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The Introduction of a BaTiO3 Polarized Coating as an Interface Modification Strategy for Zinc-Ion Batteries: A
Diantao Chen1, Jiawei Zhang1, Qian Liu1
1Key Laboratory of Engineering Dielectric and Applications (Ministry of Education), Harbin University of Science and Technology, Harbin 150000, China.
International Journal of Molecular Sciences
|October 26, 2024
Summary
Introducing a BaTiO3 coating for aqueous zinc-ion batteries effectively prevents dendrite growth and side reactions. This piezoelectric interface modification enhances battery performance and scalability.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Aqueous zinc-ion batteries (AZIBs) offer a safe, cost-effective alternative to lithium-ion batteries.
- Key challenges for AZIBs include dendrite formation, hydrogen evolution reactions (HERs), and corrosion.
- Interface instability hinders the practical application and scalability of AZIBs.
Purpose of the Study:
- To investigate the use of a BaTiO3 (BTO) piezoelectric polarized coating for interface modification in AZIBs.
- To address dendrite growth, HERs, and corrosion issues in AZIBs.
- To provide theoretical insights into inhibiting dendrite growth and side reactions.
Main Methods:
- Coating AZIB interfaces with BaTiO3 (BTO) using its thermodynamically preferred (110) crystal plane.
- Analyzing BTO's surface energy, reactivity, and interlayer coupling with Zn.
- Studying Zn ion diffusion kinetics and the effect of the piezoelectric coating on deposition.
Main Results:
- BTO (110) exhibits low surface energy and minimal reactivity, ensuring thermodynamic stability and corrosion resistance.
- A stable junction between BTO (110) and Zn (002) was confirmed, enhancing system stability.
- The BTO coating effectively suppressed HERs and inhibited Zn dendrite growth via its piezoelectric effect, promoting uniform deposition.
Conclusions:
- BaTiO3 piezoelectric coating is a viable strategy for interface modification in AZIBs.
- The piezoelectric effect of BTO plays a crucial role in suppressing dendrite formation and side reactions.
- This approach offers a theoretical basis for improving AZIB performance and scalability.
