Strongly Cooperative Nano-CoO/Co Active Phase in Hierarchically Porous Nitrogen-Doped Carbon Microspheres for Efficient Bifunctional Oxygen Electrocatalysis

doi:10.1021/acsaem.9b01660

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	Strongly Cooperative Nano-CoO/Co Active Phase in Hierarchically Porous Nitrogen-Doped Carbon Microspheres for Efficient Bifunctional Oxygen Electrocatalysis
	Ding, Yajun 1,5; Yang, Weiyi 4; Gao, Shuang 4; Sun, Wuzhu 6; Sun, Caixia 2,3; Li, Qi 4
刊名	ACS APPLIED ENERGY MATERIALS
	2020-02-01
卷号	3 期号:2 页码:1328-1337
关键词	bifunctional electrocatalysts nano-CoO/Co active phase interfacial charges transfer oxygen reduction reaction oxygen evolution reaction
ISSN号	2574-0962
DOI	10.1021/acsaem.9b01660
通讯作者	Li, Qi(qiliuiuc@outlook.com)
英文摘要	The development of highly efficient, non-noble-metal-based bifunctional oxygen electrocatalysts with low cost for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is the key for the commercialization of rechargeable metal-air batteries and regenerative fuel cells. In this work, a non-noble metal-based, hierarchically porous CoO/Co@N-C microsphere electrocatalyst with low cost and earth-abundance was created by directly reducing carbonized glucose coated urchin-like Co3O4 microspheres through the carbon-thermal processing with NH3 reducing environment. Urchin-like Co3O4 microspheres provided a Co source for the creation of nano-CoO/Co active phase and served as the template without a removal requirement for the creation of hierarchically porous N-doped carbon microsphere matrix with abundant macropores and mesopores for efficient mass diffusion. Among its three major components, CoO played the leading role to provide both ORR and OER active sites, a porous N-doped carbon microsphere matrix mainly provided the conductive catalyst support, and the metallic Co component mainly acted as a "bridge" between CoO and graphic carbon to reduce the electron transfer resistance for the enhancement of its conductivity. Thus, their synergetic effect within its unique structure endowed a superior bifunctional performance toward both ORR and OER to the CoO/Co@N-C electrocatalyst over the commercially available Pt/C and Ir/C electrocatalysts.
资助项目	National Natural Science Foundation of China[51502305] ; National Natural Science Foundation of China[51672283] ; National Natural Science Foundation of China[51602316] ; Fundamental Research Funds for the Central Universities[A1920502051907-15] ; Shenyang National Laboratory for Materials Science[18LHPY009] ; State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals[18LHPY009] ; Liaoning Baiqianwan Talents Program ; Natural Science Foundation of Shandong Province, P. R. China[ZR2017MEM017]
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000516665300012
资助机构	National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Shenyang National Laboratory for Materials Science ; State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals ; Liaoning Baiqianwan Talents Program ; Natural Science Foundation of Shandong Province, P. R. China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/137814]
专题	金属研究所_中国科学院金属研究所
通讯作者	Li, Qi
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Qingdao Binhai Univ, Sch Mech & Elect Engn, Qingdao 266555, Peoples R China 3.Qingdao Binhai Univ, Key Lab New Metall Funct Mat & Adv Surface Engn U, Qingdao 266555, Peoples R China 4.Southwest Jiaotong Univ, Sch Mat Sci & Engn, Chengdu 610031, Peoples R China 5.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 6.Shandong Univ Technol, Sch Mat Sci & Engn, Zibo 255000, Peoples R China
推荐引用方式 GB/T 7714	Ding, Yajun,Yang, Weiyi,Gao, Shuang,et al. Strongly Cooperative Nano-CoO/Co Active Phase in Hierarchically Porous Nitrogen-Doped Carbon Microspheres for Efficient Bifunctional Oxygen Electrocatalysis[J]. ACS APPLIED ENERGY MATERIALS,2020,3(2):1328-1337.
APA	Ding, Yajun,Yang, Weiyi,Gao, Shuang,Sun, Wuzhu,Sun, Caixia,&Li, Qi.(2020).Strongly Cooperative Nano-CoO/Co Active Phase in Hierarchically Porous Nitrogen-Doped Carbon Microspheres for Efficient Bifunctional Oxygen Electrocatalysis.ACS APPLIED ENERGY MATERIALS,3(2),1328-1337.
MLA	Ding, Yajun,et al."Strongly Cooperative Nano-CoO/Co Active Phase in Hierarchically Porous Nitrogen-Doped Carbon Microspheres for Efficient Bifunctional Oxygen Electrocatalysis".ACS APPLIED ENERGY MATERIALS 3.2(2020):1328-1337.