کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7746084 1498280 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High capacity all-solid-state Cu-Li2S/Li6PS5Br/In batteries
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
High capacity all-solid-state Cu-Li2S/Li6PS5Br/In batteries
چکیده انگلیسی
Inorganic lithium ion fast conductor Li6PS5Br has high ionic conductivity and consequently is promising as solid electrolyte in all-solid-state lithium secondary batteries. Here we fabricated Li6PS5Br by ball milling and subsequent heat treatment. The argyrodite phase already formed at 300 °C and is electrochemically stable between 0 and 4 V. Preparing Cu-Li2S-argyrodite composite cathode mixtures by ball milling increases the initial charge and discharge capacity of all-solid-state Cu-Li2S/Li6PS5Br/In batteries compared to mortar-ground composite cathode mixtures. A charge capacity of 500 mAh/g and discharge capacity of 445 mAh/g were achieved using composite cathode powder ball milled for 30 min. However, batteries using composite cathode prepared by either method show similar reversible discharge capacity for a range of C rates as the capacity is mainly limited by volume change of cathode material and the mixed mobile ion effect. Rietveld refinements after 20 cycles show an incomplete conversion stage with partial Cu+ for Li+ insertion both in the active material and the solid electrolyte.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 262, 1 September 2014, Pages 183-187
نویسندگان
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