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A High-Rate and Long-Life Aqueous Rechargeable Ammonium Zinc Hybrid Battery
Chunyang Li1,2, Dexin Zhang2, Fuxiang Ma3
1State Key Laboratory of Materials-oriented Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China.
Chemsuschem
|July 23, 2019
Summary
A new aqueous rechargeable ammonium-ion battery uses zinc and sodium iron hexacyanoferrate for improved energy storage. This cost-effective ammonium zinc hybrid battery offers high energy density and long cycle life for stationary applications.
Area of Science:
- Electrochemistry
- Materials Science
- Energy Storage
Background:
- Aqueous rechargeable ammonium-ion batteries (ARABs) are emerging for stationary energy storage.
- Current ARABs face challenges with low energy density and durability due to unsuitable anodes.
Purpose of the Study:
- To develop a cost-efficient and high-performance anode for ARABs.
- To fabricate a novel aqueous rechargeable ammonium zinc hybrid battery.
Main Methods:
- Fabrication of an aqueous rechargeable ammonium zinc hybrid battery.
- Utilizing corner-truncated sodium iron hexacyanoferrate nanocubes as the cathode.
- Employing low-cost zinc as the anode.
Main Results:
- The hybrid battery achieved an average working voltage of 1.3 V.
- Demonstrated high energy density (81.7 Wh/kg) and excellent rate capability.
- Exhibited a long lifespan with 92.1% capacity retention after 2000 cycles.
Conclusions:
- The developed ammonium zinc hybrid battery outperforms existing ARABs and aqueous hybrid batteries.
- This strategy provides a viable pathway for enhancing the practical application of ARABs.
- Highlights the potential of cost-efficient materials for advanced energy storage solutions.
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