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Investigators from Yale University Target Chalcogens (LaNixCo1-xO3-delta Perovskites as Catalyst Material for Non-Aqueous Lithium-Oxygen Batteries)

August 26, 2014



By a News Reporter-Staff News Editor at Life Science Weekly -- New research on Chalcogens is the subject of a report. According to news originating from New Haven, Connecticut, by NewsRx correspondents, research stated, "The oxygen electrode is a vital element in developing lithium-oxygen batteries, because it provides the active sites for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). In addition, the performance of the oxygen electrode strongly depends on the activity and architecture of materials employed."

Our news journalists obtained a quote from the research from Yale University, "Perovskite oxide nanostructures of nickel-doped lanthanum cobaltite were prepared by a very simple and cost-effective solution combustion synthesis. The oxygen electrode containing a carbon-supported perovskite oxide catalyst with oxygen vacancies exhibited reduced polarization and improved discharge capacity compared with that containing only bare carbon without a catalyst. In particular, the LaNi0.25Co0.75O3-d catalyst showed the best catalytic activity for OER by achieving the oxidation of Li2O2 at 3.8 V. The widespread dispersion and mesoporous design of perovskite facilitates the diffusion of electrolyte and oxygen into the inner electrode to demonstrate cyclability for 49 cycles while maintaining a moderate specific capacity of 1000 mAh g(-1)."

According to the news editors, the research concluded: "Further, the synergistic effect of the fast kinetics of electron transport provided by the carbon support and the high electro-catalytic activity of the perovskite oxide resulted in excellent performance of the oxygen electrode for Li-O-2 batteries."

For more information on this research see: LaNixCo1-xO3-delta Perovskites as Catalyst Material for Non-Aqueous Lithium-Oxygen Batteries. Journal of the Electrochemical Society, 2014;161(6):A880-A889. Journal of the Electrochemical Society can be contacted at: Electrochemical Soc Inc, 65 South Main Street, Pennington, NJ 08534, USA. (The Electrochemical Society - ecsdl.org/; Journal of the Electrochemical Society - www.ecsdl.org/JES)

The news correspondents report that additional information may be obtained from R.S. Kalubarme, Yale University, Dept. of Chem & Environm Engn, New Haven, CT 06520, United States. Additional authors for this research include G.E. Park, K.N. Jung, K.H. Shin, W.H. Ryu and C.J. Park (see also Chalcogens).

Keywords for this news article include: New Haven, Chalcogens, Connecticut, United States, 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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