Worldwide trends in mobile electrification will skyrocket demands for lithium-based battery production,driven by the popularity of electric vehicles.However,both lithium metal batteries and lithium ion bat-teries face severe safety issues due to dendrite nucleation and growth process.Li deposition is signifi-cantly influenced by interfacial factors and charging conditions.In this paper,an electrochemical model considering the internal and external factors is proposed based on Monte Carlo method.The influ-ence of internal solid electrolyte interphase(SEI)porosity,thickness and the external conditions on den-drite growth process is systematically described.The simulation results support that the three factors investigated in this model could synergistically regulate the dendrite growth process.Three competition mechanisms are proposed to tailor lithium deposition for Li-based batteries and numerical solutions for variation pattern of dendrite growth with time are fitted.A three-step process describing kinetic process of lithium deposition is proposed.To achieve dendrite-free charging process,charging strategies and emerging materials design should be considered,including physicochemical materials engineering,arti-ficial SEI,and design for dynamic safety boundary.This work could contribute to the foundation for insights of Li deposition mechanism,which is promising to provide guidelines for next-generation high-energy-density and safe batteries in CHAIN framework.

Lisheng Zhang;Siyan Chen;Wentao Wang;Hanqing Yu;Haicheng Xie;Huizhi Wang;Shichun Yang;Cheng Zhang;Xinhua Liu

School of Transportation Science and Engineering,Beihang University,Beijing 102206,China;College of Automotive Engineering,Jilin University,Changchun 130022,Jilin,China;Department of Mechanical Engineering,Imperial College London,London SW7 2BX,UK;Institute for Clean Growth and Future Mobility,Coventry University,Coventry,CV1 5FB,UK

能源化学

[1]Lisheng Zhang;Siyan Chen;Wentao Wang;Hanqing Yu;Haicheng Xie;Huizhi Wang;Shichun Yang;Cheng Zhang;Xinhua Liu-.Enabling dendrite-free charging for lithium batteries based on transport-reaction competition mechanism in CHAIN framework)[J].能源化学,2022(12):408-421

CHAIN,skyrocket

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