Fabrication pressures and stack pressures in solid-state battery
Zhijun Wu,
Shengnan He,
Chao Zheng,
Jiantuo Gan,
Liaona She,
Mingchang Zhang,
Yong Gao,
Yaxiong Yang,
Hongge Pan
Affiliations
Zhijun Wu
Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an 710021, China
Shengnan He
Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an 710021, China
Chao Zheng
Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an 710021, China
Jiantuo Gan
Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an 710021, China
Liaona She
Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an 710021, China
Mingchang Zhang
Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an 710021, China
Yong Gao
Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an 710021, China
Yaxiong Yang
Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an 710021, China; Corresponding authors.
Hongge Pan
Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an 710021, China; State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China; Corresponding authors.
Solid-state batteries (SSBs) have received widespread attention with their high safety and high energy density characteristics. However, solid-solid contacts in the internal electrode material and the electrode material/solid electrolyte (SE) interfaces, as well as the severe electrochemo-mechanical effects caused by the internal stress due to the volume change of the active material, these problems hinder ion/electron transport within the SSBs, which significantly deteriorates the electrochemical performance. Applying fabrication pressures and stack pressures are effective measures to improve solid-solid contact and solve electrochemo-mechanical problems. Herein, the influences of different pressures on cathode material, anode material, SEs, and electrode/SEs interface are briefly summarized from the perspective of interface ion diffusion, transmission of electrons and ions in internal particles, current density and ion diffusion kinetics, and the volume changes of Li+ stripping/plating based on two physical contact models, and point out the direction for the future research direction of SSBs and advancing industrialization by building the relationship between pressures and SSBs electrochemistry.
