Stable Lithium-Carbon Composite Enabled by Dual-Salt Additives

Nano-Micro Letters

Feng Guo¹  Lei Zheng¹  Rong Huang²  Zhiyun Li²  Tuo Kang³  Yingzhu Fan³  Wei Lu³  Wei Gu³  Yayun Mao³  Ya Liu³  Yanbin Shen³  Liwei Chen⁴ 

[1] School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, 230026, Hefei, People’s Republic of China;i-Lab, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Science, 215123, Suzhou, People’s Republic of China;Vacuum Interconnected Nanotech Workstation (Nano-X), Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Science (CAS), 215123, Suzhou, People’s Republic of China;i-Lab, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Science, 215123, Suzhou, People’s Republic of China;i-Lab, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Science, 215123, Suzhou, People’s Republic of China;in-Situ Center for Physical Science, School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, 200240, Shanghai, People’s Republic of China;

关键词: Lithium metal battery;    Coulombic efficiency;    Dual-salt additives;    Li-CNT;    Solid electrolyte interphase;   

DOI  :  10.1007/s40820-021-00633-3

来源: Springer

【 摘 要 】

tsIt is the first report that using dual-salt additives of LiPF6 and LiNO3 to significantly improve the cycling performance of the Li-CNT negative electrode.The mechanism why the combined use of LiPF6 and LiNO3 additive can improve the cycling performance and rate capability of the Li-CNT negative electrode was investigated.An average cycling Coulombic efficiency as high as 99.30% was obtained for the Li-CNT negative electrode at a current density of 2.5 mA cm−2 and an negative electrode to positive electrode capacity (N/P) ratio of 2.

【 授权许可】

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