Stable cyclability of porous Si anode applied for sulfide-based all-solid-state batteries

Porous Si was applied as the anode material to all-solid-state lithium-ion batteries with Li3PS4 electrolyte. The ball-milled porous Si composite anode exhibited a high capacity retention over 90 % at 100 cycles. In contrast, the poorer cycle stability was observed for the non-porous Si composite an...

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Bibliographic Details
Published in:Energy procedia 2019-01, Vol.156, p.183-186
Main Authors: Okuno, Ryota, Yamamoto, Mari, Terauchi, Yoshihiro, Takahashi, Masanari
Format: Article
Language:English
Subjects:
all-solid-state battery
anode
Lithium ion battery
porous Si
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Summary:Porous Si was applied as the anode material to all-solid-state lithium-ion batteries with Li3PS4 electrolyte. The ball-milled porous Si composite anode exhibited a high capacity retention over 90 % at 100 cycles. In contrast, the poorer cycle stability was observed for the non-porous Si composite anodes. The structural models were proposed to consistently explain all the cycle characteristics. We believe that the pores in Si particles relieved the large volume change during the lithiation and delithiation, resulting in the high capacity retention.
ISSN:1876-6102
1876-6102
DOI:10.1016/j.egypro.2018.11.125