Electron-conductive binder for silicon negative electrode enabling low-pressure all-solid-state batteries.

ABSTRACT: While solid electrolyte-excluded Si electrodes can form in situ lithiated monolithic structures with minimal side reactions, their poor performance at low operating pressures remains a formidable challenge for all-solid-state batteries. Herein, we propose an electrically conductive binder-poly(3,4-ethylenedioxythiophene):poly((styrene sulfonic acid)_x-co-(maleic acid)_y) (PEDOT:P(SS_x-co-MA_y))-that is scalable, fluorine-free, and water-processable. This binder offers sufficient e^--conductivity to eliminate carbon additives, while ensuring strong adhesion and electrochemical stability in contrast to conventional liquid electrolyte systems. Ex situ measurements reveal disrupted e-connectivity during delithiation at 5 MPa, resolved by employ

SUBMITTER: Jun S 

PROVIDER: S-EPMC12774888 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature