News Column

Reports Outline Sulfur Amino Acids Findings from University of Utah (Nickel Cysteine Complexes as Anodic Electrocatalysts for Fuel Cells)

September 9, 2014

By a News Reporter-Staff News Editor at Life Science Weekly -- Fresh data on Sulfur Amino Acids are presented in a new report. According to news reporting out of Salt Lake City, Utah, by NewsRx editors, research stated, "Compared to platinum, nickel is an inexpensive catalyst that can oxidize methanol in alkaline media. There is a desire to increase nickel loading during electrodeposition for improved performance."

Our news journalists obtained a quote from the research from the University of Utah, "In this paper, a nickel cysteine complex (NiCys) is used as the precursor for electrodeposition on glassy carbon electrode surfaces. After optimization of cysteine concentration, the surface concentration of NiOOH on NiCys electrodes characterized by cyclic voltammetry in 0.1 M NaOH can reach 1.28 (+/- 0.32) x 10(-7) mol/cm(2). The large amount of NiOOH on NiCys electrodes provide 5 times the methanol oxidation current compared to Ni electrodes prepared without cysteine as demonstrated by chronoamperometry at 0.7 V vs. Hg/HgO. Atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS) and attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy have been applied to examine surface morphologies and structures of NiCys and Ni electrodes."

According to the news editors, the research concluded: "The analysis reveals that cysteine adjusts the solubility of Ni(OH)(2) in 0.1 M NaOH, so more uniform and smaller size nanoparticles are electrodeposited on electrode surfaces compared to Ni electrodes."

For more information on this research see: Nickel Cysteine Complexes as Anodic Electrocatalysts for Fuel Cells. Journal of the Electrochemical Society, 2014;161(9):F933-F939. Journal of the Electrochemical Society can be contacted at: Electrochemical Soc Inc, 65 South Main Street, Pennington, NJ 08534, USA. (The Electrochemical Society -; Journal of the Electrochemical Society -

Our news journalists report that additional information may be obtained by contacting D.Y. Chen, University of Utah, Dept. of Mat Sci & Engn, Salt Lake City, UT 84112, United States. Additional authors for this research include F. Giroud and S.D. Minteer (see also Sulfur Amino Acids).

Keywords for this news article include: Salt Lake City, Utah, United States, North and Central America, Cysteine, Neutral Amino Acids, Nickel, Sulfhydryl Compounds, Sulfur Amino Acids, Transition Elements

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Source: Life Science Weekly

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