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Issue 35, 2019
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Gel electrolytes with a wide potential window for high-rate Al-ion batteries

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Abstract

The electrolyte system of rechargeable aluminium-ion batteries (AIBs) is an urgent topic on account of the development in large-scale applications. In addition to the energy storage capabilities, enlargement of the electrolyte potential window is also a significant strategy for substantially boosting the energy density of the AIBs. To achieve these goals, here we demonstrate an Et3NHCl-based gel-polymer electrolyte with a wide electrochemical potential window for high-rate quasi-solid-state AIBs. Particularly, such a quasi-solid-state AIB presents stable specific capacities, maintaining around 90 mA h g−1 with long-term cycling under a high current density. More importantly, the Et3NHCl-based gel-polymer electrolyte here is not only favorable for increasing the cut-off charging potential, but also has various advantages, including a robust electrode–electrolyte interface, wide-temperature operating abilities and stability in a moist environment. Thus, the results may open a new avenue for low-cost and safe energy storage systems based on electrochemical technologies and applications.

Graphical abstract: Gel electrolytes with a wide potential window for high-rate Al-ion batteries

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Publication details

The article was received on 25 Jun 2019, accepted on 06 Aug 2019 and first published on 08 Aug 2019


Article type: Paper
DOI: 10.1039/C9TA06815E
J. Mater. Chem. A, 2019,7, 20348-20356

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    Gel electrolytes with a wide potential window for high-rate Al-ion batteries

    Z. Yu, S. Jiao, J. Tu, W. Song, H. Lei, H. Jiao, H. Chen and D. Fang, J. Mater. Chem. A, 2019, 7, 20348
    DOI: 10.1039/C9TA06815E

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