期刊
CHEMSUSCHEM
卷 14, 期 1, 页码 33-55出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.202002137
关键词
active sites; fuel cells; oxygen reduction reaction; transition metal-nitrogen-carbon catalysts; Zn-air batteries
资金
- National Natural Science Foundation of China [21878061]
This article discusses the importance of developing non-precious metal catalysts to accelerate the oxygen reduction reaction, introduces the potential of transition metal and nitrogen co-doped carbon materials in addressing energy challenges, and highlights the progress in optimizing their catalytic performance and current challenges.
Considering the urgent requirement for clean and sustainable energy, fuel cells and metal-air batteries have emerged as promising energy storage and conversion devices to alleviate the worldwide energy challenges. The key step in accelerating the sluggish oxygen reduction reaction (ORR) kinetics at the cathode is to develop cost-effective and high-efficiency non-precious metal catalysts, which can be used to replace expensive Pt-based catalysts. Recently, the transition metal and nitrogen co-doped carbon (M-N-x/C) materials with tailored morphology, tunable composition, and confined structure show great potential in both acidic and alkaline media. Herein, the mechanism of ORR is provided, followed by recent efforts to clarify the actual structures of active sites. Furthermore, the progress of optimizing the catalytic performance of M-N-x/C catalysts by modulating nitrogen-rich precursors and porous structure engineering is highlighted. The remaining challenges and development prospects of M-N-x/C catalysts are also outlined and evaluated.
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