4.7 Review

Challenges and strategies for ultrafast aqueous zinc-ion batteries

Journal

RARE METALS
Volume 40, Issue 2, Pages 309-328

Publisher

NONFERROUS METALS SOC CHINA
DOI: 10.1007/s12598-020-01588-x

Keywords

Aqueous zinc-ion battery; Cathode materials; Energy density; Energy storage; Rate capacity; Ultrafast

Funding

  1. Scientific Research Project of Beijing Municipal Education Commission [KM201911417004]
  2. National Natural Science Foundation of China [51822201, 51972292]

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This review discusses the latest developments in ultrafast aqueous ZIBs and the rational electrode-designing strategies, highlighting methods to enhance fast (dis)charging performance.
With the rising demand for fast-charging technology in electric vehicles and portable devices, significant efforts have been devoted to the development of the high-rate batteries. Among numerous candidates, rechargeable aqueous zinc-ion batteries (ZIBs) are a promising option due to its high theoretical capacity, low redox potential of zinc metal anode and inherent high ionic conductivity of aqueous electrolyte. As the strong electrostatic interaction between Zn2+ and host generally leads to sluggish electrode kinetics, many strategies have been proposed to enhance fast (dis)charging performance. Herein, we review the state-of-the-art ultrafast aqueous ZIBs and focus on the rational electrode-designing strategies, such as crystal structure engineering, nanostructuring and morphology controlling, conductive materials introducing and organic molecule designing. Recent research directions and future perspectives are also proposed in this review.

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