摘要
Owing to the unique structure,anode-free lithium metal batteries(AFLMBs)have higher energy density and lower production cost than traditional lithium metal batteries(LMBs)or lithium-ion batteries(LIBs),However,AFLMBs suffer from an inherently finite Li reservoir and exhibit poor cycle stability,low Coulombic efficiency(CE)and severe dendrite growth.In this work,polydiallyl lithium disulfide(PDS-Li)was successfully synthesized and coated on Cu current collector by electrochemical polymerization.The PDS-Li acts as an additional lithium resource to compensate for the irreversible loss of lithium during cycling.In addition,the special structure and lithiophilicity of PDS-Li contribute to lower nucleation overpotential and uniform lithium deposition.When coupled with Li-rich manganese-based(LRM)cathode of Li1.2Mn0.54Ni0.13Co0.13O2,the anode-free full cell exhibits significantly improved cycle stability over 100 cycles and capacity retention of 63.3%and 57%after 80 and 100 cycles,respectively.We believe that PDS-Li can be used to ensure stable cycling performance and high-energy-density in AFLMBs.
出处
《Rare Metals》
SCIE
EI
CAS
CSCD
2024年第6期2527-2535,共9页
稀有金属（英文版）
基金
financially supported by the National Natural Science Foundations of China(Nos.52071226,51872193 and U21A20332)
the Natural Science Foundations of Jiangsu Province(Nos.BK20181168,BK20201171 and BK20220061)
the Key R&D Project funded by Department of Science and Technology of Jiangsu Province(No.BE2020003-3)
the Natural Science Foundation of Jiangsu Higher Education Institutions of China(No.19KJA210004)
the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)。
作者简介
Ming-Ji Peng has contributed equally to this work;Jin-Qiu Zhou has contributed equally to this work;Cheng-Lin Yan,e-mail:c.yan@suda.edu.cn;Jie Liu,e-mail:jliu93@ntu.edu.cn。
