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A family of oxychloride amorphous solid electrolytes for long-cycling all-solid-state lithium batteries

Shumin ZhangDepartment of Chemistry, University of Western Ontario, London, ON, N6A 5B7, CanadaFeipeng ZhaoDepartment of Mechanical and Materials Engineering, University of Western Ontario, London, ON, N6A 5B9, CanadaJiatang ChenDepartment of Chemistry, University of Western Ontario, London, ON, N6A 5B7, CanadaJiamin FuDepartment of Chemistry, University of Western Ontario, London, ON, N6A 5B7, CanadaJing LuoDepartment of Mechanical and Materials Engineering, University of Western Ontario, London, ON, N6A 5B9, CanadaSandamini H. AlahakoonDepartment of Chemistry, University of Western Ontario, London, ON, N6A 5B7, CanadaLo‐Yueh ChangNational Synchrotron Radiation Research Centre, 101 Hsin-Ann Road, Hsinchu, 30076, TaiwanRenfei FengCanadian Light Source Inc., University of Saskatchewan, Saskatoon, Saskatchewan, S7N 2V3, CanadaMohsen ShakouriCanadian Light Source Inc., University of Saskatchewan, Saskatoon, Saskatchewan, S7N 2V3, CanadaJianwen LiangDepartment of Mechanical and Materials Engineering, University of Western Ontario, London, ON, N6A 5B9, CanadaYang ZhaoDepartment of Mechanical and Materials Engineering, University of Western Ontario, London, ON, N6A 5B9, CanadaXiaona LiDepartment of Mechanical and Materials Engineering, University of Western Ontario, London, ON, N6A 5B9, CanadaLe HeInstitute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, PR ChinaYining HuangDepartment of Chemistry, University of Western Ontario, London, ON, N6A 5B7, CanadaTsun‐Kong ShamDepartment of Chemistry, University of Western Ontario, London, ON, N6A 5B7, Canada. [email protected]Xueliang SunDepartment of Mechanical and Materials Engineering, University of Western Ontario, London, ON, N6A 5B9, Canada. [email protected]

2023en

ABI

Annotatsiya

Abstract Solid electrolyte is vital to ensure all-solid-state batteries with improved safety, long cyclability, and feasibility at different temperatures. Herein, we report a new family of amorphous solid electrolytes, xLi 2 O-MCl y (M = Ta or Hf, 0.8 ≤ x ≤ 2, y = 5 or 4). xLi 2 O-MCl y amorphous solid electrolytes can achieve desirable ionic conductivities up to 6.6 × 10 −3 S cm −1 at 25 °C, which is one of the highest values among all the reported amorphous solid electrolytes and comparable to those of the popular crystalline ones. The mixed-anion structural models of xLi 2 O-MCl y amorphous SEs are well established and correlated to the ionic conductivities. It is found that the oxygen-jointed anion networks with abundant terminal chlorines in xLi 2 O-MCl y amorphous solid electrolytes play an important role for the fast Li-ion conduction. More importantly, all-solid-state batteries using the amorphous solid electrolytes show excellent electrochemical performance at both 25 °C and −10 °C. Long cycle life (more than 2400 times of charging and discharging) can be achieved for all-solid-state batteries using the xLi 2 O-TaCl 5 amorphous solid electrolyte at 400 mA g −1 , demonstrating vast application prospects of the oxychloride amorphous solid electrolytes.

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Identifikatorlar

DOI: 10.1038/s41467-023-39197-8

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