Facile Synthesis of a NiCo <sub>2</sub> O <sub>4</sub> Nanoparticles Mesoporous Carbon Composite as Electrode Materials for Supercapacitor
N. V. Nguyen, Thu Van Tran, Son T. Luong, Thao Manh Pham, Ky V. Nguyen, Thao Dinh Vu, Si Hieu Nguyen, To Van Nguyen
Abstract
Abstract Combination the materials together is a direct and forceful strategy to improve the electrochemical properties of each raw material. Herein, we present the method of hydrothermal process and treatment/calcination combination that is easy to synthesize a NiCo 2 O 4 nanoparticles‐mesoporous carbon composite (C/NiCo 2 O 4 ). The result study electrochemical properties of materials revealed that the C/NiCo2O4 composite has excellent electrochemical properties compare with pristine NiCo 2 O 4 or carbon. In particular, maximum specific capacitance of C/NiCo 2 O 4 material at a current density of 1 A.g −1 is 204.28 F.g −1 , meanwhile the C s of carbon and NiCo 2 O 4 are 25.06 F.g −1 and 178.78 F.g −1 , respectively. In addition, C/NiCo 2 O 4 material also showed excellent capacitance retention, C s maintained to 90.35% after 3000 charge‐discharge continuous cycles. The results show that the C/NiCo 2 O 4 is a promising material for application as supercapacitor electrode.