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Crystallographic Customization of Zinc Anode for High Performance Aqueous Metal Batteries
Ji-Zun Zhang1, Qing-Yuan Zhao1, Xin Wei1
1Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun 130012, PR China.
Nano Letters
|January 6, 2025
Summary
Researchers developed an amino acid additive for aqueous zinc metal batteries (AZMBs). This additive promotes uniform zinc deposition, enabling stable long-term cycling and high efficiency for next-generation energy storage.
Area of Science:
- Electrochemistry
- Materials Science
Background:
- Aqueous zinc metal batteries (AZMBs) are a promising alternative to lithium-ion batteries.
- Practical application of AZMBs is limited by issues like dendrite formation and low Coulombic efficiency.
Purpose of the Study:
- To enhance the performance and stability of AZMBs.
- To address the drawbacks hindering the practical application of AZMBs.
Main Methods:
- Introduction of an amino acid additive with screening properties.
- Modification of the zinc anode surface by selective erosion of Zn(002) crystallographic planes.
- Investigation of the additive's effect on zinc deposition and water inhibition.
Main Results:
- Achieved an ordered layered 3D anode structure with uniform zinc deposition.
- Demonstrated stable cycling for 3750 hours at 1 mA cm⁻² with 99.7% Coulombic efficiency.
- Obtained a cycling life of nearly 1000 hours at 10 mA cm⁻² (cumulative capacity > 5 Ah cm⁻²) and 80% capacity retention after 1000 cycles in Zn//V₂O₅ cells.
Conclusions:
- The amino acid additive effectively promotes reversible zinc plating/stripping.
- The study provides theoretical insights for developing highly reversible zinc anodes for advanced energy storage systems.
