کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7744295 | 1498223 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thin-film lithium batteries with 0.3-30â¯Î¼m thick LiCoO2 films fabricated by high-rate pulsed laser deposition
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
High-rate pulsed laser deposition was applied to the preparation of thick LiCoO2 cathode films, which were then used in the fabrication of thin-film batteries. The deposition rate of the LiCoO2 films was 2-3â¯Î¼m/h. The thin-film batteries showed an increase in capacity up to 470â¯Î¼Ah/cm2 with increasing cathode film thickness. The rate dependence of discharge capacity was analyzed using a diffusion model in which the chemical diffusion coefficient of lithium in the cathode determines the dynamic capacity. For the initial stage of discharge, the chemical diffusion coefficient was estimated to be 10â10â¯cm2/s. Conversely, the chemical diffusion coefficient decreases to ~10â12â¯cm2/s at the end of discharge. From the diffusion model, the available capacity was estimated as a function of cathode thickness. Crack formation inside the LiCoO2 film is also suggested as a cause of capacity limitation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 320, July 2018, Pages 38-44
Journal: Solid State Ionics - Volume 320, July 2018, Pages 38-44
نویسندگان
Yasutaka Matsuda, Naoaki Kuwata, Junichi Kawamura,