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The effect of thermal treatments on the mechanical and electrical properties of nickel-coated carbon fibre composites

100%
Pierozynski B.
Polish Journal of Chemical Technology
|
2011
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vol. 13
|
issue 1
16-19
EN
Nickel-coated carbon fibre (NiCCF) composites may find technological applications within many industrial sectors, including: laptop computers, automotive and military industries. Typically, these applications require that NiCCF be subjected to extensive material processing; thus, optimization of mechanical (and electrical) properties for this material at the stage of its production is of significant importance. The present paper reports the application of specific, high-temperature heat treatments to laboratory-produced 12K50 NiCCF material, carried-out in order to improve the ductility and interfacial adhesion of electrodeposited Ni coating to the surface of carbon fibre substrate.
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Hydrogen evolution reaction at Ru-modified nickel-coated carbon fibre in 0.1 M NaOH

88%
Pierożyński B., Mikołajczyk T.
Polish Journal of Chemical Technology
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2015
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vol. 17
|
issue 1
18-22
EN
The electrochemical activity towards hydrogen evolution reaction (HER) was studied on commercially available (Toho-Tenax) and Ru-modified nickel-coated carbon fibre (NiCCF) materials. Quality and extent of Ru electrodeposition on NiCCF tows were examined by means of scanning electron microscopy (SEM). Kinetics of the hydrogen evolution reaction were investigated at room temperature, as well as over the temperature range: 20-50°C in 0.1 M NaOH solution for the cathodic overpotential range: -100 to -300 mV vs. RHE. Corresponding values of charge-transfer resistance, exchange current-density for the HER and other electrochemical parameters for the examined fibre tow composites were recorded.
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