Hybrid Organic–Inorganic Additive for Robust Al Anode in Alkaline Aluminum–Air Battery

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Author(s)
Miao, Di
Li, Shiliang
Jin, Dongxiao
Long, Jiangtao
Qu, Jie
Wang, Yun
Wu, Zhenzhen
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2023
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Abstract

Aluminum-air batteries (AABs), known for their high energy density, environmental friendliness, and cost-effectiveness, show immense promise in the realm of energy conversion applications. Nonetheless, their commercialization has encountered inherent challenges of Al anode corrosion and material degradation. In this study, economical hybrid electrolyte additives to inhibit the Al corrosion are developed, safeguarding the integrity of the Al anode. Due to the synergistic interplay between the organic compound dithiothreitol, and inorganic compounds zinc chloride, a robust zinc film is formed on the Al surface This Zn film plays a pivotal role in quelling parasitic hydrogen evolution reactions that typically can plague the Al electrode. Consequently, the as-prepared hybrid additive culminates in a remarkable enhancement to AABs, delivering exceptional discharge capacity of 1793.37 mAh g-1 , high energy density of 2047 Wh kg-1 , and excellent battery longevity (over 20 h in on/off cycling tests). This study, therefore, introduces a novel approach in utilizing hybrid electrolyte additives to effectively counteract corrosion-related challenges and boost the stability and performance of AABs.

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Small Methods

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© 2023 The Authors. Small Methods published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Electrical engineering

Nanotechnology

ZnCl2

aluminum-air batteries

corrosion inhibition

dithiothreitol

hybrid additives

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Miao, D; Li, S; Jin, D; Long, J; Qu, J; Wang, Y; Wu, Z, Hybrid Organic–Inorganic Additive for Robust Al Anode in Alkaline Aluminum–Air Battery, Small Methods, 2023, pp. e2301255

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