Direct and Binder-Free MXene-Assisted Cobalt Manganese Phosphate Electrode Fabrication on Carbon Cloth by Electrosynthesis for Efficient Supercapacitors
Sajjad Hussain, Pranav K. Katkar, Dhanasekaran Vikraman, Zulfqar Ali Sheikh, Ghazanfar Nazir, Khalid Mujasam Batoo, Deok‐kee Kim, Hyun‐Seok Kim, Jongwan Jung
Abstract
In this work, MXene-assisted cobalt manganese phosphate (MXene-CMP) thin films with various Co/Mn compositions were prepared on a carbon cloth (CC) substrate via an easy and efficient low-cost electrodeposition route. MXene-CMP thin films were further used as polymer-free active materials for hybrid supercapacitors. The structural, compositional, and surface properties of the prepared MXene-CMP hybrid thin films were characterized using the latest analytical methods. The H-3 electrode exhibited enhanced specific capacitance (840 F·g-1 at 2 A·g-1) with exceptional robust performance. Additionally, a symmetric H-3 MXene-CMP supercapacitor device also demonstrated a high energy density of 48 Wh·kg-1 at 1.5 kW·kg-1 power density and holds better cyclability (93% of its initial value after 5000 cycles). Finally, this work explored the strong potential of MXene-attached bimetallic phosphates for solving the electrochemical shortcomings of energy storage devices.