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Journal Article
Interfacial Architecture for Extra Li+ Storage in All-Solid-State Lithium Batteries
- Authors
- Bum Ryong Shin, Young Jin Nam, Jin Wook Kim, Young-Gi Lee, Yoon Seok Jung
- Issue Date
- 2014-07
- Citation
- Scientific Reports, v.4, pp.1-9
- ISSN
- 2045-2322
- Publisher
- Nature Publishing Group
- Language
- English
- Type
- Journal Article
- Abstract
- 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-1and 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.
- KSP Keywords
- All-solid-state lithium batteries, Ball-milled, Ball-milling process, Characterization techniques, Mixed electrodes, S phase, Solid electrolyte, capacity retention, nanocomposite electrodes
This work is distributed under the term of Creative Commons License (CCL)
(CC BY NC SA)
(CC BY NC SA)
