材料科学
阳极
锂(药物)
快离子导体
金属锂
电解质
磷酸钒锂电池
阴极
纳米技术
化学工程
电极
化学
医学
工程类
物理化学
内分泌学
作者
Weihan Li,James A. Quirk,Minsi Li,Weiya Xia,Lucy M. Morgan,Wen Yin,Matthew Zheng,Leighanne C. Gallington,Yang Ren,Ning Zhu,Graham King,Renfei Feng,Ruying Li,James A. Dawson,Tsun‐Kong Sham,Xueliang Sun
标识
DOI:10.1002/adma.202302647
摘要
All-solid-state lithium metal batteries can address crucial challenges regarding insufficient battery cycling life and energy density. The demonstration of long-cycling dendrite-free all-solid-state lithium metal batteries requires precise tailoring of lithium-ion transport of solid-state electrolytes (SSEs). In this work, a proof of concept is reported for precise tailoring of lithium-ion transport of a halide SSE, Li3 InCl6 , including intragranular (within grains) but also intergranular (between grains) lithium-ion transport. Lithium-ion migration tailoring mechanism in crystals is developed by unexpected enhanced Li, In, and Cl vacancy populations and lower energy barrier for hopping. The lithium-ion transport tailoring mechanism between the grains is determined by the elimination of voids between grains and the formation of unexpected supersonic conducting grain boundaries, boosting the lithium dendrite suppression ability of SSE. Due to boosted lithium-ion conduction and dendrite-suppression ability, the all-solid-state lithium metal batteries coupled with Ni-rich LiNi0.83 Co0.12 Mn0.05 O2 cathodes and lithium metal anodes demonstrate breakthroughs in electrochemical performance by achieving extremely long cycling life at a high current density of 0.5 C (2000 cycles, 93.7% capacity retention). This concept of precise tailoring of lithium-ion transport provides a cost, time, and energy efficient solution to conquer the remaining challenges in all-solid-state lithium-metal batteries for fast developing electric vehicle markets.
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