期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 22, 期 30, 页码 10326-10329出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201601535
关键词
carbon tubes; codoping; electrocatalysis; hydrogen evolution reaction; oxygen reduction reaction
资金
- NSFC [51232003, 21373108, 51571110, 21473089]
- 973 program [2013CB932902]
- Suzhou Science and Technology Plan Projects [ZXG2013025]
The technological combination of fuel cells with water electrolysis is an ideal approach to address the problems of growing energy needs and environmental pollution, in which exploring cheap and stable electrocatalysts is the main challenge. Sulfur and nitrogen codoped carbon tubes (SNCTs), prepared by annealing the mixture of amorphous carbonaceous tubes and cysteine, are found to be active bifunctional metal-free electrocatalysts for both oxygen reduction and hydrogen evolution in acidic medium. The optimized SNCT catalyst exhibits a record high onset potential of 851mV (vs. RHE) for oxygen reduction and concurrent a low overpotential of 76mV for hydrogen evolution, with superior stability and low cost. The SNCT electrocatalyst could have great potential in proton exchange membrane fuel cells and water splitting devices.
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