High areal capacity, long cycle life 4 V ceramic all-solid-state Li-ion batteries enabled by chloride solid electrolytes
- Univ. of Waterloo, ON (Canada). Waterloo Inst. for Nanotechnology; Argonne National Lab. (ANL), Argonne, IL (United States). Joint Center for Energy Storage Research (JCESR)
- Justus Liebig Univ., Giessen (Germany)
- Univ. of Waterloo, ON (Canada). Waterloo Inst. for Nanotechnology
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
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. Additionally, high cathode loadings are also demonstrated in ASSBs with stable capacity retention of >4 mAh cm-2 (~190 mAh g-1).
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1869086
- Journal Information:
- Nature Energy, Journal Name: Nature Energy Journal Issue: 1 Vol. 7; ISSN 2058-7546
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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