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Hyper-dendritic nanoporous zinc foam anodes

Author(s): Chamoun, Mylad; Hertzberg, Benjamin J; Gupta, Tanya; Davies, Daniel; Bhadra, Shoham; et al

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Abstract: The low cost, significant reduction potential and relative safety of the zinc electrode is a common hope for a reductant in secondary batteries, but it is limited mainly to primary implementation due to shape change. In this work, we exploit such shape change for the benefit of static electrodes through the electrodeposition of hyper-dendritic nanoporous zinc foam. Electrodeposition of zinc foam resulted in nanoparticles formed on secondary dendrites in a three-dimensional network with a particle size distribution of 54.1–96.0 nm. The nanoporous zinc foam contributed to highly oriented crystals, high surface area and more rapid kinetics in contrast to conventional zinc in alkaline mediums. The anode material presented had a utilization of ~88% at full depth-of-discharge (DOD) at various rates indicating a superb rate capability. The rechargeability of Zn0/Zn2+ showed significant capacity retention over 100 cycles at a 40% DOD to ensure that the dendritic core structure was imperforated. The dendritic architecture was densified upon charge–discharge cycling and presented superior performance compared with bulk zinc electrodes.
Publication Date: 24-Apr-2015
Citation: Chamoun, Mylad, Benjamin J. Hertzberg, Tanya Gupta, Daniel Davies, Shoham Bhadra, Barry Van Tassell, Can Erdonmez, and Daniel A. Steingart. "Hyper-dendritic nanoporous zinc foam anodes." NPG Asia Materials 7, no. e178 (2015): 1-8. doi: 10.1038/am.2015.32
DOI: doi:10.1038/am.2015.32
EISSN: 1884-4057
Pages: 1 - 8
Type of Material: Journal Article
Journal/Proceeding Title: NPG Asia Materials
Version: Final published version. This is an open access article.

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