固态锂电池因其具有预期的高能量密度、宽工作温度范围及高安全性而备受青睐, 成为动力电源和能源存储的主要选择. 然而, 固-固界面的离子/电子迁移阻力大、稳定性不足、剥离易发生等问题严重限制了其实际应用及产业化. 为了改善固态电池性能, 深入理解离子/电子的传导机理, 不仅需要获取原始实验数据, 而且还需要利用阻抗传输线模型, 分析离子/电子的彼此影响及分离离子与电子的独立贡献. 综述了多孔电极中离子/电子传导的 7 种测试方法及其特点; 讨论了多孔电极中离子/电子传导及其 9 种传输线模型; 分析了离子/电子传导机理 研究中仍存在的尚未解决的基本问题; 给出了能改善固态电池循环稳定性的努力方向. 上述措施便于快速了解插层电极中离子/电子传导的研究现状、关键问题和发展趋势. 

Solid-state lithium batteries with expected high energy density, wide operating temperature range, and high safety will become the primary choice in the field of power supply and energy storage. However, issues like high ion/electron migration resistance, insufficient stability, and ease of peeling at the solid-solid interface considerably limit their practical applications and industrialization. A deep understanding of the ion/electron conduction mechanism is imperative for improving the performance of solid-state batteries. Regarding this, it is necessary not only to obtain original experimental data but also to analyze the mutual influence of ions/electrons and their independent contribution to the total polarization loss through transmission line models. The following aspects are discussed in this brief review: (1) the seven experimental methods for measuring ion/electron conductions in porous electrodes and their characteristics are reviewed; (2) ion/electron conductions in porous electrodes and their nine transport line models are discussed; (3) the unsolved problems in the study of ion/electron conduction mechanism are analyzed; (4) the possible directions of efforts to improve the cycle stability of solid-state batteries are proposed. This review benefits readers by quickly elucidating the research status, key issues, and development trends of ion/electron conduction in intercalation electrodes.