A Bi-based artificial interphase to achieve ultra-long cycling life of Al-metal anode in non-aqueous electrolyte

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A Bi-based artificial interphase to achieve ultra-long cycling life of Al-metal anode in non-aqueous electrolyte
Title:
A Bi-based artificial interphase to achieve ultra-long cycling life of Al-metal anode in non-aqueous electrolyte
Journal Title:
Energy Storage Materials
Keywords:
Publication Date:
25 November 2023
Citation:
Kumar, S., Rama, P., Lieu, W. Y., Zhang, C., Busayaporn, W., Chinnadurai, D., Yang, G., Xing, Z., Li, Y., Abbas, Z., Liu, W., & Seh, Z. W. (2024). A Bi-based artificial interphase to achieve ultra-long cycling life of Al-metal anode in non-aqueous electrolyte. Energy Storage Materials, 65, 103087. https://doi.org/10.1016/j.ensm.2023.103087
Abstract:
Rechargeable aluminum-ion batteries (RAB) with Al-metal anode are regarded as cost-effective and environmentally sustainable energy storage systems. However, tapping the high volumetric capacity of the Al-anode has been a challenge because of the spontaneous and irreversible formation of the oxide layer on its surface that renders it electrochemically inactive. Though recently reported AlCl3-based electrolytes overcome this problem by breaking down this oxide layer, their highly corrosive nature hampers commercialization. Here, we investigate a novel approach to protect the Al-anode from severe oxidation by engineering an artificial protective interphase. A unique and less corrosive combination of Al(CF3SO3)3 salt and BiCl3 additive reacts with the Al-anode intrinsically to form an inorganic-rich protective bilayer. This layer is electronically insulating and significantly reduces the charge transfer resistance and surface activation energy at the anode, enabling plating/stripping at extremely low overpotential of <0.1 V that can be sustained for record-long cycling times of >4000 h.
License type:
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
Funding Info:
This research is supported by core funding from: Science and Engineering Research Council
Grant Reference no. :
Description:
ISSN:
2405-8297
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