Oxygen Evolution Activity of Co-Ni Nanochain Alloys: Promotion by Electron Injection

doi:10.1002/chem.201800044

	Oxygen Evolution Activity of Co-Ni Nanochain Alloys: Promotion by Electron Injection
	Yuan, Xiaotao 1; Riaz, Muhammad Sohail 1; Wang, Xin 1; Dong, Chenlong 1; Zhang, Zhe 1; Huang, Fuqiang 1,2
刊名	CHEMISTRY-A EUROPEAN JOURNAL
	2018
卷号	24 期号:15 页码:3707
关键词	cobalt electron injection nanochains nickel oxygen evolution reaction
ISSN号	0947-6539
DOI	10.1002/chem.201800044
英文摘要	Metal alloy nanoparticles have shown promising applications in electrocatalysis. However, the nanoparticles usually suffer from limited charge-transfer efficiency, which can be solved by preparing one-dimensional materials. Herein, Co-Ni alloy nanochains are prepared by a direct-current arc-discharge method. The nanochains, comprised of mutually coupled uniform nanospheres, can range up to several micrometers in size. When the alloy is exposed to air or under the electro-oxidation process, a metal-metal-oxide heterostructure is obtained. The alloy can inject electrons into the oxide, which makes it more suitable for electrocatalysis. The composition of the samples can be changed by varying the ratio of Ni/Co (i.e., Co, Co7Ni3, Co5Ni5, Co3Ni7, Ni) in the synthesis process. The nanochains show good oxygen evolution performance that correlates with the Ni/Co ratio. Co7Ni3 demonstrates optimal activity with an onset point of 1.50 V vs. reversible hydrogen electrode (RHE) and overpotential of 350 mV at 10 mAcm(-2). The alloy nanochains also show excellent durability with 95.0% current retention after a long-term test for 12 h.
学科主题	Chemistry, Multidisciplinary
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000427243200012
资助机构	This work was financially supported from the National Key Research and Development Program (Grant 2016YFB0901600), NSF of China (Grant 51672301), Science and Technology Commission of Shanghai (Grants 16JC1401700 and 16ZR1440500), the Key Research Program of Chinese Academy of Sciences (Grant QYZDJ-SSW-JSC013), and CAS Center for Excellence in Superconducting Electronics. ; This work was financially supported from the National Key Research and Development Program (Grant 2016YFB0901600), NSF of China (Grant 51672301), Science and Technology Commission of Shanghai (Grants 16JC1401700 and 16ZR1440500), the Key Research Program of Chinese Academy of Sciences (Grant QYZDJ-SSW-JSC013), and CAS Center for Excellence in Superconducting Electronics.
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25098]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China 2.Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China 3.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Xiaotao,Riaz, Muhammad Sohail,Wang, Xin,et al. Oxygen Evolution Activity of Co-Ni Nanochain Alloys: Promotion by Electron Injection[J]. CHEMISTRY-A EUROPEAN JOURNAL,2018,24(15):3707, 3711.
APA	Yuan, Xiaotao,Riaz, Muhammad Sohail,Wang, Xin,Dong, Chenlong,Zhang, Zhe,&Huang, Fuqiang.(2018).Oxygen Evolution Activity of Co-Ni Nanochain Alloys: Promotion by Electron Injection.CHEMISTRY-A EUROPEAN JOURNAL,24(15),3707.
MLA	Yuan, Xiaotao,et al."Oxygen Evolution Activity of Co-Ni Nanochain Alloys: Promotion by Electron Injection".CHEMISTRY-A EUROPEAN JOURNAL 24.15(2018):3707.