Interfacial Engineering of Co3O4@MXene for Superior Charge Storage: A Route to High-Capacitance Supercapacitors
We report an interracially engineered Co<sub>3</sub>O<sub>4</sub>@Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene hybrid as a high-rate charge-storage electrode. Low-temperature assembly under inert conditions preserves the MXene carbide while anchoring nanocrystalline Co<sub>3</sub>O<sub>4</sub> on conductive, ion-permeable sheets. XRD and FTIR confirm the structural integrity of MXene without TiO<sub>2</sub> formation. Electrochemically, cyclic voltammetry, Dunn analysis, and galvanostatic tests reveal mixed storage with a dominant pseudocapacitive contribution, while EIS fitting shows reduced charge-transfer resistance for the hybrid compared with either parent. Within a 0.6 V window in 2 M KOH, the composite delivers high specific charge and excellent rate retention, attributable to shortened diffusion paths and fast electron transport at the oxide-MXene interface. These results establish Co<sub>3</sub>O<sub>4</sub>@MXene as a robust, mechanism-consistent platform for high-power supercapacitors.
Authors
- Sooman Lim (ORCID: https://orcid.org/0000-0002-7336-5081)
- Qasim Raza (ORCID: https://orcid.org/0000-0001-5792-7016)
Institutions
- Jeonbuk National University (KR)
Publication Details
- Journal
- Micromachines
- Published
- 2025-11-24
- DOI
- https://doi.org/10.3390/mi16121313
- Citations
- 1
- Primary Topic
- Supercapacitor Materials and Fabrication
- Type
- article
- Field-Weighted Citation Impact
- 0.43
Funders
- National Research Foundation
- National Research Foundation of Korea
- Ministry of Science and ICT, South Korea