Tuning Vertical Electrodeposition for Dendrites-Free Zinc-Ion Batteries

Manipulating the crystallographic orientation of zinc deposition is recognized as an effective approach to address zinc dendrites and side reactions for aqueous zinc-ion batteries (ZIBs). We introduce 2-methylimidazole (Mlz) additive in zinc sulfate (ZSO) electrolyte to achieve vertical electrodeposition with preferential orientation of the (100) and (110) crystal planes. Significantly, the zinc anode exhibited long lifespan with 1500 h endurance at 1 mA cm–2 and an excellent 400 h capability at a depth of discharge (DOD) of 34% in Zn||Zn battery configurations, while in Zn||MnO2 battery assemblies, a capacity retention of 68.8% over 800 cycles is attained. Theoretical calculation reveals that the strong…

• NN
  National Natural Science Foundation of China

  Awards: N_PolyU502/21, CRS_PolyU504_22
• CU
  Chulalongkorn University

  Award: N42A660383
• RG
  Research Grants Council, University Grants Committee

  Awards: CRS_PolyU504_22, N_PolyU502/21, C1003-23Y, CityU11308923
• NS
  Natural Science Foundation of Hubei Province

  Awards: 2022CFD034, 2023AFB155
• NR
  National Research Council of Thailand
• ST
  Science, Technology and Innovation Commission of Shenzhen Municipality

  Award: JCYJ20210324134012034
• TS
  Thailand Science Research and Innovation

  Award: B05F640153
• SA
  Science and Technology Department of Hubei Province

  Award: 2019AAA164
• NK
  National Key Research and Development Program of China

  Awards: 2022YFB3807700, 2021YFA1501101