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Avoiding short circuits from zinc metal dendrites in anode by backside-plating configuration.

ABSTRACT: Portable power sources and grid-scale storage both require batteries combining high energy density and low cost. Zinc metal battery systems are attractive due to the low cost of zinc and its high charge-storage capacity. However, under repeated plating and stripping, zinc metal anodes undergo a well-known problem, zinc dendrite formation, causing internal shorting. Here we show a backside-plating configuration that enables long-term cycling of zinc metal batteries without shorting. We demonstrate 800 stable cycles of nickel-zinc batteries with good power rate (20?mA?cm(-2), 20 C rate for our anodes). Such a backside-plating method can be applied to not only zinc metal systems but also other metal-based electrodes suffering from internal short circuits.

SUBMITTER: Higashi S

PROVIDER: S-EPMC4897743 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature

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Avoiding short circuits from zinc metal dendrites in anode by backside-plating configuration.

Higashi Shougo S Lee Seok Woo SW Lee Jang Soo JS Takechi Kensuke K Cui Yi Y

Nature communications 20160606

Portable power sources and grid-scale storage both require batteries combining high energy density and low cost. Zinc metal battery systems are attractive due to the low cost of zinc and its high charge-storage capacity. However, under repeated plating and stripping, zinc metal anodes undergo a well-known problem, zinc dendrite formation, causing internal shorting. Here we show a backside-plating configuration that enables long-term cycling of zinc metal batteries without shorting. We demonstrat ...[more]

PMID: 27263471

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