Nitrogen and atomic Fe dual-doped porous carbon nanocubes as superior electrocatalysts for acidic H2-O_(2) PEMFC and alkaline Zn-air battery

作     者：Xiudong Shi Zonghua Pu Bin Chi Mingrui Liu Siyan Yu Long Zheng Lijun Yang Ting Shu Shijun Liao Xiudong Shi;Zonghua Pu;Bin Chi;Mingrui Liu;Siyan Yu;Long Zheng;Lijun Yang;Ting Shu;Shijun Liao

作者机构：The Key Laboratory of Fuel Cell Technology of Guangdong Province&the Key Laboratory of New Energy Technology of Guangdong UniversitiesSchool of Chemistry and Chemical EngineeringSouth China University of TechnologyGuangzhou 510641China Ballard Power Systems9000 Glenlyon ParkwayBurnaby V5J 5J8Canada 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2021年第30卷第8期

页      面：388-395,I0008页

核心收录：

学科分类：0808[工学-电气工程] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the National Natural Science Foundation of China(NSFC Project Nos.21776104,21476088) the National Key Research and Development Program of China(Project Nos.2016YFB0101201,2017YFB0102900) the Guangdong Provincial Department of Science and Technology(Project No.2015B010106012) the Guangzhou Science,Technology and Innovation Committee(Project Nos.201504281614372,2016GJ006) 

主　　题：Gaseous doping Fe-Nx sites Fe single atoms Oxygen reduction reaction Electrocatalysts 

摘      要：Air cathodes with high electrocatalytic activity are vital for developing H2/O_(2) proton exchange membrane fuel cells(PEMFC)and Zn-air ***,the state-of-the-art air cathodes suffer from either limited catalytic activity or high cost,which thus hinder their ***,we designed ZIF-8 derived nitrogen and atomic iron dual-doped porous carbon nanocubes as high-quality catalysts for ORR,through a novel gas-doping *** porous carbon nanocubic architecture and abundant Fe-Nxactive species endow ZIF-8 derived single atomic iron catalyst(PCN-A@Fe SA)with superior catalytic activity,and surpass Pt/C and a majority of the reported *** XAS and DFT calculations suggest that Fe2+N4 moieties are the main active centers that are favorable for oxygen affinity and OH*intermediate desorption,which can result in promising catalytic *** importantly,PCNA@Fe SA can achieve power density of 514 m W cm^(-2) as cathodic catalyst in a PEMFC and discharge peak power density of 185 m W cm^(-2) in an alkaline Zn-air *** outstanding performance is derived from both the high specific surface area and high-density of iron single atom in nitrogen doped nanocubic carbon matrix.