Volume 16, Issue 22 2001323
Full Paper

Novel 3D Nanoporous Zn–Cu Alloy as Long-Life Anode toward High-Voltage Double Electrolyte Aqueous Zinc-Ion Batteries

Botian Liu

Botian Liu

Guangdong Institute of Semiconductor Industrial Technology Guangdong, Guangdong Academy of Sciences, Guangzhou, 510650 China

Department of Chemistry and Biological Engineering, Guilin University of Technology, Guilin, 541004 China

Siyuan Laboratory, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Materials, Department of Physics, Jinan University, Guangzhou, 510632 China

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Songjie Wang

Songjie Wang

Siyuan Laboratory, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Materials, Department of Physics, Jinan University, Guangzhou, 510632 China

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Zilong Wang

Zilong Wang

Siyuan Laboratory, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Materials, Department of Physics, Jinan University, Guangzhou, 510632 China

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Hang Lei

Hang Lei

Siyuan Laboratory, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Materials, Department of Physics, Jinan University, Guangzhou, 510632 China

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Zhitao Chen

Corresponding Author

Zhitao Chen

Guangdong Institute of Semiconductor Industrial Technology Guangdong, Guangdong Academy of Sciences, Guangzhou, 510650 China

E-mail: [email protected], [email protected]

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Wenjie Mai

Corresponding Author

Wenjie Mai

Guangdong Institute of Semiconductor Industrial Technology Guangdong, Guangdong Academy of Sciences, Guangzhou, 510650 China

Siyuan Laboratory, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Materials, Department of Physics, Jinan University, Guangzhou, 510632 China

E-mail: [email protected], [email protected]

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First published: 06 May 2020
Citations: 192

Abstract

The recharge ability of zinc metal-based aqueous batteries is greatly limited by the zinc anode. The poor cycling durability of Zn anodes is attributed to the dendrite growth, shape change and passivation, but this issue has been ignored by using an excessive amount of Zn in the past. Herein, a 3D nanoporous (3D NP) Zn–Cu alloy is fabricated by a sample electrochemical-assisted annealing thermal method combined, which can be used directly as self-supported electrodes applied for renewable zinc-ion devices. The 3D NP architectures electrode offers high electron and ion transport paths and increased material loading per unit substrate area, which can uniformly deposit/strip Zn and improve charge storage ability. Benefiting from the intrinsic materials and architectures features, the 3D NP Zn–Cu alloy anode exhibits high areal capacity and excellent cycling stability. Further, the fabricated high-voltage double electrolyte aqueous Zn–Br2 battery can deliver maximum areal specific capacity of ≈1.56 mAh cm−2, which is close to the level of typical commercial Li-ion batteries. The excellent performance makes it an ideal candidate for next-generation aqueous zinc-ion batteries.

Conflict of Interest

The authors declare no conflict of interest.

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