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Suzuki, Shohei; Kawaji, Jun; Yoshida, Koji; Unemoto, Atsushi; Orimo, Shin-ichi
Journal of power sources, 08/2017, Letnik: 359Journal Article
A thermally durable all-solid-state lithium ion battery composed of a complex hydride, oxide electrolytes, and LiNi1/3Mn1/3Co1/3O2 active material is developed. This battery exhibits a discharge capacity of 56 mAh g−1, and the tenth capacity retention ratio is 29% at 150 °C owing to the large contact resistance between the electrolyte layer and the composite positive electrode layer. This large contact resistance is reduced by introducing an adhesive layer comprised of a mixture of LiBH4 and LiNH2 that is easily melted by thermal treatment and fills the voids and pores at the interface between the two layers. As a result, repeated charge-discharge cycles are successfully demonstrated at 150 °C with a high discharge capacity and discharge capacity retention ratio. The first discharge capacity is enhanced to 114 mAh g−1 and the capacity retention ratio at the tenth cycle is improved to 71%. These results demonstrate that using an adhesive layer is an effective measure to reduce the contact resistance and thereby enhance the performance of the battery. •All-solid-state battery with oxide and complex hydride electrolyte was developed.•Low melting point LiBH4+2LiNH2 reduced contact resistance among these electrolytes.•Repeated operation was demonstrated at 150 °C due to the reduced contact resistance.•Our battery realized a discharge capacity of 114 mAh g−1.
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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