阴离子亚晶格设计使氧化卤化物晶体具有超离子导电性

IF 45.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2025-10-09 DOI:10.1126/science.adt9678

Feipeng Zhao, Shumin Zhang, Shuo Wang, Joel W. Reid, Wei Xia, Jue Liu, Graham King, James A. Kaduk, Jianwen Liang, Jing Luo, Yingjie Gao, Feipeng Yang, Yang Zhao, Weihan Li, Sandamini H. Alahakoon, Jinghua Guo, Yining Huang, Tsun-Kong Sham, Yifei Mo, Xueliang Sun

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引用次数: 0

摘要

固态电池由于其固有的安全性而成为有吸引力的储能系统，但其发展取决于先进的固态电解质（ses）。大多数有机硅仍然主要局限于单阴离子体系（例如，硫化物、氧化物、卤化物和聚合物）。通过混合阴离子设计策略，我们开发了晶体Li3Ta3O4Cl10 （LTOC）及其衍生物，具有优异的离子电导率（在25°C时高达13.7毫微秒/厘米）和电化学稳定性。LTOC结构具有由氧原子和末端氯原子组成的混合阴离子螺旋链，可诱导具有低能垒的连续“四面体-四面体”锂离子迁移路径。此外，LTOC具有全面的阴极兼容性，使固态电池能够在4.9伏特的锂/锂+和低至- 50°C的低温下工作。这些发现描述了一类有前途的用于高性能固态电池的超离子导体。

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Anion sublattice design enables superionic conductivity in crystalline oxyhalides

Solid-state batteries are attractive energy storage systems as a result of their inherent safety, but their development hinges on advanced solid-state electrolytes (SSEs). Most SSEs remain largely confined to single-anion systems (e.g., sulfides, oxides, halides, and polymers). Through mixed-anion design strategy, we develop crystalline Li₃Ta₃O₄Cl₁₀ (LTOC) and its derivatives with excellent ionic conductivities (up to 13.7 millisiemens per centimeter at 25°C) and electrochemical stability. The LTOC structure features mixed-anion spiral chains, consisting of corner-shared oxygen and terminal chlorine atoms, which induces continuous “tetrahedron-tetrahedron” Li-ion migration pathways with low energy barriers. Additionally, LTOC demonstrates holistic cathode compatibility, enabling solid-state batteries operation at 4.9 volts versus Li/Li⁺ and low temperature, down to −50°C. These findings describe a promising class of superionic conductors for high-performance solid-state batteries.

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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