LiV3O8 as an intercalation-type cathode for aqueous aluminum-ion batteries
Publication Name
Journal of Materials Chemistry A
Abstract
Aluminum-ion batteries (AIBs) that operate with aqueous electrolytes exhibit considerably low cycling stabilities and rate properties owing to slow Al3+ diffusion kinetics. More importantly, AIB progress has been hindered by the lack of cathode materials capable of hosting Al3+. Recently, vanadium-based layered electrodes are potential storage hosts for multivalent charge carriers, including Al3+, Zn2+, Mn2+, and Ca2+. Thus, in this study, we examined the electrochemical Al3+-storage capabilities of LiV3O8 as a layered vanadium-based AIB cathode material. Though the LVO cathode supplied a high specific capacity (289 mA h g−1), the continual cycling capability (22.7% loss after 500 cycles at 0.59C (1C = 838 mA h g−1)) is slightly affected due to the structural deterioration associated with the high charge density of Al3+ ions. Furthermore, the shortfall in the Al3+ storage ability is examined using the ex situ XRD, XPS, SEM, and TEM studies. The research outcomes depict the difficulties associated with the Al3+ (de)intercalation in the layered type cathode, which can act as a likely reference for developing an optimized intercalation type cathode with stable cycle life for aqueous AIBs.
Open Access Status
This publication is not available as open access
Funding Number
2013M3A6B1078875
Funding Sponsor
Ministry of Science, ICT and Future Planning