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Electrochemical synthesis of nickel hydroxide from nitrate salt in the slit diaphragm electrolyzer for power sources application

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Title: Electrochemical synthesis of nickel hydroxide from nitrate salt in the slit diaphragm electrolyzer for power sources application

Authors: Kotok V. A., Kovalenko V. L.

Journal: ARPN Journal of Engineering and Applied Sciences

HEC Recognition History
Category From To
Y 2023-07-01 2024-09-30
Y 2022-07-01 2023-06-30
Y 2021-07-01 2022-06-30
X 2020-07-01 2021-06-30

Publisher: Khyber Medical College, Peshawar

Country: Pakistan

Year: 2019

Volume: 14

Issue: 14

Language: English

Categories
Nickel Hydroxide (2) Power Sources (1) Synthesis (183) Electrochemistry (255) Materials Science (8025)

Abstract

It was found that synthesis of nickel hydroxide synthesis in slit-diaphragm electrolyzer from nickel nitrate solution as catholyte is possible. It was discovered that synthesis only possible at low current densities (4-6 A/dm2) due to overheating of catholyte. Analysis of synthesized samples revealed that have low crystallinity layered (?+ß) Ni(OH)<sub>2</sub> structure, with increased content of ?-Ni(OH)<sub>2</sub>. A formation of phase that is intermediate between a-Ni(OH)<sub>2</sub> and ß-Ni(OH)<sub>2</sub> was discovered. Cyclic voltammetry studies revealed high electrochemical activity and cyclic stability of synthesized samples. It was noted, that further studies are needed to refine the proposed method for industrial applications.

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