Insights into efficient transition metal-nitrogen/carbon oxygen reduction electrocatalysts

• 作者: Hao-Yu Wang Chen-Chen Weng Zhong-Yong Yuan
• 来源期刊: 能源化学
• 年，卷（期）: 2021,（5）
• 页码范围: 470-485
• 页数: 16页
• 语种: 英文

摘要

It is of vital importance to accelerate the sluggish oxygen reduction reaction (ORR) process at the cathode with earth-abundant metal-based catalysts for the commercialization of low-temperature polymer electrolyte membrane fuel cells.In consideration of high catalytic activity,long-term stability and low cost of potential ORR electrocatalysts,transition metal species have attracted much interest and transition metal-nitrogen-carbon (M-N/C,M =Fe,Co,Ni,Mn,etc.) catalysts have been widely considered as the most promising non-precious metal catalysts for ORR.Herein,the fundamental understanding of ORR catalytic mechanism and the identification of active centers are briefly introduced,and then different M-N/C catalysts classified by precursors with the strategies for design and optimization are highlighted.The challenges and possible opportunity for future development of high-performance ORR catalysts are finally proposed.