High areal capacity, long cycle life 4 V ceramic all-solid-state Li-ion batteries enabled by chloride solid electrolytes

Laidong Zhou, Tong-Tong Zuo, Chun Yuen Kwok, Se Young Kim, Abdeljalil Assoud, Qiang Zhang, Jürgen Janek and Linda F. Nazar ()
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Laidong Zhou: University of Waterloo
Tong-Tong Zuo: Justus Liebig University
Chun Yuen Kwok: University of Waterloo
Se Young Kim: University of Waterloo
Abdeljalil Assoud: University of Waterloo
Qiang Zhang: Oak Ridge National Laboratory
Jürgen Janek: Justus Liebig University
Linda F. Nazar: University of Waterloo

Nature Energy, 2022, vol. 7, issue 1, 83-93

Abstract: Abstract All-solid-state Li batteries (ASSBs) employing inorganic solid electrolytes offer improved safety and are exciting candidates for next-generation energy storage. Herein, we report a family of lithium mixed-metal chlorospinels, Li2InxSc0.666−xCl4 (0 ≤ x ≤ 0.666), with high ionic conductivity (up to 2.0 mS cm−1) owing to a highly disordered Li-ion distribution, and low electronic conductivity (4.7 × 10−10 S cm−1), which are implemented for high-performance ASSBs. Owing to the excellent interfacial stability of the SE against uncoated high-voltage cathode materials, ASSBs utilizing LiCoO2 or LiNi0.85Co0.1Mn0.05O2 exhibit superior rate capability and long-term cycling (up to 4.8 V versus Li+/Li) compared to state-of-the-art ASSBs. In particular, the ASSB with LiNi0.85Co0.1Mn0.05O2 exhibits a long life of >3,000 cycles with 80% capacity retention at room temperature. High cathode loadings are also demonstrated in ASSBs with stable capacity retention of >4 mAh cm−2 (~190 mAh g−1).

Date: 2022
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DOI: 10.1038/s41560-021-00952-0

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