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Modification of paste-type nickel cathodes for application in alkaline cells

Młynarek G., Ważny A., Turowski T., Skowroński J.M., Czerwiński A.

Polish Journal of Chemical Technology

2004

Vol. 6, nr 2

35-38

The studies were focused on paste-type nickel cathodes produced with foam nickel as a carrier. The influence of the following additives on the electrochemical behavior of the paste-type cathodes was analyzed: cobalt powder, cobalt oxide, barium hydroxide and calcium hydroxide.

Admixturing of waste nickel hydroxide to ceramical building materials

Osińska M., Stefanowicz T.

Polish Journal of Applied Chemistry

2001

Vol. 45, nr 3-4

109-116

Clay destined for bricks production was admixtured with 1, 2, 3 and 10% (d.s.) of nickel hydroxide (the often electroplating sludge component). The burnt-out ceramic brick samples were examined for physical and mechanical properties and for nickel leaching. Samples admixtured within the range of 1-3% did not differ by physical and mechanical properties, while those admixtured with 10% of Ni(OH)2 (non-washed of salts) lost approx. 50% of their initial compressive strength. Nickel concentrations in leachates at water-to-ceramics ratio 10:1 with ceramics admixtured with 10% of Ni(OH)2 (at leaching time 48 h) were below the permissible level. Nickel hydroxide stabilization in ceramics within 1-10% admixtures is considered to be effective and in line with law requirements.