Citation: Xiaoying ZHENG, Shan FAN, Qinjin DAI, Wei DONG, Mengxue WANG, Yicheng REN, Yong ZHANG. Preparation of three-dimensional flower-like δ-MnO2 cathode materials and its aqueous zinc-ion battery performance[J]. Chinese Journal of Inorganic Chemistry, ;2026, 42(5): 925-932. doi: 10.11862/CJIC.20250352 shu

Preparation of three-dimensional flower-like δ-MnO2 cathode materials and its aqueous zinc-ion battery performance

  • Corresponding author: Shan FAN, fanshan@qqhru.edu.cn Yong ZHANG, 
  • Received Date: 24 November 2025
    Revised Date: 21 January 2026

Figures(7)

  • A 3D flower-like δ-MnO2 structure, self-assembled from nanosheets was constructed via a simple hydrothermal method. This 3D porous structure effectively captures abundant electrolyte ions and increases the Zn2+ concentration on the electrode surface, thereby optimizing Zn2+ transport pathways and accelerating the electrode reaction kinetics. Furthermore, the interconnected flower-like framework significantly enhanced the mechanical strength of the δ-MnO2 electrode, alleviating volume expansion during cycling and maintaining structural stability. The assembled aqueous zinc-ion batteries (AZIBs) based δ-MnO2 electrode demonstrated a high discharge specific capacity of 358.2 mAh·g-1 at 0.1 A·g-1 and excellent cycling stability, retaining a discharge specific capacity of 94.9 mAh·g-1 after 1 000 cycles.
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