کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7745881 | 1498280 | 2014 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of Li pre-doping on charge/discharge properties of Si thin flakes as a negative electrode for Li-ion batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effects of Li pre-doping on charge/discharge properties of Si thin flakes as a negative electrode for Li-ion batteries Effects of Li pre-doping on charge/discharge properties of Si thin flakes as a negative electrode for Li-ion batteries](/preview/png/7745881.png)
چکیده انگلیسی
To compensate the large irreversible capacity (Qirr), lithium was pre-doped to Si thin flakes (Si Leaf Powder® (Si-LP), thickness: 100 nm) for different times, and its effects on the charge/discharge characteristics such as reversible capacity, cycleability, and rate-capability were investigated in detail. The charge/discharge test results showed that a large initial Qirr of ca. 2300 mAh gâ 1 for the Si-LP can be completely compensated by Li pre-doping, and a high capacity (> 2500 mAh gâ 1) was obtained for pre-doped Si-LPs. The pre-doping did not cause any harmful effects on cycleability as long as lithium was uniformly pre-doped. The addition of vinylene carbonate to the electrolyte solution in the pre-doping and in the test cell greatly improved the cycleability, and a high discharge capacity of ca. 2300 mAh gâ 1 was kept after 40 cycles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 262, 1 September 2014, Pages 39-42
Journal: Solid State Ionics - Volume 262, 1 September 2014, Pages 39-42
نویسندگان
Takashi Okubo, Morihiro Saito, Chihiro Yodoya, Akika Kamei, Masato Hirota, Toshio Takenaka, Toyoki Okumura, Akimasa Tasaka, Minoru Inaba,