, achieving higher mass activity and stability.
Article
Chemistry, Multidisciplinary
Liling Liao, Yuling Zhao, Haiqing Zhou, Dongyang Li, Ying Qi, Yong Zhang, Yang Sun, Qian Zhou, Fang Yu
Summary: This study demonstrates an interfacial engineering strategy to construct an efficient bifunctional electrocatalyst by growing N-doped WS2 nanoparticles on highly conductive cobalt nitride. The resulting catalyst shows remarkable activity for both hydrogen evolution and urea oxidation reactions in alkaline solutions, with high current density and long-term durability.
Article
Engineering, Environmental
Abhishek Meena, Pandiarajan Thangavel, Arun S. Nissimagoudar, Aditya Narayan Singh, Atanu Jana, Da Sol Jeong, Hyunsik Im, Kwang S. Kim
Summary: The self-supported oxovanadate-doped cobalt carbonate (VCoCOx@NF) on nickel foam (NF) is a high-performance catalyst for overall water splitting in alkaline-anionexchange-membrane-water-electrolyzer (AAEMWE). It shows excellent activity for both hydrogen and oxygen evolution reactions, reducing overpotentials and achieving overall water splitting at low cell voltages. The doping of V species enhances the HER and OER at the Co site, providing potential for large-scale hydrogen production utilizing V- and Co-based bimetallic oxide materials.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Ahmed Zaki Alhakemy, Nangan Senthilkumar, Yichun Ding, Junwei Li, Zhenhai Wen
Summary: The research presents a simple synthetic approach to prepare a bifunctional electrode for efficient electrolytic H-2 generation. The electrode exhibited significantly enhanced electrocatalytic activities for oxygen/hydrogen evolution reactions, achieving small overpotentials and excellent stability in alkaline electrolytes, making it a promising candidate for sustainable urban development.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Multidisciplinary
Priyanka Swarnkar, Daniel K. Sarfo, Amandeep Singh Pannu, Thomas Rainey, Thirumalachari Sundararajan, Anthony P. O'Mullane
Summary: The study shows that stainless-steel AISI316 is a suitable support electrode for a co-electrodeposited Ni-CeOx catalyst for the oxygen evolution reaction under alkaline conditions. Optimal OER performance is achieved through a cyclic voltammetric deposition method, with the catalyst layer undergoing significant changes post-OER.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Review
Chemistry, Multidisciplinary
Ahmed Badreldin, Aya E. Abusrafa, Ahmed Abdel-Wahab
Summary: Recent research interest has been focused on anionic point defect engineering of electrocatalytic surfaces, particularly in cobalt-based TMOs. Oxygen vacancy modulation shows promise in improving electrocatalytic activities and surface chemistry, offering potential for designing novel materials surpassing noble metal-based electrocatalysts.
Article
Biochemistry & Molecular Biology
Theodoros Tsolis, Konstantinos D. Papavasileiou, Spyridon A. Divanis, Vasilios S. Melissas, Achilleas Garoufis
JOURNAL OF INORGANIC BIOCHEMISTRY
(2016)
Article
Optics
E. P. Benis, M. Bakarezos, N. A. Papadogiannis, M. Tatarakis, S. Divanis, C. O. Broin, L. A. A. Nikolopoulos
Article
Electrochemistry
Rebecca K. Pittkowski, Daniel F. Abbott, Roman Nebel, Spyridon Divanis, Emiliana Fabbri, Ivano E. Castelli, Thomas J. Schmidt, Jan Rossmeisl, Petr Krtil
Summary: Pyrochlore oxides containing both iridium and ruthenium in the B-site are promising catalysts for the oxygen evolution reaction (OER) in acidic media. The coexistence of Ir and Ru in the B-site enhances the catalytic activity, and the observed OER activity scales with the Ir-Ru bond distance. The addition of iridium and ruthenium suppresses the effect of the A-site cation radius on OER activity.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Rebecca Pittkowski, Spyridon Divanis, Mariana Klementova, Roman Nebel, Shahin Nikman, Harry Hoster, Sanjeev Mukerjee, Jan Rossmeisl, Petr Krtil
Summary: Rational optimization of OER activity of catalysts based on LaNiO3 oxide is achieved by maximizing the presence of trivalent Ni in the surface structure. Theoretical predictions of high intrinsic OER activity structures related to LaNiO3 catalysts have been confirmed through the preparation of nanocrystalline LaNiO3-related materials. These materials show a dramatic improvement in OER activity and exhibit stable exfoliated surfaces in OER catalysis.
Article
Chemistry, Multidisciplinary
Tugce Kutlusoy, Spyridon Divanis, Rebecca Pittkowski, Riccardo Marina, Adrian M. Frandsen, Katerina Minhova-Macounova, Roman Nebel, Dongni Zhao, Stijn F. L. Mertens, Harry Hoster, Petr Krtil, Jan Rossmeisl
Summary: The main challenge for acidic water electrolysis is the lack of active and stable oxygen evolution catalysts based on abundant materials. This work presents a new design strategy for activating stable materials, deemed unsuitable due to their semiconducting nature. By adding both n-type and p-type dopants, the reactivity of the catalyst can be tuned to allow for oxygen adsorption and desorption under reaction conditions. Experimental verification on TiO2 suggests that co-substitution can be used to activate stable materials for acid water electrolysis catalysts.
Article
Chemistry, Physical
Spyridon Divanis, Adrian Malthe Frandsen, Tugce Kutlusoy, Jan Rossmeisl
Summary: Both RuO2 and IrO2 have shown high activity as OER catalysts, but DFT predictions have failed to explain the high activity of RuO2. The authors propose that this discrepancy is due to RuO2 utilizing a different reaction pathway compared to IrO2, which is supported by comparisons between experimental data, DFT data and the proposed reaction model.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Spyridon Divanis, Tugce Kutlusoy, Ida Marie Ingmer Boye, Isabela Costinela Man, Jan Rossmeisl
