Porous carbon framework derived from N-rich hypercrosslinked polymer as the efficient metal-free electrocatalyst for oxygen reduction reaction

doi:10.1016/j.jcis.2019.09.069

IR > 石油化工学院

	Porous carbon framework derived from N-rich hypercrosslinked polymer as the efficient metal-free electrocatalyst for oxygen reduction reaction
	Yang, Zifeng; Han, Jingxin; Jiao, Rui; Sun, Hanxue; Zhu, Zhaoqi; Liang, Weidong; Li, An
	2019-12
发表期刊	JOURNAL OF COLLOID AND INTERFACE SCIENCE
ISSN	0021-9797
卷号	557 页码:664-672
摘要	The development of high-performance non-precious metal electrocatalysts is of great importance for construction of next generation fuel cells. Herein, we report for the first time the creation of new metal-free porous carbon framework catalysts derived from N-rich hypercrosslinked polymers (HCPs) using pyrrole as building blocks for oxygen reduction reaction (ORR) (denoted as PCF-HCPs). The PCF-HCPs obtained at the pyrolysis temperature of 900 degrees C (PCF-HCP-900), displayed outstanding catalytic activity towards the ORR compared with other PCF-HCPs pyrolysis temperature. Due to PCF-HCP-900 with large specific surface, excellent porosity and, importantly, exposed active sites caused by N doping with high density, the catalysts exhibited outstanding ORR activity in alkaline medium, i.e., the PCF-HCP-900 yielded a half-wave potential of 0.84 V, which was 10 mV higher than that of the state of-the-art Pt/C catalyst (0.83 V), and onset potential of 0.95 V (vs. RHE), a high diffusion limiting current density of 4.8 mA cm(-2), better methanol tolerance and long-term stability (2 mV negative shift after 3000 potential cycles) than commercial Pt/C. Furthermore, PCF-HCP-900 shows a favorable 4-electron transfer process (n approximate to 3.96) and lower H2O2 yield. Based on these merits, the PCF-HCP-900 may open a new possibility for design of ORR metal-free catalyst of fuel-cell technologies. (C) 2019 Elsevier Inc. All rights reserved.
关键词	Metal-free catalyst Oxygen reduction reaction Hypercrosslinked polymer Porous carbon framework N-rich
DOI	10.1016/j.jcis.2019.09.069
收录类别	SCI ; SCIE
语种	英语
资助项目	National Natural Science Foundation of China[21975113][51663012] ; Project of Collaborative Innovation Team, Gansu Province, China[052005] ; Innovation and Entrepreneurship Talent Project of Lanzhou[2017 -RC 33]
WOS研究方向	Chemistry
WOS类目	Chemistry, Physical
WOS记录号	WOS:000494056200066
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
EI入藏号	20193907467758
EI主题词	Oxygen reduction reaction
EI分类号	702.2 Fuel Cells - 802.2 Chemical Reactions - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 815.1 Polymeric Materials - 951 Materials Science
引用统计	被引频次：28[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/64216
专题	石油化工学院
通讯作者	Li, An
作者单位	Lanzhou Univ Technol, Coll Petrochem Engn, Dept Chem Engn, Lanzhou 730050, Gansu, Peoples R China
第一作者单位	石油化工学院
通讯作者单位	石油化工学院
第一作者的第一单位	石油化工学院
推荐引用方式 GB/T 7714	Yang, Zifeng,Han, Jingxin,Jiao, Rui,et al. Porous carbon framework derived from N-rich hypercrosslinked polymer as the efficient metal-free electrocatalyst for oxygen reduction reaction[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2019,557:664-672.
APA	Yang, Zifeng.,Han, Jingxin.,Jiao, Rui.,Sun, Hanxue.,Zhu, Zhaoqi.,...&Li, An.(2019).Porous carbon framework derived from N-rich hypercrosslinked polymer as the efficient metal-free electrocatalyst for oxygen reduction reaction.JOURNAL OF COLLOID AND INTERFACE SCIENCE,557,664-672.
MLA	Yang, Zifeng,et al."Porous carbon framework derived from N-rich hypercrosslinked polymer as the efficient metal-free electrocatalyst for oxygen reduction reaction".JOURNAL OF COLLOID AND INTERFACE SCIENCE 557(2019):664-672.