Electrodeposition and morphology of Ni, Co and Ni–Co alloy powders Part II. Ammonium chloride supporting electrolyte
Abstract
Polarization characteristics of the processes of Ni and Co powders and Ni-Co alloy powders electrodeposition from ammonium chloride containing supporting electrolyte and their morphologies are investigated as a function of Ni2+ and Co2+ ions concentrations. It is found that the shape of the polarization curves in all cases is practically defined by the shape of the polarization curve for hydrogen evolution. It is shown that correct polarization curves, as well as the morphology of electrodeposited powders are sensitive to the ratio of Ni2+/Co2+ ions concentration. Characteristic feature of powder particles obtained from chloride containing electrolytes is the presence of cone-shaped cavities. In the case of Ni powder cauliflower and spongy type particles are detected, while Co powder contains only spongy type particles. In all cases of alloy powder formation anomalous type of co-deposition is detected.
Keywords:
Alloy powder composition / Anomalous co-deposition / Co / Hydrogen evolution / Morphology / NH4Cl supporting electrolyte / Ni / Ni-Co alloy powders / Polarization curvesSource:
Electrochimica Acta, 2007, 52, 12, 4254-4263Publisher:
- Elsevier
Funding / projects:
DOI: 10.1016/j.electacta.2006.12.003
ISSN: 0013-4686; 1873-3859
WoS: 000245365900045
Scopus: 2-s2.0-33847395310
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Institution/Community
IHTMTY - JOUR AU - Jović, Vladimir D. AU - Jović, Borka M. AU - Maksimović, Vesna M. AU - Pavlović, Miomir G. PY - 2007 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/4273 AB - Polarization characteristics of the processes of Ni and Co powders and Ni-Co alloy powders electrodeposition from ammonium chloride containing supporting electrolyte and their morphologies are investigated as a function of Ni2+ and Co2+ ions concentrations. It is found that the shape of the polarization curves in all cases is practically defined by the shape of the polarization curve for hydrogen evolution. It is shown that correct polarization curves, as well as the morphology of electrodeposited powders are sensitive to the ratio of Ni2+/Co2+ ions concentration. Characteristic feature of powder particles obtained from chloride containing electrolytes is the presence of cone-shaped cavities. In the case of Ni powder cauliflower and spongy type particles are detected, while Co powder contains only spongy type particles. In all cases of alloy powder formation anomalous type of co-deposition is detected. PB - Elsevier T2 - Electrochimica Acta T1 - Electrodeposition and morphology of Ni, Co and Ni–Co alloy powders Part II. Ammonium chloride supporting electrolyte VL - 52 IS - 12 SP - 4254 EP - 4263 DO - 10.1016/j.electacta.2006.12.003 ER -
@article{ author = "Jović, Vladimir D. and Jović, Borka M. and Maksimović, Vesna M. and Pavlović, Miomir G.", year = "2007", abstract = "Polarization characteristics of the processes of Ni and Co powders and Ni-Co alloy powders electrodeposition from ammonium chloride containing supporting electrolyte and their morphologies are investigated as a function of Ni2+ and Co2+ ions concentrations. It is found that the shape of the polarization curves in all cases is practically defined by the shape of the polarization curve for hydrogen evolution. It is shown that correct polarization curves, as well as the morphology of electrodeposited powders are sensitive to the ratio of Ni2+/Co2+ ions concentration. Characteristic feature of powder particles obtained from chloride containing electrolytes is the presence of cone-shaped cavities. In the case of Ni powder cauliflower and spongy type particles are detected, while Co powder contains only spongy type particles. In all cases of alloy powder formation anomalous type of co-deposition is detected.", publisher = "Elsevier", journal = "Electrochimica Acta", title = "Electrodeposition and morphology of Ni, Co and Ni–Co alloy powders Part II. Ammonium chloride supporting electrolyte", volume = "52", number = "12", pages = "4254-4263", doi = "10.1016/j.electacta.2006.12.003" }
Jović, V. D., Jović, B. M., Maksimović, V. M.,& Pavlović, M. G.. (2007). Electrodeposition and morphology of Ni, Co and Ni–Co alloy powders Part II. Ammonium chloride supporting electrolyte. in Electrochimica Acta Elsevier., 52(12), 4254-4263. https://doi.org/10.1016/j.electacta.2006.12.003
Jović VD, Jović BM, Maksimović VM, Pavlović MG. Electrodeposition and morphology of Ni, Co and Ni–Co alloy powders Part II. Ammonium chloride supporting electrolyte. in Electrochimica Acta. 2007;52(12):4254-4263. doi:10.1016/j.electacta.2006.12.003 .
Jović, Vladimir D., Jović, Borka M., Maksimović, Vesna M., Pavlović, Miomir G., "Electrodeposition and morphology of Ni, Co and Ni–Co alloy powders Part II. Ammonium chloride supporting electrolyte" in Electrochimica Acta, 52, no. 12 (2007):4254-4263, https://doi.org/10.1016/j.electacta.2006.12.003 . .