Optimization and Fabrication of Binder-Free Nickel-Copper Phosphate Battery-type Electrode Using Microwave-Assisted Hydrothermal Method

Gerard, Ong and Numan, Arshid and Khalid, Mohammad and Ramesh, S. and Ramesh, K. (2023) Optimization and Fabrication of Binder-Free Nickel-Copper Phosphate Battery-type Electrode Using Microwave-Assisted Hydrothermal Method. Journal of The Electrochemical Society, 170 (3). ISSN 0013-4651, DOI https://doi.org/10.1149/1945-7111/acc213.

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Abstract

In this study, a binder-free nickel-copper phosphate battery-type electrode was fabricated using a microwave-assisted hydrothermal technique. The fabrication process was optimized with Design of Experiment (DoE) software and then validated experimentally. The electrode made at 90 degrees C for 12.5 min, with a Ni:Cu precursor ratio of 3:1, had the highest specific capacity. The experimental specific capacity of the optimized nickel-copper phosphate (Ni3-Cu-P) binder-free electrode was 96.2% of the theoretical value predicted by the software, which was within 10% error. Moreover, the growth of amorphous Ni3-Cu-P electrode material with irregular microspheres of small size was observed on the surface of nickel foam. These amorphous microspherical shapes of the Ni3-Cu-P electrode material provide more electroactive sites and a larger active surface area for faradaic reaction. In electrochemical energy storage applications, the Ni3-Cu-P electrode outperformed the bare Ni-P and Cu-P electrodes, with the highest ar

Item Type: Article
Funders: UNSPECIFIED
Uncontrolled Keywords: Charge transfer; Copper compounds; Design of experiments; Electrochemical electrodes; Energy storage; Fabrication
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Faculty of Science
Faculty of Science > Department of Physics
Depositing User: Ms Zaharah Ramly
Date Deposited: 25 Oct 2024 04:08
Last Modified: 25 Oct 2024 04:08
URI: http://eprints.um.edu.my/id/eprint/38494

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