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Full-Text Articles in Social and Behavioral Sciences
Electrocatalytic Reduction Of Carbon Dioxide By Cobalt-Phthalocyanine-Incorporated Polypyrrole, Jun Chen, Gordon G. Wallace, Jiaxing Lu, Aijian Zhang, Weimin Zhang
Electrocatalytic Reduction Of Carbon Dioxide By Cobalt-Phthalocyanine-Incorporated Polypyrrole, Jun Chen, Gordon G. Wallace, Jiaxing Lu, Aijian Zhang, Weimin Zhang
Gordon Wallace
In the quest for catalysts for the electrocatalytic reduction of , a cobalt phthalocyanine/polypyrrole (CoPc/PPy) composite electrode has been developed. The electrode is prepared by drop casting CoPc onto the PPy film from the CoPc/tetrahydrofuran solution (1 mg/mL). The onset potential for reduction occurred at potentials 160 mV more positive than observed with a simple PPy electrode. Furthermore, in the potentiostatic electrolysis, the catalytic current for reduction at CoPc/PPy was very stable, with a higher current density and current efficiency when compared to the PPy electrode.
Travelling In Cuba, Fathi Habashi
Travelling In Cuba, Fathi Habashi
Fathi Habashi
Contact with Cuban scientists was established in 1986 when two researchers from Centro de Investigaciones para Industria Minero Metalurgica in Havana visited Laval University to get acquainted with research activities in the area of extractive metallurgy. This was followed in early 1987 by two more researchers from the same centre. Invitations were then received in late 1987, 1989, and 2008 to visit the nickel refineries in Cuba and to hold seminars at the University of Havana. The present report outlines these activities.
Enhanced Rate Performance Of Cobalt Oxide/Nitrogen Doped Graphene Composite For Lithium Ion Batteries, Dan Li, Dongqi Shi, Zhixin Chen, Hua-Kun Liu, Dianzeng Jia, Zaiping Guo
Enhanced Rate Performance Of Cobalt Oxide/Nitrogen Doped Graphene Composite For Lithium Ion Batteries, Dan Li, Dongqi Shi, Zhixin Chen, Hua-Kun Liu, Dianzeng Jia, Zaiping Guo
Faculty of Engineering and Information Sciences - Papers: Part A
Ultrafine Co3O4 nanocrystals homogeneously attached to nitrogen doped reduced graphene oxide (rGO) by the hydrothermal reaction method are demonstrated as anode materials for lithium ion batteries. Transmission electron microscope images revealed that the crystal size of Co3O4 in Co3O4/N-rGO and Co3O4/rGO is 5-10 nm, much smaller than that of bare Co3O4, indicating that the reduced graphene oxide sheets with Co3O4 nanocrystals attached could hinder the growth and aggregation of Co3O4 crystals during synthesis. The graphene sheets can also effectively buffer the volume change of Co3O4 upon lithium insertion/extraction, thus improving the cycling performance of the composite electrodes. The doped nitrogen …