Digital‐Twin‐Assisted Insights Into Irreversible Capacity and Activation Strategy Power High‐Loading Solid‐State Batteries
Abstract
Abstract In solid‐state lithium‐ion batteries, the fraction of active materials involved in electrode electrochemistry reduces with the increase of electrode thickness. Conventional wisdom suggests that the degree of reaction linearly decreases toward the current collector as in lithium‐ion batteries, which is, however, limited by the high difficulty of experimental capture of operando charge and mass transport. Electrode dynamics simulations can provide space visualization but are usually based on simplified models. Herein, we build digital‐twin electrodes with digital‐space voxel microstructure based on synchrotron tomography, which transforms the electrode architecture from real space to digital space for the construction of precision models. From the digital model‐driven simulation, we find an “lithium trapping” effect, stemming from susceptible lithium stuck in the solid electrolyte, triggers an inadequate reaction of the intermediate region of electrodes. Then, we construct locally accelerated ion paths activating the lithium trapping, indicating that this strategy can significantly guide the sustainable battery design for next‐generation energy storage.
Article Details
Authors (13)
Yecai Sun
State Key Laboratory of Space Power‐Sources School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China
Yanbin Ning
State Key Laboratory of Space Power‐Sources, School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin China
Zhuomin Qiang
State Key Laboratory of Space Power‐Sources School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China
Lizhi Xiang
Qingsong Liu
MOE Engineering Research Center for Electrochemical Energy Storage and Carbon Neutrality in Cold Regions
Chaoqun Zhang
Department of Chemistry, Johns Hopkins University, Baltimore, MD, USA.
Guoce Quan
State Key Laboratory of Space Power‐Sources School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 China
Yan Zhang
Biao Deng
Shanghai Institute of Applied Physics, Chinese Academy of Sciences, 239 Zhangheng Road, Shanghai 201204, China
Geping Yin
School of Chemistry and Chemical Engineering
Tiefeng Liu
College of Chemical and Biological Engineering
Jiajun Wang
Institute of Molecular Plus, Department of Chemistry, School of Science
Shuaifeng Lou
MOE Engineering Research Center for Electrochemical Energy Storage and Carbon Neutrality in Cold Regions