固态电池的制造压力和叠片压力

IF 42.9 Q1 ELECTROCHEMISTRY
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引用次数: 0

摘要

固态电池(SSB)以其高安全性和高能量密度的特点受到广泛关注。然而,内部电极材料和电极材料/固体电解质(SE)界面的固-固接触,以及活性材料体积变化引起的内应力所造成的严重电化学-机械效应,这些问题阻碍了固态电池内部的离子/电子传输,从而大大降低了电化学性能。施加制造压力和堆叠压力是改善固-固接触和解决电化学-机械问题的有效措施。本文基于两个物理接触模型,从界面离子扩散、内部粒子的电子和离子传输、电流密度和离子扩散动力学、Li+剥离/电镀的体积变化等角度,简要总结了不同压力对阴极材料、阳极材料、SEs、电极/SEs界面的影响,并通过构建压力与SSBs电化学之间的关系,为SSBs未来的研究方向和推进产业化指明了方向。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Fabrication pressures and stack pressures in solid-state battery

Fabrication pressures and stack pressures in solid-state battery

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.

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CiteScore
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