Battery Brew 50|水系锌电池（AZBs）中重力驱动的3D化学分层与活性物质病态重分布

播客概述：欢迎收听本期节目！关键内容提要：核心问题：AZBs安全、低成本、高容量（锌820 mAh/g），但锌负极枝晶、析氢腐蚀、pH波动导致失效。传统研究视界面pH为二维均匀分布，忽略实用电池（具有高度）中重力作用下的垂直化学梯度。关键技术：自主研发原位3D荧光pH可视化平台激光扫描共聚焦显微镜（LSCM）+ pH敏感荧光探针（HPTS） Z轴光学切片重建3D pH场，实现“上帝视角”实时监测。主要发现：重力驱动化学分层（Chemical Stratification）：静置/腐蚀：OH⁻产生，下部pH高于上部（ΔpH ~0.3）。通电剥离锌：锌离子溶出 → 局部高浓度/高密度电解液重力沉降 → 自然对流裹挟OH⁻向下堆积 → “下高、上低”pH梯度（ΔpH ~0.6，不可逆）。 Peclet数Pe ~10⁴，证明对流主导扩散。 Reference: Three-Dimensional Visualization of Chemical Stratification and Pathological Redistribution in Aqueous Zinc Batteries 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 50|水系锌电池（AZBs）中重力驱动的3D化学分层与活性物质病态重分布

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