Authors
Jiamin Fu, Changhong Wang, Shuo Wang, Joel W Reid, Jianwen Liang, Jing Luo, Jung Tae Kim, Yang Zhao, Xiaofei Yang, Feipeng Zhao, Weihan Li, Bolin Fu, Xiaoting Lin, Yang Hu, Han Su, Xiaoge Hao, Yingjie Gao, Shutao Zhang, Ziqing Wang, Jue Liu, Hamid Abdolvand, Tsun-Kong Sham, Yifei Mo, Xueliang Sun
Published in
Nature. Jun 25, 2025. Epub Jun 25, 2025.
Abstract
All-solid-state batteries require advanced cathode designs to realize their potential for high energy density and economic viability1-3. Integrated all-in-one cathodes, which eliminate inactive conductive additives and heterogeneous interfaces, hold promise for substantial energy and stability gains but are hindered by materials lacking sufficient Li+/e- conductivity, mechanical robustness and structural stability4-14. Here we present Li1.3Fe1.2Cl4, a cost-effective halide material that overcomes these challenges. Leveraging reversible Fe2+/Fe3+ redox and rapid Li+/e- transport within its framework, Li1.3Fe1.2Cl4 achieves an electrode energy density of 529.3 Wh kg-1 versus Li+/Li. Critically, Li1.3Fe1.2Cl4 shows unique dynamic properties during cycling, including reversible local Fe migration and a brittle-to-ductile transition that confers self-healing behaviour. This enables exceptional cycling stability, maintaining 90% capacity retention for 3,000 cycles at a rate of 5 C. Integration of Li1.3Fe1.2Cl4 with a nickel-rich layered oxide further increases the energy density to 725.6 Wh kg-1. By harnessing the advantageous dynamic mechanical and diffusion properties of all-in-one halides, this work establishes all-in-one halides as an avenue for energy-dense, durable cathodes in next-generation all-solid-state batteries.
PMID:
40562942
Bibliographic data and abstract were imported from PubMed on 26 Jun 2025.
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