KAUST DepartmentFunctional Nanomaterials and Devices Research Group
Material Science and Engineering Program
Physical Science and Engineering (PSE) Division
KAUST Grant NumberOSR-CRG2018-3735
Embargo End Date2022-01-20
Permanent link to this recordhttp://hdl.handle.net/10754/667183
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AbstractAqueous Zn-based batteries are attractive because of the low cost and high theoretical capacity of the Zn metal anode. However, the Zn-based batteries developed so far utilize an excess amount of Zn (i.e., thick Zn metal anode), which decreases the energy density of the whole battery. Herein, we demonstrate an anode-free design (i.e., zero-excess Zn), which is enabled by employing a nanocarbon nucleation layer. Electrochemical studies show that this design allows for uniform Zn electrodeposition with high efficiency and stability over a range of current densities and plating capacities. Using this anode-free configuration, we showcase a Zn-MnO<sub>2</sub> battery prototype, showing 68.2% capacity retention after 80 cycles. Our anode-free design opens a new direction for implementing aqueous Zn-based batteries in energy storage systems.
CitationZhu, Y., Cui, Y., & Alshareef, H. N. (2021). An Anode-Free Zn–MnO2 Battery. Nano Letters. doi:10.1021/acs.nanolett.0c04519
SponsorsResearch reported in this work was supported by King Abdullah University of Science and Technology (KAUST) under the KAUST Stanford competitive research grant number: OSR-CRG2018-3735.
PublisherAmerican Chemical Society (ACS)
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