V-doped MoS2 and g-C3N4 integrated NiFe-MOF ternary electrode for high-performance asymmetric supercapacitors and oxygen evolution electrocatalysis

초록

The development of multifunctional electrode materials with efficient charge storage capability and catalytic activity remains a significant challenge for advanced energy technologies. Herein, a ternary NiFe-MOF/V-doped MoS2@g-C3N4 hybrid electrode was rationally constructed by integrating redox-active NiFe-MOF, defectengineered V-doped MoS2, and nitrogen-rich g-C3N4 frameworks for asymmetric supercapacitor and oxygen evolution reaction (OER) applications. The synergistic combination of these components provides abundant electroactive sites, enhanced electrical conductivity, improved electrolyte accessibility, and stable interfacial interactions. The optimized NiFe-MOF/V-doped MoS2@g-C3N4 electrode exhibits outstanding electrochemical performance in a three-electrode configuration, delivering a specific capacity of 1916C g_ 1 at 10 mV s_ 1 from cyclic voltammetry and 2511C g_ 1 at 2.0 A g_ 1 from galvanostatic charge-discharge measurements.

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