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DOI	10.1039/c8ee01472h
	Synthesis of porous and metallic CoB nanosheets towards a highly efficient electrocatalyst for rechargeable Na-O2 batteries
	Ma J.-L.; Li N.; Zhang Q.; Zhang X.-B.; Wang J.; Li K.; Hao X.-F.; Yan J.-M.
发表日期	2018
ISSN	17545692
起始页码	2833
结束页码	2838
卷号	11 期号:10
英文摘要	The sodium-oxygen (Na-O2) battery is proposed as one of the most promising energy storage technologies due to its high energy density and the abundance of sodium resources; however, its applications still suffer from low energy efficiency and poor cycle stability and rate performance due to the absence of highly efficient electrocatalysts. Herein, as a proof-of-concept experiment, we, for the first time, develop a facile and solid-state reaction strategy for controllable synthesis of porous cobalt boride (CoB) nanosheets with the help of inorganic molten salts. Surprisingly, when CoB nanosheets are employed as cathode catalysts for Na-O2 batteries for the first time, significantly improved electrochemical performances are obtained, such as a low charge overpotential, good rate capability, and a high specific capacity (11482 mA h g-1) and cycle life (74 cycles), which, in combination with density functional theory, could be attributed to the synergy of high catalytic activity and electronic conductivity and the porous sheet structure of CoB. This experimentally and theoretically established metallic transition metal borides as intriguing electrocatalysts could trigger more studies on other energy storage and conversion systems. © 2018 The Royal Society of Chemistry.
英文关键词	Borides; Catalyst activity; Density functional theory; Electrocatalysts; Energy efficiency; Energy storage; Nanocatalysts; Nanosheets; Secondary batteries; Sodium; Solid state reactions; Transition metals; Controllable synthesis; Electrochemical performance; Electronic conductivity; Energy storage and conversions; Energy storage technologies; High energy densities; High specific capacity; Metallic transition; Sodium compounds; catalysis; catalyst; chemical reaction; energy efficiency; energy storage; fuel cell; nanoparticle; porous medium
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190105
作者单位	Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, Department of Materials Science and Engineering, Jilin University, Changchun, 130022, China; State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Hunan Key Laboratory for Micro-Nano Energy Materials and Device, Xiangtan University, Hunan, 411105, China; College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, 066004, China
推荐引用方式 GB/T 7714	Ma J.-L.,Li N.,Zhang Q.,et al. Synthesis of porous and metallic CoB nanosheets towards a highly efficient electrocatalyst for rechargeable Na-O2 batteries[J],2018,11(10).
APA	Ma J.-L..,Li N..,Zhang Q..,Zhang X.-B..,Wang J..,...&Yan J.-M..(2018).Synthesis of porous and metallic CoB nanosheets towards a highly efficient electrocatalyst for rechargeable Na-O2 batteries.Energy & Environmental Science,11(10).
MLA	Ma J.-L.,et al."Synthesis of porous and metallic CoB nanosheets towards a highly efficient electrocatalyst for rechargeable Na-O2 batteries".Energy & Environmental Science 11.10(2018).