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

Document Type

Article

Publication Date

3-1-2023

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

Keywords

Charge transfer, Copper compounds, Design of experiments, Electrochemical electrodes, Energy storage, Fabrication

Publication Title

Journal of The Electrochemical Society

Divisions

Science,PHYSICS

Volume

170

Issue

3

Publisher

Electrochemical Society

Publisher Location

65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA

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