Perspective on High-Rate Alkaline Water Splitting
Perspective on High-Rate Alkaline Water Splitting
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DOI：
10.1021/acsmaterialslett.0c00536
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发表时间：
2021-01-11
影响因子：
11.4
通讯作者：
Li, Yat
中科院分区：
文献类型：
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作者：
Kou, Tianyi;Wang, Shanwen;Li, Yat
碱性水分解 (AWS) 代表了一种可持续的氢气产生技术。与质子交换膜水分解相比，AWS是一种经济的方法，因为非铂族金属基材料可以用作催化剂，并且避免使用昂贵的质子交换膜。尽管经济高效且本质活性的催化剂快速发展，在低电流密度（数十mA cm(-2)）下表现出破纪录的性能，但AWS在大电流密度（>400 mA cm(-2)）下的电池效率仍然有限。在这篇文章中，我们旨在分享我们对高速率AWS析氢和析氧催化剂的设计、催化剂性能评估中可能遇到的问题以及催化剂稳定性问题的思考。
Alkaline water splitting (AWS) represents a sustainable technology for hydrogen gas generation. In comparison to proton exchange membrane water splitting, AWS is an economical approach because non-platinum-group metal-based materials can be used as catalysts and it avoids the usage of expensive proton exchange membranes. Despite the rapid development of cost-effective and intrinsically active catalysts that showed record-breaking performances at low current density (tens of mA cm(-2)), the cell efficiency of AWS at large current density (>400 mA cm(-2)) is still limited. In this Perspective, we aim to share our thoughts on the design of hydrogen evolution and oxygen evolution catalysts for high-rate AWS, the possible problems in catalyst's performance evaluation, and the stability issues of catalysts.