具有高树脂抑制能力的潜在驱动选择性纳米金属沉积启用介面
Hongli Wan1,2, Chi Chen3, Ni Zhang1,2
1Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, 315201 Ningbo, China.
Journal of the American Chemical Society
|November 21, 2025
概括
这项研究引入了一种全固态金属电池 (ASSLB) 的新型介层和阳极策略. 这种方法同时解决空隙形成和树生长问题,提高了低压下电池的稳定性.
科学领域:
- 材料科学
- 电化学
- 能量储存
背景情况:
- 全固态金属电池 (ASSLB) 面临的挑战是剥离过程中的空隙形成以及涂层过程中的树生长.
- 这些问题限制了ASSLB的稳定性,特别是在低堆压下,阻碍了实际应用.
研究的目的:
- 在ASSLB中同时解决空洞形成和树突生长问题.
- 在低堆压下开发ASSLB的稳定循环性能.
主要方法:
- 使用硬碳-Sn (HC-Sn) 介层和LiNa作为阳极.
- 研究了现场结构转化为Li6PS5Cl/[HC-LixSn]Na/Na/LiNa.
- 评估了对称细胞性能和完整细胞循环稳定性.
主要成果:
- 通过HC-Sn中间层和LiNa阳极实现均的沉积和抑制空隙形成.
- 在低堆压 (2.0 MPa) 下在对称单元中经过1184小时的稳定化/剥离.
- 一个完整的细胞在1000个循环后表现出90. 0%的容量保留和高可逆容量.
结论:
- HC-Sn介层和LiNa阳极策略有效地抑制了Li树突和空隙形成.
- 这种方法使ASSLB在低堆压下保持稳定的循环性能,为实际应用铺平了道路.
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