Nanoporous CaCO3 Coatings Enabled Uniform Zn Stripping/Plating for Long-Life Zinc Rechargeable Aqueous Batteries

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Litao Kang
  • Mangwei Cui
  • Fuyi Jiang
  • Yanfeng Gao
  • Hongjie Luo
  • Jianjun Liu
  • Wei Liang

Detail(s)

Original languageEnglish
Article number1801090
Journal / PublicationAdvanced Energy Materials
Volume8
Issue number25
Early online date17 Jul 2018
Publication statusPublished - 5 Sep 2018

Abstract

Zn-based batteries are safe, low cost, and environmentally friendly, as well as delivering the highest energy density of all aqueous battery systems. However, the application of Zn-based batteries is being seriously hindered by the uneven electrostripping/electroplating of Zn on the anodes, which always leads to enlarged polarization (capacity fading) or even cell shorting (low cycling stability). How a porous nano-CaCO3 coating can guide uniform and position-selected Zn stripping/plating on the nano-CaCO3-layer/Zn foil interfaces is reported here. This Zn-deposition-guiding ability is mainly ascribed to the porous nature of the nano-CaCO3-layer, since similar functionality (even though relatively inferior) is also found in Zn foils coated with porous acetylene black or nano-SiO2 layers. Furthermore, the potential application of this strategy is demonstrated in Zn|ZnSO4+MnSO4|CNT/MnO2 rechargeable aqueous batteries. Compared with the ones with bare Zn anodes, the battery with a nano-CaCO3-coated Zn anode delivers a 42.7% higher discharge capacity (177 vs 124 mAh g−1 at 1 A g−1) after 1000 cycles.

Research Area(s)

  • dendrites, metal anodes, nanoporous, stripping/plating, Zn-based batteries

Citation Format(s)

Nanoporous CaCO3 Coatings Enabled Uniform Zn Stripping/Plating for Long-Life Zinc Rechargeable Aqueous Batteries. / Kang, Litao; Cui, Mangwei; Jiang, Fuyi; Gao, Yanfeng; Luo, Hongjie; Liu, Jianjun; Liang, Wei; Zhi, Chunyi.

In: Advanced Energy Materials, Vol. 8, No. 25, 1801090, 05.09.2018.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review