Interfacial Architecture for Extra Li+ Storage in All-Solid-State Lithium Batteries
- Title
- Interfacial Architecture for Extra Li+ Storage in All-Solid-State Lithium Batteries
- Author
- 정윤석
- Keywords
- SECONDARY BATTERIES; LICOO2 ELECTRODE; SULFUR BATTERIES; TIS2; LI7LA3ZR2O12; TEMPERATURE; CATHODE; INTERCALATION; CHALLENGES; CONDUCTOR
- Issue Date
- 2014-07
- Publisher
- Nature Publishing Group
- Citation
- Scientific Reports, 2014, 4, P.1-9
- 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(-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 degrees 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.
- URI
- http://www.nature.com/articles/srep05572http://hdl.handle.net/20.500.11754/53503
- ISSN
- 2045-2322
- DOI
- 10.1038/srep05572
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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