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Tailoring Zinc Anode Interface with a Lard Derivative Coating for High-Performance Aqueous Batteries
Wenqiang Xu1, Shuyue Tan1, Di Deng2
1China-Spain Collaborative Research Center for Advanced Materials, College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing 400074, China.
Materials (Basel, Switzerland)
|July 28, 2026
Summary
A novel lard derivative coating (LDC) effectively stabilizes zinc anodes in aqueous zinc-ion batteries. This coating prevents dendrite growth and corrosion, enabling long-term, stable battery performance.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Aqueous zinc-ion batteries face challenges like zinc dendrite growth, hydrogen evolution, and interface passivation.
- These issues limit the cycle life and safety of zinc anodes.
Purpose of the Study:
- To develop a stable interface for zinc anodes using a lard derivative coating (LDC).
- To investigate the properties of LDC and its impact on zinc deposition and interfacial stability.
Main Methods:
- Fabrication of LDC on zinc anode via coating-calcination.
- Characterization using SEM, EDS, XRD, FTIR, and XPS.
- Electrochemical testing of LDC-modified zinc anodes in symmetric and asymmetric cells, and full cells.
Main Results:
- LDC-modified zinc anodes (LDC@Zn) show stable cycling for over 3500 hours.
- Achieved 99.8% coulombic efficiency over 2400 cycles in Zn||Cu asymmetric cells.
- Full cells maintained ~400 mAh/g capacity after 800 cycles at 5 A/g, demonstrating excellent rate capability and stability.
Conclusions:
- LDC interphase provides hydrophobic suppression of side reactions and zincophilic regulation of Zn2+ deposition.
- Synergistic balance between interfacial stability and controlled ion transport achieved.
- Demonstrated a scalable strategy for stable zinc anodes and advanced interfacial engineering.
