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Fe3C cluster-promoted single-atom Fe, N doped carbon for oxygen-reduction reaction
Lv, MY; Guo, HC; Shen, HJ; Wang, J; Wang, JC; Shimakawa, Y; Yang, MH
2020-04-14
Source PublicationPHYSICAL CHEMISTRY CHEMICAL PHYSICS
ISSN1463-9076
Issue14Pages:7218
SubtypeArticle
AbstractA 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.
DOI10.1039/d0cp00109k
WOS KeywordACTIVE-SITES ; MESOPOROUS CARBON ; POROUS CARBON ; CATALYSTS ; ELECTROCATALYST ; NANOSHEETS ; NANOPARTICLES ; ACTIVATION ; BIOMASS ; GROWTH
Language英语
WOS Research AreaChemistry ; Physics
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/28145
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Lv, MY,Guo, HC,Shen, HJ,et al. Fe3C cluster-promoted single-atom Fe, N doped carbon for oxygen-reduction reaction[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2020(14):7218.
APA Lv, MY.,Guo, HC.,Shen, HJ.,Wang, J.,Wang, JC.,...&Yang, MH.(2020).Fe3C cluster-promoted single-atom Fe, N doped carbon for oxygen-reduction reaction.PHYSICAL CHEMISTRY CHEMICAL PHYSICS(14),7218.
MLA Lv, MY,et al."Fe3C cluster-promoted single-atom Fe, N doped carbon for oxygen-reduction reaction".PHYSICAL CHEMISTRY CHEMICAL PHYSICS .14(2020):7218.
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