Switchable Charge Storage Mechanism via in Situ Activation of MXene Enables High Capacitance and Stability in Aqueous Electrolytes.

ABSTRACT: The need for reliable renewable energy storage devices has become increasingly important. However, the performance of current electrochemical energy storage devices is limited by either low energy or power densities and short lifespans. Herein, we report the synthesis and characterization of multilayer Ti₄N₃T_x MXene in various aqueous electrolytes. We demonstrate that Ti₄N₃T_x can be electrochemically activated through continuous cation intercalation over a 10 day period using cyclic voltammetry. A wide operating window of 2 V is maintained throughout activation. After activation, capacitance at 2 mV s^-1 increases by 300%, 140%, and 500% in 1 M H₂SO₄, 1 M MgSO₄, and 1

SUBMITTER: Hsiao CC 

PROVIDER: S-EPMC10919077 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature