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A Nondeposition Solid-Solution Li Alloy Anode for Solid-State Batteries

delete2025-11-01
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PRE
AI
Z
Zhaoming Tong
S
Shuhao Wang
X
Xinqi Wei
Y
Yanpeng Guo
H
Haoyue Liang
X
Xingguo Zhong
X
Xizheng Liu
T
Tianyou Zhai
H
Huiqiao Li *
DOI:10.1021/acsenergylett.5c02665delete
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摘要

摘要

En 中文
锂基金属一直被认为是高能量全固态锂金属电池(ASLMBs)中最有前景的负极材料。然而,其不可控的沉积/溶解机制导致电池因严重的枝晶生长、界面稳定性差和快速机械降解而迅速失效。在此,通过热-机械耦合合成方法开发了一种非沉积锂合金,具有柔性可加工性和容量可定制性。获得了一种具有双电子/离子导电性和低工作电位(0.2 V)的单相LiGa合金,其表现出可逆的固溶体合金/脱合金机制,从而从根本上避免了在电解质/负极界面处沉积高活性金属锂。凭借非沉积机制和电子/离子导电性的显著优势,LiGa基对称电池与Li6PS5Cl结合使用,将寿命从450 h大幅延长至6000 h,并实现了超过7.1 mAcm⁻²的超高电流密度。此外,这种非沉积型Li合金对多种固态电解质表现出高稳定性,包括聚乙二醇(poly(ethylene oxide))、Li₃InCl₆和Li₁.₅Al₀.₅Ge₁.₅(PO₄)₃,为高能量ASLMBs提供了新的选择。
Keyword:
LITHIUM

期刊

ACS Energy Letters 封面图
ACS Energy Letters
IF:
18.2
论文数:
5.2K
被引数:
6.6W

机构

J
Jianghan University
学者数:
1.2K
论文数: 452
被引数: 4.4K
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