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Self-assembled MoS_(2)/C nanoflowers with expanded interlayer spacing as a high-performance anode for sodium ion batteries

查看全文 作  者:Yuxiang [1]Luo;Pei [1]Zhang;Xunhui [1]Xiong;Haikuo [2]Fu 高影响力作者 机构地区:[1]Guangzhou Key Laboratory of Surface Chemistry of Energy Materials,New Energy Research Institute,School of Environment and Energy,South China University of Technology,Guangzhou 510006,China;[2]Qingyuan Jiazhi New Material Research Institute Co.Ltd.,Qingyuan 511500,China高影响力机构 出  处:《Chinese Journal of Chemical Engineering》索引2021年第34卷第11期,共7页高影响力期刊 基  金:National Natural Science Foundation of China(51874142);Pearl River S&T Nova Program of Guangzhou(201806010031);the Fundamental Research Funds for the Central Universities(2019JQ09);Guangdong Innovative and Entrepreneurial Research Team Program(2016ZT06N569);Tip-top Scientific and Technical Innovative Youth Talents of Guangdong Special Support Program(2019TQ05L903);Young Elite Scientists Sponsorship Program by CAST(2019QNRC001). 摘  要:Two-dimensional(2D)MoS_(2) nanomaterials have been extensively studied due to their special structure and high theoretical capacity,but it is still a huge challenge to improve its cycle stability and achieve superior fast charge and discharge performance.Herein,a facile one-step hydrothermal method is proposed to synthetize an ordered and self-assembled MoS_(2) nanoflower(MoS_(2)/C NF)with expanded interlayer spacing via embedding a carbon layer into the interlayer.The carbon layer in the MoS_(2) interlayer can speed the transfer of electrons,while the nanoflower structure promotes the ions transport and improves the structural stability during the charging/discharging process.Therefore,MoS_(2)/C NF electrode exhibits exceptional rate performance(318.2 and 302.3 mA·h·g^(-1) at 5.0 and 10.0 A·g^(-1),respectively)and extraordinary cycle durability(98.8%retention after 300 cycles at a current density of 1.0 A·g^(-1)).This work provides a simple and feasible method for constructing high-performance anode composites for sodium ion batteries with excellent cycle durability and fast charge/discharge ability. 关 键 词:Sodium ion batteries Nanoflower structure Expanded interlayer spacing MoS_(2)nanosheets
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