Battery Brew 51|脉冲过电位实现锂离子电池负极空间退化的快速无损诊断 episode artwork

EPISODE · Mar 21, 2026 · 23 MIN

Battery Brew 51|脉冲过电位实现锂离子电池负极空间退化的快速无损诊断

from EKL Battery Brew

播客概述:欢迎收听本期节目!关键内容提要:诊断核心技术 — 脉冲诱导过电位(Δηp)操作:在50–70% SOC(石墨2阶相区间)施加短时强放电脉冲(例:2C × 10s),观察后续电压松弛波形。商用圆柱电池内部负极退化分布看不见、摸不着,像“黑匣子”。本研究实现:不拆电池 → 快速诊断负极空间退化模式 → 高精度预测剩余寿命关键发现 — 负极空间退化模式(ASDD)两种极端分布:TW(Thin and Wide):副产物薄而广、均匀散布 → 危害更大,易引发加速衰减TN(Thick and Narrow):副产物厚而集中、局部堆积 → 整体危害相对较小量化指标:表面退化熵(SDE)基于香农熵熵高 = TW(混乱、均匀退化)熵低 = TN(集中退化)Reference: Rapid and non-destructive diagnosis of lithium-ion batteries via quantification of anode spatial degradation感谢收听!继续充电,也继续酿造好生活!#EKLBatteryBrew更多电池前沿论文&解读,探索X账号:@[EKL_Batteries](x.com)前往小宇宙评论区与主播互动

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Battery Brew 51|脉冲过电位实现锂离子电池负极空间退化的快速无损诊断

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