Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 61, Issue 47, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202212587
Keywords
Aqueous Zn-Ion Batteries; Multicomponent Cu-Zn Alloy Layer; Surface Modification
Categories
Funding
- National Key Research and Development Program of China [2021YFF0500600]
- National Natural Science Foundation of China [U2001220]
- Local Innovative Research Teams Project of Guangdong Pearl River Talents Program [2017BT01N111]
- Shenzhen All-Solid-State Lithium Battery Electrolyte Engineering Research Center [XMHT20200203006]
- Shenzhen Technical Plan Project [RCJC20200714114436091, JCYJ20180508152210821, JCYJ20180508152135822]
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By constructing a Cu-Zn alloy interlayer on Zn foil, researchers successfully fabricated an ultra-stable Zn metal anode, which effectively suppresses dendrite growth and side reactions, leading to improved electrochemical performance.
Constructing stable surface modification layer is an effective strategy to suppress dendrite growth and side reactions of Zinc (Zn) metal anode in aqueous Zn-ion battery. Herein, a multicomponent Cu-Zn alloy interlayer with superior Zn affinity, high toughness and effective inhibition effect on lattice distortion is constructed on Zn foil (Cu-Zn@Zn) to fabricate ultra-stable Zn metal anode. Owning to the advantages of high binding energy of Cu-Zn alloy layer with Zn atoms and less contact area between metallic Zn and electrolyte, the as-prepared Cu-Zn@Zn electrode not only restricts the aggregation of Zn atoms, but also suppresses the pernicious hydrogen evolution and corrosion, leading to homogeneous Zn deposition and outstanding electrochemical performances. Accordingly, the symmetric battery with Cu-Zn@Zn electrode exhibits an ultra-long cycle life of 5496 h at 1 mA cm(-2) for 1 mAh cm(-2), and the Cu-Zn@Zn//V2O5 pouch cell demonstrates excellent cycling stability with a capacity retention of 88 % after 600 cycles.
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