Wagh Komal S, Mane Sagar M, Teli Aviraj M, Shin Jae Cheol, Lee Jaewoong
Department of Fiber System Engineering, Yeungnam University, 280 Dehak-Ro, Gyeongsan 38541, Republic of Korea.
Division of Electronics and Electrical Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea.
Micromachines (Basel). 2024 Nov 29;15(12):1450. doi: 10.3390/mi15121450.
The pursuit of efficient and economical catalysts for water splitting, a critical step in hydrogen production, has gained momentum with the increasing demand for sustainable energy. Among the various electrocatalysts developed to date, cobalt oxide (CoO) has emerged as a promising candidate owing to its availability, stability, and catalytic activity. However, intrinsic limitations, including low catalytic activity and poor electrical conductivity, often hinder its effectiveness in electrocatalytic water splitting. To overcome these challenges, substantial efforts have focused on enhancing the electrocatalytic performance of CoO by synthesizing composites with conductive materials, transition metals, carbon-based nanomaterials, and metal-organic frameworks. This review explores the recent advancements in CoO-based composites for the oxygen evolution reaction and the hydrogen evolution reaction, emphasizing strategies such as nanostructuring, doping, hybridization, and surface modification to improve catalytic performance. Additionally, it examines the mechanisms driving the enhanced activity and stability of these composites while also discussing the future potential of CoO-based electrocatalysts for large-scale water-splitting applications.
随着对可持续能源需求的不断增加，寻找用于水分解（制氢的关键步骤）的高效且经济的催化剂已成为研究热点。在迄今开发的各种电催化剂中，氧化钴（CoO）因其来源广泛、稳定性高和催化活性而成为一种很有前景的候选材料。然而，其固有的局限性，包括低催化活性和差的导电性，常常阻碍其在电催化水分解中的有效性。为了克服这些挑战，大量研究致力于通过与导电材料、过渡金属、碳基纳米材料和金属有机框架合成复合材料来提高CoO的电催化性能。本综述探讨了用于析氧反应和析氢反应的CoO基复合材料的最新进展，强调了诸如纳米结构化、掺杂、杂化和表面改性等提高催化性能的策略。此外，还研究了驱动这些复合材料活性和稳定性增强的机制，同时讨论了CoO基电催化剂在大规模水分解应用中的未来潜力。
