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Recent Advances in Conduction Mechanisms, Synthesis Methods, and Improvement Strategies for Li1+xAlxTi2-x(PO4)3 Solid Electrolyte for All-Solid-State Lithium Batteries

Journal Article · · Advanced Energy Materials
 [1];  [1];  [1];  [1];  [2];  [2];  [3];  [4]
  1. Harbin Institute of Technology, Weihai (China)
  2. Wanxiang A123 Systems Corp., Hangzhou (China). R&D Center
  3. Brown Univ., Providence, RI (United States)
  4. Argonne National Laboratory (ANL), Argonne, IL (United States)
With the increasing use of Li batteries for storage, their safety issues and energy densities are attracting considerable attention. Recently, replacing liquid organic electrolytes with solid-state electrolytes (SSE) has been hailed as the key to developing safe and high-energy-density Li batteries. In particular, Li1+xAlxTi2-x(PO4)3 (LATP) has been identified as a very attractive SSE for Li batteries due to its excellent electrochemical stability, low production costs, and good chemical compatibility. However, interfacial reactions with electrodes and poor thermal stability at high temperatures severely restrict the practical use of LATP in solid-state batteries (SSB). Herein, a systematic review of recent advances in LATP for SSBs is provided. Here, this review starts with a brief introduction to the development history of LATP and then summarizes its structure, ion transport mechanism, and synthesis methods. Challenges (e.g., intrinsic brittleness, interfacial resistance, and compatibility) and corresponding solutions (ionic substitution, additives, protective layers, composite electrolytes, etc.) that are critical for practical applications are then discussed. Last, an outlook on the future research direction of LATP-based SSB is provided.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO); National Science Foundation (NSF)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
2217031
Alternate ID(s):
OSTI ID: 1922540
Journal Information:
Advanced Energy Materials, Journal Name: Advanced Energy Materials Journal Issue: 4 Vol. 13; ISSN 1614-6832
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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