کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1283394 | 1497903 | 2016 | 9 صفحه PDF | دانلود رایگان |
• a-SiOx films exhibit excellent anode properties in a solid electrolyte.
• a-SiO0.4 film shows exceptionally large reversible capacity over 2800 mAh g−1.
• a-SiO0.4 film shows low capacity fading rate of 0.06% during the first 100 cycles.
• a-SiO0.4 film shows very high rate capability comparable to that of pure a-Si.
This paper reports the effects of introducing oxygen into amorphous silicon films on their anode properties in all-solid-state lithium batteries. Although poor cycling performance is a critical issue in silicon anodes, it has been effectively improved by introducing even a small amount of oxygen, that is, even in Si-rich amorphous silicon suboxide (a-SiOx) films. Because of the small amount of oxygen in the films, high cycling performance has been achieved without lowering the capacity and power density: an a-Si film delivers discharge capacity of 2500 mAh g−1 under high discharge current density of 10 mA cm−2 (35 C). These results demonstrate that a-SiOx is a promising candidate for high-capacity anode materials in solid-state batteries.
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Journal: Journal of Power Sources - Volume 329, 15 October 2016, Pages 41–49