Dynamically lithium-compensated polymer artificial SEI to assist highly stable lithium-rich manganese-based anode-free lithium metal batteries  

作　　者：Ming-Ji Peng Jin-Qiu Zhou Ting-Ting Han Yang Zhou Jie Liu Na Xu Zhen-Kang Wang Wen-Bin Lin Cheng-Lin Yan 

机构地区：[1]Key Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical Industry,College of Energy,Soochow University,Suzhou 215006,China [2]Light Industry Instituteof Electrochemical Power Sources,Suzhou 215006,China [3]School of Chemistry and Chemical Engineering,Nantong University,Nantong 226019,China e-mail:[e-mail] [4]State Key Laboratory of Space Power-Sources Technology,Shanghai Institute of Space Power-Sources,Shanghai 200245,China [5]Centre Energie,Materiaux et Télécommunications,Institut National de la Recherche Scientifique,Varennes,QC J3X 1S2,Canada [6]Zhangjiagang Industrial Technologies,Soochow University,Suzhou 215006,China

出　　处：《Rare Metals》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)。

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.

关 键 词：Anode-free Artificial solid electrolyte interphase(SEI) Lithium metal batteries Lithium-rich cathode Finite element simulation 

分 类 号：O646[理学—物理化学] TM912[理学—化学]