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Issue 2, 2016
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Chromate conversion coated aluminium as a light-weight and corrosion-resistant current collector for aqueous lithium-ion batteries

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Abstract

Aqueous batteries constructed using non-flammable water-based electrolytes have the potential to improve the safety and reduce the cost of energy storage to enable mass adoption of electric vehicles. The use of low-cost and lightweight aluminium foil as a current collector in aqueous batteries is tempting but also challenging due to corrosion reactions. Here we report chromate conversion coated (CCC) aluminium foil as a corrosion-resistant current collector in aqueous lithium-ion battery cathodes. CCC aluminium-based electrodes show better cycling stability and higher coulombic efficiency than those fabricated on stainless steel and titanium foils. Furthermore, CCC aluminium foil suppresses oxygen evolution at high potentials. The plausibility of using such lightweight corrosion-resistant current collectors for aqueous batteries marks an important step toward low-cost, high-energy, and safe energy storage.

Graphical abstract: Chromate conversion coated aluminium as a light-weight and corrosion-resistant current collector for aqueous lithium-ion batteries

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Publication details

The article was received on 14 Sep 2015, accepted on 15 Oct 2015 and first published on 15 Oct 2015


Article type: Paper
DOI: 10.1039/C5TA07366A
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J. Mater. Chem. A, 2016,4, 395-399

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    Chromate conversion coated aluminium as a light-weight and corrosion-resistant current collector for aqueous lithium-ion batteries

    S. Gheytani, Y. Liang, Y. Jing, J. Q. Xu and Y. Yao, J. Mater. Chem. A, 2016, 4, 395
    DOI: 10.1039/C5TA07366A

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