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Solid-Gas Interphase Formation in Anode-Free Solid-State Batteries

delete2025-12-01
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PRE
AI
D
Daniel W. Liao
D
Davy Zeng
G
Govind Kumar Mishra
S
Si Young Lee
A
Aaron M. Melemed
D
Daniel Penley
R
Ryosuke Iwamura
H
Hiroki Kawakami
Y
Yûichi Aihara
K
Koichiro Aotani
N
Neil P. Dasgupta *
DOI:10.1021/jacs.5c13252delete
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摘要

摘要

En 中文
固体电解质界面(SEI)已知在电池性能中起着关键作用。然而,对于高活性组分(如锂金属负极)而言,额外的副反应也可能对界面稳定性产生影响。具体而言,对于固态电池(SSBs),存在一个独特的界面,其中暴露的锂金属表面在运行期间与周围气相分子接触,这与液态电解质系统中存在的固-液界面不同。在本工作中,我们研究了锂金属负极暴露表面在沉积、剥离和开路静止期期间固态-气态界面(SGI)层的动态形成。定制了专用环境腔室,以允许在施加堆叠压力的同时控制背景气体的组成和压力进行循环。发现SGI的形成取决于沉积的锂容量、环境气体组成和老化时间,这对库仑效率产生直接影响。为揭示在微量背景反应气体条件下SGI层的动态形成,在超高真空条件下进行了原位X射线光电子能谱(XPS)测试。固态软包电池在商业化相关的干室环境中组装,揭示了SGI形成对实际电池配置日历寿命的影响。这些发现强调了SGI形成的重要性,这与由电解质分解产生的经典SEI层不同,在固态电池的分析中具有重要意义。
Keyword:
LITHIUM METAL ANODES
ELECTROLYTE INTERPHASE
INTERFACE STABILITY
SURFACE-CHEMISTRY
LI
RESISTANCE
LAYER
LAB

期刊

Journal of the American Chemical Society 封面图
Journal of the American Chemical Society
IF:
15.6
论文数:
20.0W
被引数:
60.2W

机构

U
University of Michigan
学者数:
6.4W
论文数: 5.3W
被引数: 124
U
university of michigan system
学者数:
9.1W
论文数: 8.6W
被引数: 133
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