Nano-Micro Letters ›› 2024, Vol. 16 ›› Issue (1): 112-. doi: 10.1007/s40820-024-01327-2

• ARTICLE • Previous Articles     Next Articles

Surface Patterning of Metal Zinc Electrode with an In-Region Zincophilic Interface for High-Rate and Long-Cycle-Life Zinc Metal Anode

Tian Wang1, Qiao Xi2, Kai Yao3, Yuhang Liu2, Hao Fu4, Venkata Siva Kavarthapu1, Jun Kyu Lee1, Shaocong Tang1, Dina Fattakhova-Rohlfing3, Wei Ai2(), Jae Su Yu1()   

  1. 1 Department of Electronics and Information Convergence Engineering, Institute for Wearable Convergence Electronics, Kyung Hee University, Yongin-si, Gyeonggi-do, 17104, Republic of Korea
    2 Frontiers Science Center for Flexible Electronics (FSCFE) and Shaanxi Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi’an, 710072, People’s Republic of China
    3 Institute of Energy and Climate Research: Materials Synthesis and Processing (IEK-1), Forschungszentrum Jülich GmbH, 52425, Jülich, Germany
    4 School of Chemical Engineering, Sungkyunkwan University, 2066 Seobu-Ro, Jangan-Gu, Suwon-si, Gyeonggi-do, Republic of Korea
  • Received:2023-09-18 Accepted:2023-12-14 Online:2024-01-01 Published:2024-02-09
  • Contact: Wei Ai, Jae Su Yu

Abstract:

The undesirable dendrite growth induced by non-planar zinc (Zn) deposition and low Coulombic efficiency resulting from severe side reactions have been long-standing challenges for metallic Zn anodes and substantially impede the practical application of rechargeable aqueous Zn metal batteries (ZMBs). Herein, we present a strategy for achieving a high-rate and long-cycle-life Zn metal anode by patterning Zn foil surfaces and endowing a Zn-Indium (Zn-In) interface in the microchannels. The accumulation of electrons in the microchannel and the zincophilicity of the Zn-In interface promote preferential heteroepitaxial Zn deposition in the microchannel region and enhance the tolerance of the electrode at high current densities. Meanwhile, electron aggregation accelerates the dissolution of non-(002) plane Zn atoms on the array surface, thereby directing the subsequent homoepitaxial Zn deposition on the array surface. Consequently, the planar dendrite-free Zn deposition and long-term cycling stability are achieved (5,050 h at 10.0 mA cm−2 and 27,000 cycles at 20.0 mA cm−2). Furthermore, a Zn/I2 full cell assembled by pairing with such an anode can maintain good stability for 3,500 cycles at 5.0 C, demonstrating the application potential of the as-prepared ZnIn anode for high-performance aqueous ZMBs.

Key words: Zn metal anode, Surface patterning, Directional Zn deposition, Aqueous Zn-I2 batteries