Electrical engineering

PEDOT:PSS

Nanotechnology

Electrode

Coating

Engineering

Physical chemistry

Chemistry

Materials science

Conformal coating

Diffusion barrier

Layer (electronics)

Cathode

Chemical engineering

Nanosheet

Advanced Materials Interfaces

Aqueous zinc‐ion batteries (ZIBs) have become research focus because of their cost‐effectiveness, high safety, and eco‐friendliness. Unfortunately, sluggish Zn 2+ diffusion kinetics and the poor cycling stability in cathode materials impede their large‐scale application. Herein, V 2 O 5 @poly(3,4‐ethylenedioxythiophene) (PEDOT) hybrid nanosheet arrays are uniformly deposited on carbon cloth (CC) as a superior ZIB cathode. The as‐fabricated V 2 O 5 @PEDOT/CC electrode displays a maximum capacity of 360 mAh g −1 at 0.1 A g −1 . Meanwhile, this hybrid array electrode also shows high rate capability with a specific capacity of 232 mAh g −1 even at a large current density of 20 A g −1 , and excellent cycling life (97% retention after 600 cycles at 1 A g −1 and 89% retention after 1000 cycles at 5 A g −1 ). The largely increased Zn‐storage performance of the V 2 O 5 @PEDOT nanosheet arrays results from the synergistic effects of the two components: the V 2 O 5 nanosheet arrays provide enough Zn‐storage active sites, while the PEDOT coating shell increases zinc ion/electron transport kinetics and further acts as a protective layer to restrain structural collapse during cycling.

Conformal Conducting Polymer Shells on V<sub>2</sub>O<sub>5</sub> Nanosheet Arrays as a High‐Rate and Stable Zinc‐Ion Battery Cathode

Conformal Conducting Polymer Shells on V2O5 Nanosheet Arrays as a High‐Rate and Stable Zinc‐Ion Battery Cathode

Conformal Conducting Polymer Shells on V₂O₅ Nanosheet Arrays as a High‐Rate and Stable Zinc‐Ion Battery Cathode