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

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

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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 elec-trochemical polymerization.The PDS-Li acts as an addi-tional 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 Lij.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.

Anode-freeArtificial solid electrolyte interphase(SEI)Lithium metal batteriesLithium-rich cathodeFinite element simulation

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

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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

Light Industry Institute of Electrochemical Power Sources,Suzhou 215006,China

School of Chemistry and Chemical Engineering,Nantong University,Nantong 226019,China

State Key Laboratory of Space Power-Sources Technology,Shanghai Institute of Space Power-Sources,Shanghai 200245,China

Centre Énergie,Matériaux et Télécommunications,Institut National de la Recherche Scientifique,Varennes,QC J3X 1S2,Canada

Zhangjiagang Industrial Technologies,Soochow University,Suzhou 215006,China

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国家自然科学基金国家自然科学基金国家自然科学基金江苏省自然科学基金江苏省自然科学基金江苏省自然科学基金Key Research and Development Project funded by Department of Science and Technology of Jiangsu ProvinceNatural Science Foundation of Jiangsu Higher Education Institutions of ChinaPriority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)

5207122651872193U21A20332BK20181168BK20201171BK20220061BE2020003-319KJA210004

2024

10.1007/s12598-023-02609-1

稀有金属(英文版)
中国有色金属学会

稀有金属(英文版)

CSTPCDEI
影响因子：0.801
ISSN：1001-0521
年,卷(期)：2024.43(6)
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