Kinetic regulation of MXene with water-in-LiCl electrolyte for high-voltage micro-supercapacitors.

ABSTRACT: MXenes are one of the key materials for micro-supercapacitors (MSCs), integrating miniaturized energy-storage components with microelectronics. However, the energy densities of MSCs are greatly hampered by MXenes' narrow working potential window (typically ≤0.6 V) in aqueous electrolytes. Here, we report the fabrication of high-voltage MXene-MSCs through the efficient regulation of reaction kinetics in 2D Ti₃C₂T _x MXene microelectrodes using a water-in-LiCl (WIL, 20 m LiCl) salt gel electrolyte. Importantly, the intrinsic energy-storage mechanism of MXene microelectrodes in WIL, which is totally different from traditional electrolytes (1 m LiCl), was revealed through in situ and ex situ characterizations. We validated that

SUBMITTER: Zhu Y 

PROVIDER: S-EPMC9283101 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature