A robust polyaniline hydrogel electrode enables superior rate capability at ultrahigh mass loadings.

ABSTRACT: Simultaneously achieving high mass loading and superior rate capability in electrodes is challenging due to their often mutually constrained nature, especially for pseudocapacitors for high-power density applications. Here, we report a robust porous polyaniline hydrogel (PPH) prepared using a facile ice-templated in situ polymerization approach. Owing to the conductive, robust, and porous nanostructures suitable for ultrafast electron and ion transport, the self-supporting pure polyaniline hydrogel electrode exhibits superior areal capacitance without sacrificing rate capability and gravimetric capacitance at an ultrahigh mass loading and notable current density. It achieves a high areal capacitance (15.2 F·cm^-2 at 500 mA·cm^-2) and excellent rate capability (~92.7% re

SUBMITTER: Li L 

PROVIDER: S-EPMC11298009 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature