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In Situ Buildup of Zinc Anode Protection Films with Natural Protein Additives for High-Performance Zinc Battery
Xin Zhang1, Tao Liao1, Tao Long2
1State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China.
ACS Applied Materials & Interfaces
|June 27, 2023
Summary
Ovalbumin (OVA) protein additive prevents dendrite growth and side reactions in aqueous zinc-ion batteries (ZIBs). This enhances battery stability and cycle life, paving the way for practical ZIB applications.
Area of Science:
- Electrochemistry
- Materials Science
- Biomaterials
Background:
- Aqueous zinc-ion batteries (ZIBs) face challenges like dendrite formation and side reactions, limiting their industrial use.
- Developing stable anode interfaces is crucial for advancing ZIB technology.
Purpose of the Study:
- To introduce ovalbumin (OVA) as a multifunctional electrolyte additive for aqueous ZIBs.
- To investigate OVA's mechanism in stabilizing the zinc anode and improving battery performance.
Main Methods:
- Experimental characterization techniques.
- Theoretical calculations.
- Electrochemical testing of Zn||Zn symmetrical and full batteries.
Main Results:
- OVA forms a self-healing protective film on the zinc anode, promoting uniform deposition and suppressing side reactions.
- Zn||Zn symmetrical batteries with OVA achieved over 2200 hours of cycle life.
- Zn||Cu and Zn||MnO2 full batteries demonstrated excellent cycling stability for 2500 cycles.
Conclusions:
- Ovalbumin effectively enhances the stability and performance of aqueous ZIBs.
- Natural protein molecules can be utilized to improve Zn2+ diffusion kinetics and anode interface stability.
- OVA shows significant potential for the practical application of aqueous ZIBs.
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