Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 9, Issue 25, Pages 21251-21257Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b04161
Keywords
aluminum-ion battery; aluminum intercalation; multivalent ion battery; titanium sulfides; ionic liquid electrolyte
Funding
- University of California, Riverside
- National Science Foundation [CHE-1338173]
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We report the electrochemical intercalation-extraction of aluminum (Al) in the layered TiS2 and spinel-based cubic Cu0.31Ti2S4 as the potential cathode materials for rechargeable Al-ion batteries. The electrochemical characterizations demonstrate the feasibility of reversible Al intercalation in both titanium sulfides with layered TiS2 showing better properties. The crystallographic study sheds light on the possible Al intercalation sites in the titanium sulfides, while the results from galvanostatic intermittent titration indicate that the low AI(3+) diffusion coefficients in the sulfide crystal structures are the primary obstacle to facile Al intercalation-extraction.
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