Optimizing Hydrothermal Temperature for Ni-Based OER Catalysts

DOI

10.2991/978-94-6239-668-5_23How to use a DOI?

Keywords

Oxygen Evolution Reaction (OER); Hydrothermal Synthesis; Electrocatalysis; Nickel-based electrodes

Abstract

Advancing electrochemical water splitting for sustainable hydrogen production depends on the development of robust and efficient oxygen evolution reaction (OER) electrocatalysts. Nickel-based materials, such as nickel hydroxide (Ni (OH)₂) and nickel oxyhydroxide (NiOOH), are attractive candidates for OER in alkaline environments due to their affordability and favorable redox characteristics. However, the effect of hydrothermal synthesis temperature on their structure and catalytic performance has not been fully clarified. In this study, we fabricated Ni(OH)₂/NiOOH thin films on nickel foam using hydrothermal synthesis at temperatures ranging from 120 ℃ to 180 ℃. The fabricated thin films were evaluated using field emission electron microscopy, linear sweep voltammetry, Tafel analysis, and measurements of double-layer capacitance (C_dl) and electrochemical surface area (ECSA). Our results show that both catalytic activity and surface properties are highly sensitive to hydrothermal temperature, with the film produced at 160 ℃ displaying the best OER performance as well as the highest C_dl and ECSA values. These findings highlight the importance of optimizing hydrothermal temperature to control the microstructure and active site density of Ni (OH)₂/NiOOH films, identifying 160 ℃ as the most effective condition for enhancing catalytic activity in alkaline water splitting.

Copyright

© 2026 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Elham Khorashadizade
AU  - Elahe Fattahy Ardakani
PY  - 2026
DA  - 2026/05/14
TI  - Optimizing Hydrothermal Temperature for Ni-Based OER Catalysts
BT  - Proceedings of the International Conference on Current Problems in Engineering and Applied Sciences (ICCPEAS 2025)
PB  - Atlantis Press
SP  - 214
EP  - 222
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6239-668-5_23
DO  - 10.2991/978-94-6239-668-5_23
ID  - Khorashadizade2026
ER  -