堆叠压力和温度如何调节固态金属电池中的涂层和脱落
Xinyi Qu1, Jundi Huang1, Xiang Chen1
1School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan, Hubei 430074, China.
ACS applied materials & interfaces
|October 13, 2025
概括
控制固态金属电池 (SSLMB) 中的涂层和树增长是安全的关键. 这项研究模拟了压力和温度如何影响沉积,降低风险并改善电池寿命.
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
- 电池技术 电池技术
背景情况:
- 固态电解质 (SSE) 与金属阳极的稳定集成对于高能量密度固态金属电池 (SSLMB) 至关重要.
- 不受控制的丝生长和死积累阻碍了SSLMB的实际应用.
- 堆叠压力和温度在调节沉积/剥离动态中的作用尚不清楚.
研究的目的:
- 开发一种合模型,描述SSLMB中的涂层和剥离.
- 研究堆叠压力和操作温度对形态和死形成的影响.
- 澄清对内部短路风险和不可逆转的容量损失的影响.
主要方法:
- 开发了一种电化学,机械和相场合模型.
- 在不同压力和温度下分析了丝的形态演变.
- 构建相位图,将压力,温度,导线高度和容量损失率相关联起来.
主要成果:
- 揭示了压力和温度对丝形态和死分布的堆叠机制.
- 量化了这些参数对内部短路风险和不可逆转的容量损失的影响.
- 展示了沉积形态和死形成之间的强烈依赖,影响了自行车性能.
结论:
- 堆叠压力和温度显著调节SSLMB的内部短路风险和周期性容量损失.
- 有利的沉积形态对于增强循环稳定性至关重要.
- 为优化外部物理场调节策略以实现更安全,更稳定的SSLMB提供理论指导.
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