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Atomically Dispersed CoN4/B, N-C Nanotubes Boost Oxygen Reduction in Rechargeable Zn-Air Batteries
Zhao, Ruopeng1,2; Chen, Jiangyue3; Chen, Zhijing2; Jiang, Xian1; Fu, Gengtao1; Tang, Yawen3; Jin, Wei4; Lee, Jong-Min1; Huang, Shaoming2
2020-05-26
Source PublicationACS APPLIED ENERGY MATERIALS
ISSN2574-0962
Volume3Issue:5Pages:4539-4548
Abstract

Minimizing the particle size of transition metals and constructing heteroatom-co-doped carbon with a high surface area are deemed imperative in maximizing the atomic utilization of carbon-based materials. Herein, the atomically dispersed Co sites anchored on interconnected B, N-doped carbon nanotubes (B, N, Co/C nanotubes) are prepared through facile molten-salt-assisted pyrolysis of B/N/Co precursors following chemical etching. The Co single atom is demonstrated to form a Co-N-4 planar configuration by XAFS analysis. The developed B, N, Co/C nanotubes exhibit excellent oxygen reduction reaction (ORR) performance in alkaline medium. They not only display a positive half-wave potential (E-1/2, 0.87 V), surpassing that of commercial Pt/C (0.84 V), but also show an outstanding stability (only 1 mV degrade can be observed after 10,000 cycles) and a high fuel selectivity. These excellent ORR performances derive from the efficient synergy of atomically dispersed Co active sites, unique 3D tubelike assembly structure, large specific surface area, and high graphitization degree. Moreover, the B, N, Co/C nanotubes assisted by RuO2 as an air cathode can enable rechargeable Zn-air batteries with larger power density (125.0 mW cm(-2)), higher specific capacity (746.8 mA h g(Zn)(-1)), and better cycling stability than those of conventional Pt/C + RuO2-based Zn-air batteries.

Keywordb, N-doped Carbon Nanotubes Atomically Dispersed Co Sites Molten Salt Oxygen Reduction Reaction Rechargeable Zn-air Batteries
DOI10.1021/acsaem.0c00215
Language英语
WOS KeywordMetal-free Electrocatalysts ; Single-atom Catalysis ; Doped Porous Carbon ; Efficient ; Sites ; Robust ; Hybrid ; Boron ; Nanoparticles ; Nanosheets
Funding ProjectNational Natural Science Foundation of China[51672193] ; National Natural Science Foundation of China[21875112] ; National Natural Science Foundation of China[51920105004] ; Natural Science Foundation of Zhejiang Province[LQ18B030001] ; China Scholarship Council[201908440514]
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China ; Natural Science Foundation of Zhejiang Province ; China Scholarship Council
WOS IDWOS:000537656400055
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/40917
Collection中国科学院过程工程研究所
Corresponding AuthorFu, Gengtao; Lee, Jong-Min; Huang, Shaoming
Affiliation1.Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 637459, Singapore
2.Guangdong Univ Technol, Guangzhou Key Lab Low Dimens Mat & Energy Storage, Sch Mat & Energy, Guangzhou 510006, Peoples R China
3.Nanjing Normal Univ, Jiangsu Key Lab New Power Batteries, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Sch Chem & Mat Sci, Nanjing 210023, Peoples R China
4.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Ruopeng,Chen, Jiangyue,Chen, Zhijing,et al. Atomically Dispersed CoN4/B, N-C Nanotubes Boost Oxygen Reduction in Rechargeable Zn-Air Batteries[J]. ACS APPLIED ENERGY MATERIALS,2020,3(5):4539-4548.
APA Zhao, Ruopeng.,Chen, Jiangyue.,Chen, Zhijing.,Jiang, Xian.,Fu, Gengtao.,...&Huang, Shaoming.(2020).Atomically Dispersed CoN4/B, N-C Nanotubes Boost Oxygen Reduction in Rechargeable Zn-Air Batteries.ACS APPLIED ENERGY MATERIALS,3(5),4539-4548.
MLA Zhao, Ruopeng,et al."Atomically Dispersed CoN4/B, N-C Nanotubes Boost Oxygen Reduction in Rechargeable Zn-Air Batteries".ACS APPLIED ENERGY MATERIALS 3.5(2020):4539-4548.
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