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在固态电池的金属-石榴石接口的现场中子深度分析

Chengwei Wang^1,2, Yunhui Gong^1,2, Jiaqi Dai¹

¹Department of Materials Science and Engineering, University of Maryland , College Park, Maryland 20742, United States.

Journal of the American Chemical Society

|September 19, 2017

概括

中子深度分析揭示了石榴石金属电池固态电解质的界面挑战. 这种技术有助于诊断短路并改善实际应用的接口稳定性.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
固态物理固态物理

背景情况:

基于石榴石的固态电解质 (SSEs) 对于开发全固态金属电池至关重要.
高界面阻抗和差界面稳定性阻碍了这些电池的实际应用.

研究的目的:

通过使用中子深度分析 (NDP) 来研究石榴石SSE与金属接触的界面行为.
在现场监测板剥离过程并诊断固态电池中的短路.

主要方法:

使用中子深度分析 (NDP),一种非破坏性,对敏感的技术.
制造的对称/石榴石/ (LGL) 细胞和不对称/石榴石/碳纳米管 (LGC) 细胞.
在现场监测涂料和剥离工艺.

主要成果:

在板剥离过程中,NDP成功地揭示了接口行为.
该技术展示了用于诊断短路的预测能力.
数据表明,与无阳极形成可靠的接口接触方面存在局限性.

结论:

界面工程和涉及过量的的策略是改善石榴石SSE性能所必需的.
需要进一步的研究,以克服实际金属电池应用的接口挑战.

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