A Carboxyl-Modified Polyaniline Cathode for High-Performance Aqueous Zinc-Ion Batteries.

ABSTRACT: Inherent conductivity and high redox activity endow polyaniline (PANI) with great potential to serve as a cathode material for aqueous zinc-ion batteries. However, compared with traditional strongly acidic electrolytes (pH < 1), its electrochemical performances are moderated in weakly acidic zinc salt electrolytes (pH > 3) because of spontaneous deprotonation. Herein, a carboxyl-modified PANI was designed and synthesized by introducing carboxyl groups at the para-position of the terminal benzene rings within the polymer chains. In this conjugated system, the electron density in the polymer chains was redistributed with a higher one around the substituent due to the electron-withdrawing effect of carboxyl groups and meanwhile carboxyl groups characterized by a proton donor render PANI achie

SUBMITTER: Sun Z 

PROVIDER: S-EPMC12693330 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature