Journal
CHEMELECTROCHEM
Volume 6, Issue 2, Pages 326-330Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/celc.201801390
Keywords
all-solid-state batteries; aluminum oxide; composite electrolytes; lithium polysulfides; lithium-sulfur batteries
Categories
Funding
- Ministerio de Economia y Competitividad (MINECO) of the Spanish Government through Proyectos I+D Retos program [ENE2015-64907-C2-1-R, ENE2016-81020-R]
- Basque Government through the GV-ELKARTEK-2016 program
- Basque Government [1-AFW-2017-4, 1-AFW-2017-2]
- Spanish Government [FJCI-2015-23898]
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Aluminum oxide (Al2O3) is a well-known electrolyte filler for stabilizing the Li-metal (Li-0) anode in all-solid-state Li-0-based batteries. However, its strong interactions with lithium polysulfides (PS) hinder the direct application of Al2O3-added electrolytes in all-solid-state lithium-sulfur batteries (ASSLSBs). Herein, the role of Al2O3 in ASSLSBs both as electrolyte filler and cathode additive is studied. The combination of Al2O3-added electrolyte and Al2O3-added S-8 cathode with optimum cell configuration could deliver an unprecedented discharge capacity of 0.85 mAh cm(-2) (C/10, 30 cycles) for polymer-based ASSLSBs. These results suggest that the rational incorporation of Al2O3 can lead simultaneously to PS anchoring and Li-0 anode stabilizing benefits from the ceramic filler, thus improving the electrochemical performance of ASSLSBs.
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