电催化剂
钴
催化作用
甲醇
限制电流
化学工程
化学
碳纤维
氧还原反应
氧气
限制
材料科学
无机化学
电化学
电极
有机化学
物理化学
复合材料
复合数
工程类
机械工程
作者
Jing Liu,Minglei Zhang,Lipeng Zhai,Yanjie Wang,Dian-Dian Han,Pengjing Chen,Na Qin,Liwei Mi,Liping Yang
标识
DOI:10.1016/j.jcis.2022.04.176
摘要
The development of high-efficiency and low-cost oxygen reduction electrocatalysts have become an urgent need to push fuel cells into practical application. Herein, an effective electrocatalyst Co/NC was successfully constructed, which was derived from abundant peanut shells, obtained by doping with cobalt ions and pyrolyzing in NH3 atmosphere. Due to the abundant Co-N active sites triggered by Co-N heteroatomic interface, the prepared electrocatalysts present excellent oxygen reduction reaction (ORR) performance with more positive half-wave potential (E1/2 = 0.83 V), incremental limiting current density (JL = 5.45 mA cm-2), higher durability and stronger resistance to methanol, which is superior to that of Pt/C (E1/2 = 0.81 V and JL = 5.19 mA cm-2). This work proposes a potential strategy to synthesize efficient ORR electrocatalysts to instead of Pt-based catalysts.
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