Wulan Kusuma Wardani, Ni Luh Wulan Septiani, Siti Wihdatul Himmah, Ida Hamidah, Markus Diantoro, Andrivo Rusydi, Huda Abdullah, Brian Yuliarto
This work reports on the preparation of nickel cobalt hydrogen phosphate as an electrode for supercapatteries. The morphology of the hydrogen phosphate was controlled by varying the ethanol-to-water ratio to 1:0, 5:1, 3:1, 2:1, and 1:1. It was found that a higher proportion of water resulted in a layered structure of the products. X-ray diffraction patterns and infrared spectra confirmed the formation of nickel cobalt hydrogen phosphate. As supercapattery electrode, the sample prepared with an ethanol-to-water ratio of 2:1, denoted as NiCoP1-4 exhibited a high specific capacity of 424 Cg−1 at a current density of 0.5 Ag−1 surpassing that of the electrode prepared using only ethanol. Furthermore, NiCoPi-4 demonstrated high stability with 96.3% retention after 5000 cycles. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2024.
Advanced Functional Materials Laboratory, Faculty of Industrial Technology, Institut Teknologi Bandung, Bandung, 40132, Indonesia; Research Center for Nanotechnology System, National Research and Innovation Agency (BRIN), South Tangerang, 15314, Indonesia; Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung, 40154, Indonesia; Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang 5, Malang, 65145, Indonesia; Center of Advanced Material for Renewable Energy (CAMRY), Universitas Negeri Malang, Jl. Semarang 5, Malang, Indonesia; Faculty of Science, National University of Singapore, 21 Lower Kent Ridge Rd, Singapore, 119077, Singapore; Department of Electrical, Electronic and System Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Selangor, Bangi, 43600, Malaysia; Research Center for Nanosciences and Nanotechnology (RCNN), Institut Teknologi Bandung, Bandung, 40132, Indonesia
