Balancing the Micro-Mesoporosity for Activity Maximization of N-Doped Carbonaceous Electrocatalysts for the Oxygen Reduction Reaction

被引:62
作者
Du, Cheng [1 ,3 ]
Liu, Xinlei [2 ]
Ye, Guanghua [2 ]
Gao, Xiaohui [1 ]
Zhuang, Zhihua [1 ,3 ]
Li, Ping [1 ,3 ]
Xiang, Dong [1 ,4 ]
Li, Xiaokun [1 ]
Clayborne, Andre Z. [5 ]
Zhou, Xinggui [2 ]
Chen, Wei [1 ,3 ]
机构
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, 5625 Renmin St, Changchun 130022, Jilin, Peoples R China
[2] East China Univ Sci & Technol, State Key Lab Chem Engn, Meilong Rd 130, Shanghai 200237, Peoples R China
[3] Univ Sci & Technol China, Jinzhai Rd 96, Hefei 230026, Anhui, Peoples R China
[4] Northeast Normal Univ, Fac Chem, 5268 Renmin St, Changchun 100049, Jilin, Peoples R China
[5] Howard Univ, Dept Chem, Washington, DC 20059 USA
基金
中国国家自然科学基金;
关键词
electrocatalysis; N-doped carbon; oxygen reduction reaction; porosity; Zn-air battery; ENHANCED CATALYTIC-ACTIVITY; ENERGY-CONVERSION; NITROGEN; PERFORMANCE; ALKALINE; FRAMEWORKS; STABILITY; COMPOSITE; CARBONS; ZIF-8;
D O I
10.1002/cssc.201802960
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Carbonaceous porous structures have instigated global research interest as promising low-cost electrocatalysts for numerous energy technologies. However, the rational design principle of pore structures for activity maximization is still unclear. In this work, a series of N-doped carbon (N-C) catalysts with exclusively different micro-mesoporosity are investigated for the oxygen reduction reaction (ORR). By combining the experiment results and a pioneering mathematical model, it was observed that the best catalytic activity can only be attained by balancing the micro-mesoporosity. These findings offer a definite criterion for pore structure optimization in carbon-based ORR catalysts, which is of great importance for various energy technologies.
引用
收藏
页码:1017 / 1025
页数:9
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