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Hierarchical Ni-Fe layered double hydroxide/MnO2 sphere architecture as an efficient noble metal-free electrocatalyst for ethanol electro-oxidation in alkaline solution
Jia, Zhijun; Wang, Yi; Qi, Tao
2015
Source PublicationRSC ADVANCES
ISSN2046-2069
Volume5Issue:101Pages:83314-83319
Abstract

Ni-Fe layered double hydroxide (LDH) nanosheets and hierarchical Ni-Fe LDH@MnO2 spheres are synthesized by a facile and cost-effective approach for highly efficient ethanol electro-oxidation. The LDH@MnO2 microspheres display excellent catalytic activity and robust durability for ethanol electro-oxidation, compared with the Ni-Fe LDH nanosheets. According to the analyses for nitrogen adsorption isotherms and electrochemical impedance spectra (EIS), it is inferred that the performance enhancement could be attributed to the MnO2 increasing the concentration of OHads species on the Ni-Fe LDH surface. These OHads can react with C-1ad intermediate species to produce CO2 or water soluble products, releasing the active sites on LDH for further electrochemical reactions. Therefore, it is expected that an effective noble-metal free catalyst for ethanol electro-oxidation could be obtained by tailoring structure and properties of LDHs and their composites.

SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1039/c5ra15718h
Indexed BySCI
Language英语
WOS KeywordREDUCED GRAPHENE OXIDE ; METHANOL ELECTROOXIDATION ; OXIDATION ; NANOPARTICLES ; ELECTRODE ; PERFORMANCE ; NANOSHEETS ; MEDIA
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000362438300077
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19610
Collection湿法冶金清洁生产技术国家工程实验室
AffiliationChinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Jia, Zhijun,Wang, Yi,Qi, Tao. Hierarchical Ni-Fe layered double hydroxide/MnO2 sphere architecture as an efficient noble metal-free electrocatalyst for ethanol electro-oxidation in alkaline solution[J]. RSC ADVANCES,2015,5(101):83314-83319.
APA Jia, Zhijun,Wang, Yi,&Qi, Tao.(2015).Hierarchical Ni-Fe layered double hydroxide/MnO2 sphere architecture as an efficient noble metal-free electrocatalyst for ethanol electro-oxidation in alkaline solution.RSC ADVANCES,5(101),83314-83319.
MLA Jia, Zhijun,et al."Hierarchical Ni-Fe layered double hydroxide/MnO2 sphere architecture as an efficient noble metal-free electrocatalyst for ethanol electro-oxidation in alkaline solution".RSC ADVANCES 5.101(2015):83314-83319.
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