News Column

New Electrolytes Study Findings Recently Were Reported by Researchers at Korea Advanced Institute of Science and Technology (KAIST) (A Simple...

August 8, 2014



New Electrolytes Study Findings Recently Were Reported by Researchers at Korea Advanced Institute of Science and Technology (KAIST) (A Simple Diazonium Coupling Reaction Enhances Durability of Modified Graphitic Carbons Used as Catalyst ...)

By a News Reporter-Staff News Editor at Energy Weekly News -- A new study on Electrolytes is now available. According to news reporting out of Taejon, South Korea, by VerticalNews editors, research stated, "We present the functionalization of graphitized carbons via simple diazonium reaction as a method for preparation of highly durable Pt catalyst supports for polymer electrolyte membrane fuel cells (PEMFCs). The functionalization of the graphitized carbon supports with the trifluoromethylphenyl groups via diazonium coupling reaction was shown to improve the dispersion of Pt nanoparticles and to reduce the Pt sintering phenomena, resulting in high stability and activity of the Pt/functionalized carbon."

Our news journalists obtained a quote from the research from the Korea Advanced Institute of Science and Technology (KAIST), "This approach also holds a potential for enhancing the dispersion of Pt nanoparticles on the surfaces of graphitized carbons without any deterioration of their intrinsic properties. Electrochemical analysis demonstrates that the Pt/functionalized carbon show improved electrochemical durability than the Pt/graphitized carbon and commercial Pt/C catalyst. The functionalized surfaces of the graphitized carbons not only increases the resistance against carbon corrosion but also offers better attachment of Pt nanoparticles to the carbon surfaces, resulting in the improved durability of the Pt/functionalized carbon."

According to the news editors, the research concluded: "This study shows that this simple functionalization of graphitized carbons by the in situ grafting of functional groups onto their surfaces is an effective way to fabricate highly durable catalysts for PEMFCs, thereby providing a design guide of the functionalized carbon supports catalysts with a great potential as PEMFC catalysts."

For more information on this research see: A Simple Diazonium Coupling Reaction Enhances Durability of Modified Graphitic Carbons Used as Catalyst Supports for Polymer Electrolyte Membrane Fuel Cell. Electrochimica Acta, 2014;134():418-425. Electrochimica Acta can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England.

Our news journalists report that additional information may be obtained by contacting J.Y. Kim, Korea Adv Inst Sci & Technol, Dept. of Biomol & Chem Engn, Taejon 305701, South Korea. Additional authors for this research include S. Lee, T.Y. Kim and H.T. Kim.

Keywords for this news article include: Asia, Taejon, Energy, Chemistry, Fuel Cell, Oil & Gas, South Korea, Electrolytes, Nanoparticle, Nanotechnology, Electrochemical, Inorganic Chemicals, Emerging Technologies

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


For more stories covering the world of technology, please see HispanicBusiness' Tech Channel



Source: Energy Weekly News


Story Tools






HispanicBusiness.com Facebook Linkedin Twitter RSS Feed Email Alerts & Newsletters