Scholarlink

Abstract <p>Electroplating underpins technologies from batteries to electrocatalysis, yet the nanoscale mechanisms that govern how metals nucleate and grow remain difficult to resolve, particularly under varying temperatures. Temperature is known to critically influence this balance, but direct experimental evidence of the resulting mechanistic transitions has been lacking. Here we use the lead–acid battery as a model system to visualize electroplating pathways across a wide thermal range. By combining in situ liquid phase transmission electron microscopy with a MEMS-based platform for simultaneous electrochemical control and heating, we directly image lead plating and stripping at room temperature and 60&#xa0;°C. We uncover a temperature-driven transition from nucleation-dominated plating, yielding fine dendritic networks, to growth-dominated crystallization, producing large faceted particles. Despite similar charge transfer, the resulting morphologies diverge fundamentally. These observations establish a general framework for understanding temperature-controlled electroplating and provide mechanistic insights relevant to the suppression of dendritic growth in advanced metal-anode batteries.</p> Graphical abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Direct visualization of a temperature-induced shift in electroplating mechanism via in situ liquid phase TEM

  • 期刊论文

  • 发表日期：

    2025年12月2日

查看全文
  • Hongkui Zheng,
  • Hongyu Sun,
  • Shibabrata Basak,
  • Rüdiger-A. Eichel,
  • H. Hugo Pérez Garza

摘要

Abstract

Electroplating underpins technologies from batteries to electrocatalysis, yet the nanoscale mechanisms that govern how metals nucleate and grow remain difficult to resolve, particularly under varying temperatures. Temperature is known to critically influence this balance, but direct experimental evidence of the resulting mechanistic transitions has been lacking. Here we use the lead–acid battery as a model system to visualize electroplating pathways across a wide thermal range. By combining in situ liquid phase transmission electron microscopy with a MEMS-based platform for simultaneous electrochemical control and heating, we directly image lead plating and stripping at room temperature and 60 °C. We uncover a temperature-driven transition from nucleation-dominated plating, yielding fine dendritic networks, to growth-dominated crystallization, producing large faceted particles. Despite similar charge transfer, the resulting morphologies diverge fundamentally. These observations establish a general framework for understanding temperature-controlled electroplating and provide mechanistic insights relevant to the suppression of dendritic growth in advanced metal-anode batteries.

Graphical abstract