Enhanced Cathode-Electrolyte Interphase for Prolonged Cycling Stability of Aluminum-Selenium Batteries Using Locally Concentrated Ionic Liquid Electrolytes.

ABSTRACT: Al-Se batteries (ASeBs) with high theoretical specific capacity and discharge voltage are promising energy storage devices. However, the detrimental shuttle effect occurring in conventional ionic liquid electrolytes (ILEs) challenges their development. Herein, a thicker cathode/electrolyte interphase (CEI) is constructed via employing locally concentrated IL electrolytes (LCILEs) to overcome these issues. It is demonstrated that LCILEs facilitate the incorporation of Emim⁺ into the electrode/electrolyte interphases, and, meanwhile, more Al-Cl species deposits are observed in the CEI. The formed CEI effectively prevents the dissolution of poly-selenides, inhibiting their related parasitic reactions. These result in ASeBs, employing the LCILE, to deliver a specific discharge capac

SUBMITTER: Xu C 

PROVIDER: S-EPMC12015396 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature