Live Scanning Electron Microscope Observations of Dendritic Growth in Lithium/Polymer Cells

作者：Mickaël Dollé, Lucas Sannier, Bernard Beaudoin, Michel Trentin, Jean‐Marie Tarascon · 发表于：Electrochemical and Solid-State Letters · 年份：2002 · DOI：10.1149/1.1519970 · 被引用次数：276 · 研究领域：Advanced Battery Materials and Technologies、Material Dynamics and Properties、Advancements in Battery Materials

We report live observations of lithium polymer batteries upon cycling within the microscope antechamber by means of a scanning electron microscope, equipped with a transfer system that avoids sample air exposure. The well-established direct correlation between current density and dendrite formation is confirmed, and the formation of a mossy or dendritic interface was evidenced to be at the origin of the delaminating between the substrate, where the lithium is plated, and the polymer. These experiments enable a better understanding of the dendrite formation mechanism, like the important finding that they grow tipwise as well as sidewise. © 2002 The Electrochemical Society. All rights reserved.