An Anode-Free Zn–MnO2 Battery

Yunpei Zhu; Yi Cui; Husam N. Alshareef

doi:10.1021/acs.nanolett.0c04519

An Anode-Free Zn–MnO2 Battery

Yunpei Zhu, Yi Cui, Husam N. Alshareef

Research output: Contribution to journal › Article › peer-review

156 Scopus citations

Abstract

Aqueous 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-MnO2 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.

Original language	English (US)
Journal	Nano Letters
DOIs	https://doi.org/10.1021/acs.nanolett.0c04519
State	Published - Jan 20 2021

Bibliographical note

KAUST Repository Item: Exported on 2021-02-03
Acknowledged KAUST grant number(s): OSR-CRG2018-3735
Acknowledgements: Research 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.

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10.1021/acs.nanolett.0c04519

https://repository.kaust.edu.sa/bitstream/10754/667183/1/An%20Anode-Free%20Zn-MnO2%20Battery.pdf

Cite this

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title = "An Anode-Free Zn–MnO2 Battery",

abstract = "Aqueous 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-MnO2 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.",

author = "Yunpei Zhu and Yi Cui and Alshareef, {Husam N.}",

note = "KAUST Repository Item: Exported on 2021-02-03 Acknowledged KAUST grant number(s): OSR-CRG2018-3735 Acknowledgements: Research 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.",

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doi = "10.1021/acs.nanolett.0c04519",

language = "English (US)",

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T1 - An Anode-Free Zn–MnO2 Battery

AU - Zhu, Yunpei

AU - Cui, Yi

AU - Alshareef, Husam N.

N1 - KAUST Repository Item: Exported on 2021-02-03 Acknowledged KAUST grant number(s): OSR-CRG2018-3735 Acknowledgements: Research 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.

PY - 2021/1/20

Y1 - 2021/1/20

N2 - Aqueous 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-MnO2 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.

AB - Aqueous 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-MnO2 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.

UR - http://hdl.handle.net/10754/667183

UR - https://pubs.acs.org/doi/10.1021/acs.nanolett.0c04519

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M3 - Article

C2 - 33470104

SN - 1530-6984

JO - Nano Letters

JF - Nano Letters

ER -

An Anode-Free Zn–MnO2 Battery

Abstract

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