Avoiding short circuits from zinc metal dendrites in anode by backside-plating configuration.
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.
Department of Materials Science and Engineering, Stanford University, 476 Lomita Mall, McCullough Building 343, Stanford, California 94305, USA.|Smart Design of Materials and Process Research-Domain, Toyota Central R&D Laboratories, Inc., 41-1 Nagakute, Aichi 480-1192, Japan.
Shougo
S
Higashi
Department of Materials Science and Engineering, Stanford University, 476 Lomita Mall, McCullough Building 343, Stanford, California 94305, USA.|School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
Seok Woo
SW
Lee
Department of Materials Science and Engineering, Stanford University, 476 Lomita Mall, McCullough Building 343, Stanford, California 94305, USA.
Jang Soo
JS
Lee
Smart Design of Materials and Process Research-Domain, Toyota Central R&D Laboratories, Inc., 41-1 Nagakute, Aichi 480-1192, Japan.
Kensuke
K
Takechi
Department of Materials Science and Engineering, Stanford University, 476 Lomita Mall, McCullough Building 343, Stanford, California 94305, USA.|SLAC National Accelerator Laboratory, Stanford Institute for Materials and Energy Sciences, 2575 Sand Hill Road, Menlo Park, California 94025, USA.
Yi
Y
Cui