A Room‐Temperature Molten Hydrate Electrolyte for Rechargeable Zinc–Air Batteries
By Chih-Yao Chen, K. Matsumoto, K. Kubota, R. Hagiwara, Qian Xu. Advanced Energy Materials, 2019
162 citations recorded by the source corpus.
Aqueous Zn‐based batteries are attracting extensive interest because of their economic feasibility and potentially high energy density. However, poor rechargeability of Zn anode in conventional electrolytes resulting from dendrite formation and self‐corrosion hinders their practical implementation. Herein, a Zn molten hydrate composed of inorganic Zn salt and water is demonstrated as an advantageous electrolyte for solving these issues. In this electrolyte, dendrite‐free Zn deposition/dissolution reaction with a high Coulombic efficiency (≈99%) as well as long‐term stability, free from CO2 poisoning are realized. The resultant Zn–air cell exhibits a reversible capacity of 1000 mAh g(catalyst)−1 over 100 cycles at 30 °C. Combined with the intrinsic safety associated with aqueous chemistry and cost benefit of the raw material, the present Zn–air battery makes a strong candidate for large‐scale energy storage.
Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/ca2a7a50965e2394b576f75d73533ef558e8cb95
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Citations in the corpus
- Dendrites issues and advances in Zn anode for aqueous rechargeable Zn‐based batteries (2020, background): “In addition to the components, a higher concentration of electrolytes will usually contribute to higher conductivity and mitigated polarization.(65) When concentration reaches a certain level, another merit is to destroy the solvation-”