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Strongly Cooperative Nano-CoO/Co Active Phase in Hierarchically Porous Nitrogen-Doped Carbon Microspheres for Efficient Bifunctional Oxygen Electrocatalysis
Ding, Yajun2,3; Yang, Weiyi1; Gao, Shuang1; Sun, Wuzhu4; Sun, Caixia5,6; Li, Qi1
Corresponding AuthorLi, Qi(qiliuiuc@outlook.com)
2020-02-01
Source PublicationACS APPLIED ENERGY MATERIALS
ISSN2574-0962
Volume3Issue:2Pages:1328-1337
AbstractThe 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.
Keywordbifunctional electrocatalysts nano-CoO/Co active phase interfacial charges transfer oxygen reduction reaction oxygen evolution reaction
Funding OrganizationNational 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
DOI10.1021/acsaem.9b01660
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaChemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS IDWOS:000516665300012
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/137818
Collection中国科学院金属研究所
Corresponding AuthorLi, Qi
Affiliation1.Southwest Jiaotong Univ, Sch Mat Sci & Engn, Chengdu 610031, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
4.Shandong Univ Technol, Sch Mat Sci & Engn, Zibo 255000, Peoples R China
5.Qingdao Binhai Univ, Key Lab New Metall Funct Mat & Adv Surface Engn U, Qingdao 266555, Peoples R China
6.Qingdao Binhai Univ, Sch Mech & Elect Engn, Qingdao 266555, Peoples R China
Recommended Citation
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.
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