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

CORC > 兰州理工大学 > 兰州理工大学 > 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
刊名	JOURNAL OF COLLOID AND INTERFACE SCIENCE
	2019-12
卷号	557 页码:664-672
关键词	Metal-free catalyst Oxygen reduction reaction Hypercrosslinked polymer Porous carbon framework N-rich
ISSN号	0021-9797
DOI	10.1016/j.jcis.2019.09.069
英文摘要	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.
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
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000494056200066
状态	已发表
内容类型	期刊论文
源URL	[http://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
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.