Iodine Promoted Ultralow Zn Nucleation Overpotential and Zn-Rich Cathode for Low-Cost, Fast-Production and High-Energy Density Anode-Free Zn-Iodine Batteries,Nano-Micro Letters

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Iodine Promoted Ultralow Zn Nucleation Overpotential and Zn-Rich Cathode for Low-Cost, Fast-Production and High-Energy Density Anode-Free Zn-Iodine Batteries
Nano-Micro Letters ( IF 31.6 ) Pub Date : 2022-10-26 , DOI: 10.1007/s40820-022-00948-9
Yixiang Zhang ₁ , Lequan Wang ₁ , Qingyun Li ₁ , Bo Hu ₁ , Junming Kang ₁ , Yuhuan Meng ₁ , Zedong Zhao ₁ , Hongbin Lu _{1,

2}

Affiliation

The I₃⁻ additive promoted in situ formation of zincophilic Cu nanoclusters on commercial Cu foil, which achieves uniform Zn deposition with ultralow nucleation overpotential and high reversibility.
The Zn-rich ZnI₂ cathode confined by graphene/polyvinyl pyrrolidone heterostructure shows enhanced conductivity and shuttle effect suppression, providing sufficient Zn²⁺ for the anode stably.
The assembled anode-free Zn-iodine battery exhibits attractive features for commercialization: low cost, fast production, significantly increased energy density and durable cycle stability under practical application conditions.