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Effect of Electrolyte Additive on the Electrochemical Stability of Aluminum-graphite Battery (Supporting Information)

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posted on 2023-05-15, 07:29 authored by Fengcui LI, Chengyuan LIU, Rujia LIU, Jiangyu YU, Zhiwei LIU

The effect of electrolyte additive 1,2-dichloroethane (DCE) on the electrochemical stability of aluminum-graphite battery using acetamide-AlCl3 electrolyte is investigated comparatively. Original dendritic and dead aluminum are observed in Al-Al cells at a high operation rate. Original dendritic and dead aluminum are observed in the anode and separator of Al-Al cells at a high operation rate. DCE is a preferred electrolyte additive to reduce the polarization of the acetamide-AlCl3 electrolyte. Furthermore, DCE can effectively suppress the dendrites on the Al anode in Al|acetamide-AlCl3|Al cells. Besides, it has a positive effect on improving the discharge specific capacity and cycle stability of aluminum-graphite batteries with a high coulombic efficiency over 300 cycles. This result indicates that organic additive is suitable to improve the electrochemical performance of aluminum-graphite batteries.

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Henan Province, China

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Corresponding author email address

liu_chy@126.com

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© 2023 The Author(s).

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