Journal
APPLIED PHYSICS LETTERS
Volume 105, Issue 8, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4893666
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Funding
- WPI-AIMR, Tohoku University [4]
- Integrated Materials Research Center for the Low-Carbon Society (LC-IMR), Tohoku University
- JSPS KAKENHI [25220911]
- Advanced Low Carbon Technology Research and Development Program (ALCA) from the Japan Science and Technology Agency (JST)
- Grants-in-Aid for Scientific Research [25630437, 26820311] Funding Source: KAKEN
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Stable battery operation of a bulk-type all-solid-state lithium-sulfur battery was demonstrated by using a LiBH4 electrolyte. The electrochemical activity of insulating elemental sulfur as the positive electrode was enhanced by the mutual dispersion of elemental sulfur and carbon in the composite powders. Subsequently, a tight interface between the sulfur-carbon composite and the LiBH4 powders was manifested only by cold-pressing owing to the highly deformable nature of the LiBH4 electrolyte. The high reducing ability of LiBH4 allows using the use of a Li negative electrode that enhances the energy density. The results demonstrate the interface modification of insulating sulfur and the architecture of an all-solid-state Li-S battery configuration with high energy density. (C) 2014 AIP Publishing LLC.
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