Gradient design of imprinted anode for stable Zn-ion batteries

Abstract Achieving long-term stable zinc anodes at high currents/capacities remains a great challenge for practical rechargeable zinc-ion batteries. Herein, we report an imprinted gradient zinc electrode that integrates gradient conductivity and hydrophilicity for long-term dendrite-free zinc-ion batteries. The gradient design not only effectively prohibits side reactions between the electrolyte and the zinc anode, but also synergistically optimizes electric field distribution, zinc ion flux and local current density, which induces preferentially deposited zinc in the bottom of the microchannels and suppresses dendrite growth even under high current densities/capacities. As a result, the imprinted gradient…

• NU
  Northwestern University
• NP
  Northwestern Polytechnical University

  Award: CX2021042
• NK
  National Key Research and Development Program of China

  Award: 2022YFE0121000
• FR
  Fundamental Research Funds for the Central Universities