Work

Laser induced MXene-derived oxide based advanced supercapacitor for wireless applications

Year: 2026

Type: article

Abstract: The development of energy storage systems for wireless and wearable electronics requires electrode materials that combine high energy density, mechanical flexibility, and long-term cycling stability. Here, we present a laser-engineering strategy for Ti 3 C 2 T x MXene electrodes that induces surface oxidation and forms a hybrid structure comprising in-situ grown TiO 2 nanostructures embedded on a conductive MXene matrix. This laser processing restructures the Ti 3 C 2 T x electrode surface into a porous, heterogeneous interface that enhances ion accessibility, suppresses sheet restacking, and introduces additional Ti 4+ /Ti 3+ redox-active sites. Electrochemical characterisation reveals enhanced areal capacitance and rate performance across aqueous, redox-active, and quasi-solid-state gel electrolytes compared to untreated Ti 3 C 2 T x and laser-induced graphene electrodes. Laser-induced Ti 3 C 2 T x -based supercapacitors exhibit a two-fold increase in specific areal capacitance compared to the laser-induced graphene-based cell, along with an excellent cycling stability over 20,000 charge-discharge cycles. Furthermore, integrating these cells with low-power electronic components, including wireless card readers, validates the potential of this approach for practical energy storage in next-generation portable devices. • Laser processing of Ti 3 C 2 T x MXene enhances electrode porosity, ion transport, and charge transfer. • The treated electrode doubles areal capacitance compared to laser-induced graphene cells. • The resulting supercapacitor powers a wireless card reader, showing promise for portable electronics.

Source: Applied Materials Today

DOI: 10.1016/j.apmt.2026.103224

Authors: Shidhin Mappoli, Sujit Deshmukh, Martin Pumera