Recently, a research team at the Institute of Solid Materials, Hefei Institute of Physical Science employed in-situ techniques to synthesize a 3D porous CoN-Ni3N/N-C nanosheets that appeared like honeycomb, and nanobelt arrays of vanadium nitride to build flexible supercapacitor device of high-energy density.
The result of the study is published in Advanced Functional Materials.
For electrochemical applications, transition metal nitrides are potential electrode materials to fabricate high-performance energy storage devices. However, the structural instability of the material prevents their application. This makes it urgently build advanced cathode materials for high-energy-density storage devices that are flexible, wearable, and have a long life.
Meanwhile, for the study, the research team designed and fabricated integrated cathode with honeycomb-like CON-Ni3/N-C nanosheets. The sheets were cultivated on flexible carbon cloth using a mild solvothermal method after post-nitrogenizing treatment.
In fact, following the study, experiments carried out proved that this improved intrinsic conductivity, and concentration of the active sites. Therefore, this gives advantage for optimized CoN-Ni3N/N-C/CC, which can find use as integrated electrode for supercapacitor to achieve remarkable electrochemical performance.
The resultant supercapacitor provides outstanding energy density with maximum power density of 40 mW cm2, thus displaying excellent cycle stability.
Conclusively, the work provides a viable strategy to build high-energy, flexible wearable electronics for next-generation electrochemical energy storage devices.