Promoting high-voltage stability through local lattice distortion of halide solid electrolytes.

Autor: Song Z; Institute of New Energy for Vehicles, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China., Wang T; Institute of New Energy for Vehicles, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China., Yang H; Spallation Neutron Source Science Center, Dongguan, Guangdong, 523803, China.; Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China., Kan WH; Spallation Neutron Source Science Center, Dongguan, Guangdong, 523803, China. jianhx@ihep.ac.cn.; Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China. jianhx@ihep.ac.cn., Chen Y; Institute of New Energy for Vehicles, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China., Yu Q; Institute of New Energy for Vehicles, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China., Wang L; Institute of New Energy for Vehicles, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China., Zhang Y; Institute of New Energy for Vehicles, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China., Dai Y; Institute of New Energy for Vehicles, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China., Chen H; Spallation Neutron Source Science Center, Dongguan, Guangdong, 523803, China.; Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China., Yin W; Spallation Neutron Source Science Center, Dongguan, Guangdong, 523803, China.; Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China., Honda T; Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki, 305-0801, Japan.; J-PARC Center, High Energy Accelerator Research Organization (KEK), Tokai, Ibaraki, 319-1106, Japan., Avdeev M; Australian Nuclear Science and Technology Organisation (ANSTO), Lucas Heights, NSW, 2234, Australia.; School of Chemistry, University of Sydney, Sydney, NSW, 2006, Australia., Xu H; State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China., Ma J; Institute of New Energy for Vehicles, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China., Huang Y; State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China. huangyh@hust.edu.cn., Luo W; Institute of New Energy for Vehicles, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China. weiluo@tongji.edu.cn.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2024 Feb 17; Vol. 15 (1), pp. 1481. Date of Electronic Publication: 2024 Feb 17.
DOI: 10.1038/s41467-024-45864-1
Abstrakt: Stable solid electrolytes are essential to high-safety and high-energy-density lithium batteries, especially for applications with high-voltage cathodes. In such conditions, solid electrolytes may experience severe oxidation, decomposition, and deactivation during charging at high voltages, leading to inadequate cycling performance and even cell failure. Here, we address the high-voltage limitation of halide solid electrolytes by introducing local lattice distortion to confine the distribution of Cl - , which effectively curbs kinetics of their oxidation. The confinement is realized by substituting In with multiple elements in Li 3 InCl 6 to give a high-entropy Li 2.75 Y 0.16 Er 0.16 Yb 0.16 In 0.25 Zr 0.25 Cl 6 . Meanwhile, the lattice distortion promotes longer Li-Cl bonds, facilitating favorable activation of Li + . Our results show that this high-entropy halide electrolyte boosts the cycle stability of all-solid-state battery by 250% improvement over 500 cycles. In particular, the cell provides a higher discharge capacity of 185 mAh g -1 by increasing the charge cut-off voltage to 4.6 V at a small current rate of 0.2 C, which is more challenging to electrolytes|cathode stability. These findings deepen our understanding of high-entropy materials, advancing their use in energy-related applications.
(© 2024. The Author(s).)
Databáze: MEDLINE
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