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<p>High-performance 3D-Zn@Zn<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> anode was constructed by a simple two-step strategy with 3D-Zn electrode prepared via electrodeposition followed by Zn<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> protective layer decorated on its surface via chemical reaction exhibiting good universality. 3D-Zn@Zn<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> anode demonstrated high hydrogen evolution overpotential and transference number of Zn<sup>2+</sup> besides low desolvation energy barrier and rapid transfer kinetics of Zn<sup>2+</sup>. Its symmetric cell could understand more than 1200&#xa0;h at 1&#xa0;mA&#xa0;cm<sup>−2</sup> for 1&#xa0;mA&#xa0;h&#xa0;cm<sup>−2</sup>. When the anode was assembled into zinc-ion battery with MnO<sub>2</sub> cathode, it delivered specific capacity of 229.43&#xa0;mA&#xa0;h&#xa0;g<sup>−1</sup> at 0.1&#xa0;A&#xa0;g<sup>−1</sup> as well as exhibited remarkable rate capability and long-term cycling stability with capacity retention of 65.0% and Coulombic efficiency of 99.6% after 400 cycles under 1&#xa0;A&#xa0;g<sup>−1</sup>. The synergistic effect was studied between Zn<sup>2+</sup>-conductive hopeite layer and 3D-Zn electrode with (002) crystal plane orientation as well as three-dimensional (3D) microstructure as a template.</p>

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Construction of interphase-modified 3D-Zn@Zn3(PO4)2 anode for zinc-ion batteries

  • 期刊论文

  • 发表日期：

    2025年11月7日

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  • Renze Pang,
  • Xueyu Dong,
  • Shaowei Wu,
  • Xinhua Cheng

摘要

High-performance 3D-Zn@Zn3(PO4)2 anode was constructed by a simple two-step strategy with 3D-Zn electrode prepared via electrodeposition followed by Zn3(PO4)2 protective layer decorated on its surface via chemical reaction exhibiting good universality. 3D-Zn@Zn3(PO4)2 anode demonstrated high hydrogen evolution overpotential and transference number of Zn2+ besides low desolvation energy barrier and rapid transfer kinetics of Zn2+. Its symmetric cell could understand more than 1200 h at 1 mA cm−2 for 1 mA h cm−2. When the anode was assembled into zinc-ion battery with MnO2 cathode, it delivered specific capacity of 229.43 mA h g−1 at 0.1 A g−1 as well as exhibited remarkable rate capability and long-term cycling stability with capacity retention of 65.0% and Coulombic efficiency of 99.6% after 400 cycles under 1 A g−1. The synergistic effect was studied between Zn2+-conductive hopeite layer and 3D-Zn electrode with (002) crystal plane orientation as well as three-dimensional (3D) microstructure as a template.