Related Experiment Video
Updated: Aug 5, 2026
Rapid in-silico Battery Electrolyte Electrochemical Reaction Generation using 3T-VASP Multi-Scale Energy Minimization
Published on: August 22, 2025
Lithium Acetylacetonate Mediated Multidimensional Optimization for Reversible Zn Anodes
Weilin Yan1,2, Lufan Liu1,2, Jikai Qiu1,2
1Key Laboratory of Photovoltaic and Energy Conservation Materials, CAS, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui, People's Republic of China.
Lithium acetylacetonate (LA) effectively suppresses zinc dendrites and side reactions in aqueous zinc-ion batteries (AZIBs). This electrolyte additive significantly enhances battery stability and cycling performance for large-scale energy storage.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Aqueous zinc-ion batteries (AZIBs) offer safe, large-scale energy storage but face challenges like zinc dendrites and interfacial instability.
- Current limitations hinder the practical application and long-term cycling of AZIBs, necessitating advanced electrolyte solutions.
Purpose of the Study:
- To introduce lithium acetylacetonate (LA) as a multifunctional electrolyte additive for AZIBs.
- To address challenges of zinc dendrite growth, side reactions, and poor deposition reversibility in zinc anodes.
Main Methods:
- Investigated the effect of LA on Zn2+ solvation structure and water hydrogen-bonding network.
- Analyzed LA's selective adsorption on Zn (101) plane for ordered crystal texture and dendrite inhibition.
- Evaluated LA's modulation of interfacial ion dynamics for uniform zinc deposition.
Main Results:
- Achieved ultra-high coulombic efficiency (99.97% over 4000 cycles) in Zn//Cu half batteries.
- Demonstrated stable cycling (>1500 h) in Zn//Zn symmetric batteries under demanding conditions.
- Reported sustained capacity (83% after 10,000 cycles) in Zn//NH4V4O10 full batteries.
Conclusions:
- Lithium acetylacetonate (LA) effectively enhances AZIB performance by optimizing zinc anode behavior and interfacial stability.
- The molecular design strategy using LA provides a practical solution for improving long-term cycling stability in AZIBs.
- This work establishes a new paradigm for designing high-performance electrolyte additives for aqueous multivalent metal batteries.
