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Interfacial architecture for extra Li⁺ storage in all-solid-state lithium batteries

Shin, Bum Ryong ; Nam, Young Jin ; Kim, Jin Wook ; Lee, Young-Gi ; Jung, Yoon Seok

Scientific reports, 2014-07, Vol.4 (1), p.5572-5572, Article 5572 [Periódico revisado por pares]

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Título:
Interfacial architecture for extra Li⁺ storage in all-solid-state lithium batteries
Autor: Shin, Bum Ryong ; Nam, Young Jin ; Kim, Jin Wook ; Lee, Young-Gi ; Jung, Yoon Seok
Assuntos: Electrodes ; Lithium ; S phase
É parte de: Scientific reports, 2014-07, Vol.4 (1), p.5572-5572, Article 5572
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Descrição: The performance of nanocomposite electrodes prepared by controlled ball-milling of TiS₂ and a Li₂S-P₂S₅ solid electrolyte (SE) for all-solid-state lithium batteries is investigated, focusing on the evolution of the microstructure. Compared to the manually mixed electrodes, the ball-milled electrodes exhibit abnormally increased first-charge capacities of 416 mA h g(-1) and 837 mA h g(-1) in the voltage ranges 1.5-3.0 V and 1.0-3.0 V, respectively, at 50 mA g(-1) and 30°C. The ball-milled electrodes also show excellent capacity retention of 95% in the 1.5-3.0 V range after 60 cycles as compared to the manually mixed electrodes. More importantly, a variety of characterization techniques show that the origin of the extra Li(+) storage is associated with an amorphous Li-Ti-P-S phase formed during the controlled ball-milling process.
Editor: England: Nature Publishing Group
Idioma: Inglês

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