Fabrication of a Robust Zinc Powder Anode via Facile Integration of Copper Nanopowder as a Functional Conductive Medium
YS Jin and K Jin and WJ Ji and ZF Zhang and LS Gan and P Han and XH Yuan and LJ Fu and YP Wu, ADVANCED FUNCTIONAL MATERIALS, 35, 2418503 (2025).
DOI: 10.1002/adfm.202418503
Zinc powder is the key anode material for the commercialization of
aqueous Zn ion batteries (AZIBs), taking advantage of its cost-
effectiveness and ease of processing. However, they face challenges such
as severe dendrite growth, side reactions, and corrosion due to the
rough surface with high specific area. This paper proposes a low-cost,
simple, and scalable method to modify Zn powder-based anodes by
incorporating nano-Copper (NC) powder as a functional conductive agent,
and the modified Zn powder electrode is denoted as ZP-NC. This NC powder
modification enhances the electronic conductivity, lowers the charge
transfer activation energy, and provides an even electric field for
uniform Zn deposition. It further alleviates the electrochemical
corrosion during storage and cycling. Thus, the rate capability and
cycle stability of the Zn powder electrode are significantly enhanced
while keeping a high Zn utilization. With an optimized N/P ratio of 4.3,
the ZP-NC||NaV3O8
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