期刊
ELECTROCHIMICA ACTA
卷 428, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2022.140906
关键词
Solid electrolyte; Halide composite; Lithium ions; Ionic Conductivity; Cycling stability; Air Stability
资金
- National Natural Science Foundation of China [51972176]
- K. C. Wong Magna Fund in Ningbo University
The study demonstrates that solid electrolytes with added halides can suppress the generation of hydrogen sulfide, form a protective layer to prevent reaction with water molecules, and exhibit stability against dendrite growth, providing new prospects for the development of all-solid-state lithium batteries.
The design of solid electrolyte with resistance to dendrite growth and air stability is essential for the development of all-solid-state Li+ cells. The suppression of hydrogen sulfide was well controlled after adding the halide, and a protective layer formed to prevent the PS43- units in the electrolyte from reacting with H2O molecules. Moreover, the as-prepared low-temperature phase Li3PS4-LiI has good resistance to dendrite growth and excellent compatibility with Li metal. The Li/electrolyte/Li symmetric battery exhibits ultra-durable cycle stability for 1350 h at 0.25 mA cm-2. The details of influence rules of iodide introduction on the network and ions transmission are analyzed and proposed to explore the available electrolytes for all-solid-state battery.
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