催化作用
氧还原反应
热解
钴
星团(航天器)
材料科学
金属
纳米技术
化学工程
氧还原
化学
物理化学
有机化学
电化学
电极
计算机科学
工程类
冶金
程序设计语言
作者
Ting He,Hui Xue,Xiaojuan Wang,Shuanghua He,Yulai Lei,Yuyuan Zhang,Rujuan Shen,Yi Zhang,Juan Xiang
出处
期刊:Nanoscale
[The Royal Society of Chemistry]
日期:2017-01-01
卷期号:9 (24): 8341-8348
被引量:46
摘要
A new strategy to fabricate CoNx single cluster supported nanocarbon catalysts (C/P/2Co600) with enhanced atomic utilization towards the oxygen reduction reaction (ORR) is reported. N-Coordination protection and low-temperature pyrolysis are the two key factors for the formation of CoNx single clusters on nanocarbon supports. Morphological and structural identification confirmed the simultaneous anchoring of homo-dispersed CoNx single clusters and N-doping on the nanocarbon under relatively mild thermal treatment conditions. Expectedly, the obtained single cluster catalyst with a trace amount of metal atoms exhibited excellent ORR performance including a positive half-wave potential (0.846 V), a high mass activity (0.98 A mgCo−1, ampere per milligram of cobalt) and outstanding chemical durability after 8000 potential cycles. We believe that our findings provide a new route for the rational design of low-cost and highly active ORR catalytic materials.
科研通智能强力驱动
Strongly Powered by AbleSci AI