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Updated: May 23, 2025

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells

Published on: February 1, 2016

金属阳极的相间设计

Qidi Wang¹, Chenglong Zhao¹, Shuwei Wang²

¹Department of Radiation Science and Technology, Delft University of Technology, Delft 2629JB, The Netherlands.

Journal of the American Chemical Society

|March 7, 2025

概括

设计稳定的电极-电解质介面是长寿命 () 金属电池 (LMB) 的关键. 新的见解表明避免反应,而不仅仅是密集的沉积,对于持久的LMB来说至关重要,即使是常见的电解质.

科学领域:

材料科学
电化学
电池技术

背景情况:

电极-电解质介面极大地影响 () 金属电池 (LMB) 的性能和寿命.
这些介面因循环而降解导致容量损失和电池寿命缩短.

研究的目的:

综合分析金属阳极间相的热力学和运动性质之间的相互作用.
为设计强大的接口提供见解,以提高LMB的耐用性.

主要方法:

通过各种电解质化学物质直接测量离子运输动力学.
在循环过程中分析沉积的形态和行为.

主要成果:

高离子流动性促进密集的沉积物;缓慢的运输导致高表面积沉积物和剥离.
持久的间相优先考虑避免电解质反应而不是仅仅实现密集的沉积物.
孤立的沉积物可以在特定的电解质系统中重组并重新加入阳极质量,挑战传统观点.

结论:

重新定义耐用LMB的相间设计原则,强调避免反应.
通过优化相间特性,可以通过商业碳酸电解质实现 LiNi$_{0.8}$Co$_{0.1}$Mn$_{0.1}$O$_{2}$的高可逆性.

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