2D MoSe2-Ni(OH)2 nanohybrid as an efficient electrode material with high rate capability for asymmetric supercapacitor applications

By Balakrishnan Kirubasankar, Pazaniraja Palanisamy, S. Arunachalam, Vignesh Murugadoss, Subramania Angaiah. Chemical Engineering Journal, 2019

237 citations recorded by the source corpus.

Abstract Ni(OH)2 is recognized as a good electrode material for supercapacitors, but it suffers from capacitance decrease with repeated cycles at high current density. To enhance its electrochemical performance even at high current density, a newer two dimensional molybdenum diselenide – nickel hydroxide nanohybrid (2D MoSe2-Ni(OH)2) have been prepared by a simple one-step hydrothermal synthesis. The 2D MoSe2-Ni(OH)2 nanohybrid have an excellent electrochemical properties due to their synergistic effect. This 2D-2D hybrid electrode exhibits a higher specific capacitance of 1175 F g−1 than Ni(OH)2 nanosheets (933 F g−1) at 1 A g−1 and also maintains a high rate capability of 85.6% at 10 A g−1. In addition, the 2D MoSe2-Ni(OH)2 nanohybrid based asymmetric supercapacitor (ASC) is fabricated and provides a high energy density of 43 Wh kg−1, high power density of 8181 W kg−1 with the capacitance retention of 85% even after 5000 cycles at a high current density of 1 A g−1. When two ASC devices are assembled in series and then charged for 1 min, gives power to light-emitting-diode for more than 3 min suggesting the great significant of the prepared 2D MoSe2-Ni(OH)2 nanohybrid for excellent energy storage.

Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/eeb6099e17588d3e2ca1f6d8f0f8c11f3973c8ab