Improving biomass-derived carbon with cobalt/cobalt oxide doping for oxygen reduction reaction

被引:6
作者
Hu, Shengnan [1 ]
Tan, Yi [1 ]
Feng, Chuanqi [1 ]
Wang, Shiquan [1 ]
Sun, Zhenguang [1 ]
Wu, Huimin [1 ,2 ]
Zhang, Guangxue [3 ]
机构
[1] Hubei Univ, Natl & Local Joint Engn Res Ctr High Throughput D, Hubei Collaborat Innovat Ctr Adv Organ Chem Mat,H, Minist Educ,Fac Phys & Elect Sci,Coll Chem & Chem, Wuhan 430062, Hubei, Peoples R China
[2] Nankai Univ, Minist Educ, Key Lab Adv Energy Mat Chem, Tianjin 300071, Peoples R China
[3] Hubei Univ Sci & Technol, Sch Nucl Technol & Chem & Biol, Xianning 437100, Peoples R China
基金
中国国家自然科学基金;
关键词
Carbon material; Biomass; High specific surface area; Oxygen reduction reaction; Cobalt doping; N-DOPED CARBON; METAL-FREE ELECTROCATALYST; HIGH-SURFACE-AREA; ONE-POT SYNTHESIS; ACTIVATED CARBON; POROUS CARBON; GRAPHENE; EVOLUTION; NANOPARTICLES; PERFORMANCE;
D O I
10.1007/s10008-019-04324-3
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Biomass-derived carbons from cypress leave, vegetable sponge, and pine needle were successfully prepared. They present three dimensional honeycomb structures. Electrochemical measurements showed that the carbon derived from vegetable sponge had the highest performance towards oxygen reduction reaction. Furthermore, the effects of cobalt content on carbon from vegetable sponge towards the oxygen reduction reaction were investigated, and the highest activities were obtained on vegetable sponge-Co-4%. It presented four-electron pathway on vegetable sponge-Co-4%. Meanwhile, vegetable sponge-Co-4% exhibited more positive half-wave potential (0.77 V) and onset potential (0.86 V) than those of vegetable sponge-Co-2% and vegetable sponge-Co-6%. And vegetable sponge-Co-4% displayed even superior stability and better tolerance to methanol crossover effects than the commercial Pt/C (20 wt% Pt).
引用
收藏
页码:2291 / 2299
页数:9
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