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Data on Chalcogens Described by Researchers at South Dakota School of Mines and Technology (Lignin-derived electrospun carbon nanofiber mats with...

July 8, 2014



Data on Chalcogens Described by Researchers at South Dakota School of Mines and Technology (Lignin-derived electrospun carbon nanofiber mats with supercritically deposited Ag nanoparticles for oxygen reduction reaction in alkaline fuel cells)

By a News Reporter-Staff News Editor at Life Science Weekly -- Investigators publish new report on Chalcogens. According to news reporting out of Rapid City, South Dakota, by NewsRx editors, research stated, "Ag nanoparticles (AgNPs) (11, 15, and 25 wt.%) were deposited on the surface of the freestanding and mechanically flexible mats consisting of lignin-derived electrospun carbon nanofibers (ECNFs) by the supercritical CO2 method followed by the thermal treated at 180 degrees C. The electrochemical activity of Ag/ECNFs electrocatalyst systems towards oxygen reduction reaction (ORR) was studied in 0.1 M KOH aqueous solution using the rotating disk/rotating ring disk electrode (RDE/RRDE) technique. The SEM, TEM, and XRD results indicated that, the spherical AgNPs were uniformly distributed on the ECNF surface with sizes in the range of 2-10 nm."

Our news journalists obtained a quote from the research from the South Dakota School of Mines and Technology, "The electrocatalytic results revealed that, all of the Ag/ECNFs systems exhibited high activity in ORR and demonstrated close-to-theoretical four-electron pathway. In particular, the mass activity of 15 wt.% Ag/ECNFs system was the highest (119 mA mg(-1)), exceeding that of HiSPEC 4100 commercial Pt/C catalyst (98 mA mg(-1))."

According to the news editors, the research concluded: "This study suggested that the lignin-derived ECNF mats surface-deposited with AgNPs would be promising as cost-effective and highly efficient electrocatalyst for ORR in alkaline fuel cells."

For more information on this research see: Lignin-derived electrospun carbon nanofiber mats with supercritically deposited Ag nanoparticles for oxygen reduction reaction in alkaline fuel cells. Electrochimica Acta, 2014;130():431-438. Electrochimica Acta can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England (see also Chalcogens).

Our news journalists report that additional information may be obtained by contacting C.L. Lai, South Dakota Sch Mines & Technol, Dept. of Chem & Appl Biol Sci, Rapid City, SD 57701, United States. Additional authors for this research include P. Kolla, Y. Zhao, H. Fong and A.L. Smirnova.

Keywords for this news article include: Rapid City, Chalcogens, South Dakota, Nanoparticle, United States, Nanotechnology, Emerging Technologies, North and Central America

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Life Science Weekly


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