Binder-Free Metal–Organic Framework-Derived Zn(CN)<sub>2</sub>/V<sub>2</sub>O<sub>3</sub>/Carbon Cathode Fabricated via Electrophoretic Deposition for High-Performance Zn-Ion Batteries

Binder-Free Metal–Organic Framework-Derived Zn(CN)<sub>2</sub>/V<sub>2</sub>O<sub>3</sub>/Carbon Cathode Fabricated via Electrophoretic Deposition for High-Performance Zn-Ion Batteries

In this study, a Zn(CN)<sub>2</sub>–V<sub>2</sub>O<sub>3</sub>–C composite cathode was synthesized via AC electrophoretic deposition (EPD) and evaluated for application in aqueous zinc-ion batteries (ZIBs). Here, we report for the first time a binder-free Zn(CN)&l...

Full description

Saved in:
Bibliographic Details
Main Authors: Hyemin Lee, Byoungnam Park
Format: Article
Language:English
Published: MDPI AG 2025-06-01
Series:Inorganics
Subjects:
Zn-ion batteries
electrophoretic deposition
charge storage
V<sub>2</sub>O<sub>3</sub>
Online Access:https://www.mdpi.com/2304-6740/13/6/194
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this study, a Zn(CN)<sub>2</sub>–V<sub>2</sub>O<sub>3</sub>–C composite cathode was synthesized via AC electrophoretic deposition (EPD) and evaluated for application in aqueous zinc-ion batteries (ZIBs). Here, we report for the first time a binder-free Zn(CN)<sub>2</sub>–V<sub>2</sub>O<sub>3</sub>–C composite cathode, using AC-EPD to create an ultrathin architecture optimized for probing the electrode–electrolyte interface without interference from additives or bulk effects. The composite combines Zn(CN)<sub>2</sub> for structural support, V<sub>2</sub>O<sub>3</sub> as the redox-active material, and carbon for improved conductivity. X-ray diffraction confirmed the presence of Zn(CN)<sub>2</sub> and V<sub>2</sub>O<sub>3</sub> phases, while scanning electron microscopy revealed a uniform, ultrathin film morphology. Electrochemical analysis demonstrated a hybrid charge storage mechanism with a b-value of 0.64, indicating both capacitive and diffusion-controlled contributions. The electrode delivered a high specific capacity (~250 mAh/g at 500 mA/g) with stable cycling performance. These results highlight the potential of metal–organic framework-derived composites for high-performance ZIB cathodes. The composite is especially effective when prepared via AC-EPD, which yields ultrathin, uniform films with strong adhesion and low agglomeration. This enhances energy storage performance and provides a reliable platform for focusing on interfacial charge storage, excluding the effect of binders on electrochemical performance.
ISSN:2304-6740

Similar Items