High-Performance Electrochemical Adhesives Enabled by Perfluorinated Sulfonic-Acid Ionomers with Precise Adhesion Control and Long-Term Switchability.

ABSTRACT: Electrically switchable adhesion enables the dynamic and on-demand modulation of adhesion through electrical control. Herein, a new class of electrochemical adhesives based on the perfluoro-sulfonic acid (PFSA) ionomers is presented, which deliver robust adhesion with precise tunability through modulation of the applied charge density. Remarkably, once activated, these adhesives maintain strong adhesion without continuous power input, enabling long-term programmable bonding. Electrochemically tunable adhesion between PFSA ionomers and copper substrates is investigated. A positive potential to the copper substrate promotes sulfonate-copper coordination at the interface, resulting in strong adhesion, whereas a negative bias triggers detachment. Fracture mechanics analysis reveals a linear re

SUBMITTER: Choi YJ 

PROVIDER: S-EPMC12622435 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature