Effect of the electrolyte on K-metal batteries

Justine Touja (1, 2) , Phuong Nam Le Pham (1, 3) , Nicolas Louvain (1, 2, 3) , Laure Monconduit (1, 2, 3) , Lorenzo Stievano (1, 2, 3)

1 ICGM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier
2 RS2E - Réseau sur le stockage électrochimique de l'énergie
3 ALISTORE-ERI - Advanced Lithium Energy Storage Systems - ALISTORE-ERI

The comparison of different electrolytes showed that both salt concentration and anion are key parameters for controlling the performance of K-metal batteries. Among the different tested electrolytes, 5 M KTFSI in DME exhibits the best stability at high potential and good performance in K|Prussian blue cells.

Mots clés: Anode materials; Electrolytes; K-ion batteries; Metal anodes; Potassium anode; Solvent-in-Salt

Domaines: Matériaux

Justine Touja, Phuong Nam Le Pham, Nicolas Louvain, Laure Monconduit, Lorenzo Stievano. Effect of the electrolyte on K-metal batteries. Chemical Communications, 2020, 56 (93), pp.14673-14676. ⟨10.1039/D0CC05024E⟩. ⟨hal-03022586⟩