首页|Alkali Metal Ion Substituted Carboxymethyl Cellulose as Anode Polymeric Binders for Rapidly Chargeable Lithium-Ion Batteries

Alkali Metal Ion Substituted Carboxymethyl Cellulose as Anode Polymeric Binders for Rapidly Chargeable Lithium-Ion Batteries

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The increasing demand for short charging time on electric vehicles has motivated realization of fast chargeable lithium-ion batteries(LIBs).However,shortening the charging time of LIBs is limited by Li+intercalation process consisting of liquid-phase diffusion,de-solvation,SEI crossing,and solid-phase diffusion.Herein,we propose a new strategy to accelerate the de-solvation step through a control of interaction between polymeric binder and solvent-Li+complexes.For this purpose,three alkali metal ions(Li+,Na+,and K+)substituted carboxymethyl cellulose(Li-,Na-,and K-CMC)are prepared to examine the effects of metal ions on their performances.The lowest activation energy of de-solvation and the highest chemical diffusion coefficient were observed for Li-CMC.Specifically,Li-CMC cell with a capacity of 3 mAh cm-2 could be charged to＞95％in 10 min,while a value above＞85％was observed after 150 cycles.Thus,the presented approach holds great promise for the realization of fast charging.

de-solvationdigital twinsfast charginggraphite anodespolymeric binders

Seoungwoo Byun、Zhu Liu、Dong Ok Shin、Kyuman Kim、Jaecheol Choi、Youngjoon Roh、Dahee Jin、Seungwon Jung、Kyung-Geun Kim、Young-Gi Lee、Stefan Ringe、Yong Min Lee

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Department of Energy Science and Engineering,Daegu Gyeongbuk Institute of Science and Technology(DGIST),Daegu 42988,Korea

ZJU-Hangzhou Global Scientific and Technological Innovation Center,Zhejiang University,Hangzhou 311215,China

Intelligent Sensors Research Section,Electronics and Telecommunications Research Institute(ETRI),Daejeon 34129,Korea

Department of Advanced Device Technology,University of Science and Technology(UST),Daejeon 34113,Korea

Intelligent Polymer Research Institute and ARC Centre of Excellence for Electromaterials Science,University of Wollongong,Wollongong,NSW 2522,Australia

Energy Science and Engineering Research Center,Daegu Gyeongbuk Institute of Science and Technology(DGIST),Daegu 42988,Korea

Department of Chemistry,Korea University,Seoul 02841,Korea

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2024

10.1002/eem2.12509

能源与环境材料(英文)

能源与环境材料(英文)

ISSN：
年,卷(期)：2024.7(1)