Fe3C cluster-promoted single-atom Fe, N doped carbon for oxygen-reduction reaction

doi:10.1039/d0cp00109k

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	Fe3C cluster-promoted single-atom Fe, N doped carbon for oxygen-reduction reaction
	Lv, Mengyao ; Guo, Haichuan ; Shen, Hangjia ; Wang, Jun ; Wang, Jiacheng ; Shimakawa, Yuichi ; Yang, Minghui
刊名	PHYSICAL CHEMISTRY CHEMICAL PHYSICS
	2020
卷号	22 期号:14 页码:7218-7223
关键词	ACTIVE-SITES MESOPOROUS CARBON POROUS CARBON CATALYSTS ELECTROCATALYST NANOSHEETS NANOPARTICLES ACTIVATION BIOMASS GROWTH
DOI	10.1039/d0cp00109k
英文摘要	A key challenge in carrying out an efficient oxygen reduction reaction (ORR) is the design of a highly efficient electrocatalyst that must have fast kinetics, low cost and high stability for use in an energy-conversion device (e.g. metal-air batteries). Herein, we developed a platinum-free ORR electrocatalyst with a high surface area and pore volume via a molten salt method along with subsequent KOH activation. The activation treatment not only increases the surface area to 940.8 m(2) g(-1) by generating lots of pores, but also promotes the formation of uniform Fe3C nanoclusters within the atomic dispersed Fe-N-x carbon matrix in the final material (A-FeNC). A-FeNC displays excellent activity and long-term stability for the ORR in alkaline media, and shows a greater half-wave potential (0.85 V) and faster kinetics toward four-electron ORR as compared to those of 20 wt% Pt/C (0.83 V). As a cathode catalyst for the Zn-air battery, A-FeNC presents a peak power density of 102.2 mW cm(-2), higher than that of the Pt/C constructed Zn-air battery (57.2 mW cm(-2)). The superior ORR catalytic performance of A-FeNC is ascribed to the increased exposure of active sites, active single-atom Fe-N-C centers, and enhancement by Fe3C nanoclusters.
学科主题	Chemistry ; Physics
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/19802]
专题	2020专题
作者单位	1.Wang, JC (corresponding author), Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China. 2.Shen, HJ 3.Yang, MH (corresponding author), Chinese Acad Sci, Ningbo Inst Ind Technol, Inst New Energy Technol, Ningbo 315201, Peoples R China. 4.Yang, MH (corresponding author), Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China. 5.Wang, JC
推荐引用方式 GB/T 7714	Lv, Mengyao,Guo, Haichuan,Shen, Hangjia,et al. Fe3C cluster-promoted single-atom Fe, N doped carbon for oxygen-reduction reaction[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2020,22(14):7218-7223.
APA	Lv, Mengyao.,Guo, Haichuan.,Shen, Hangjia.,Wang, Jun.,Wang, Jiacheng.,...&Yang, Minghui.(2020).Fe3C cluster-promoted single-atom Fe, N doped carbon for oxygen-reduction reaction.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,22(14),7218-7223.
MLA	Lv, Mengyao,et al."Fe3C cluster-promoted single-atom Fe, N doped carbon for oxygen-reduction reaction".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 22.14(2020):7218-7223.