Tingli MaProfessor, Dalian University of Technology
Dr Ma is a professor of Dalian University of Technology in Dalian, China. She leads research teams studying dye-sensitized solar cells (DSSC) and perovskite solar cells among other related projects including development of solar catalysts, solar-powered hydrogen production, functional dyes and nanosemiconductor materials. Professor Ma spent 15 years researching new concept solar cell and photocatalyst in Japan and abroad. Professor Ma is also a council member of the following organizations: Japan Society for Chemistry: China Microfabrication Technology Council, China Instrument Society of Instrumentation, China Energy Society, China Solar Energy, and so on.
Title：Catalytic Activities of N-doped Graphene in Polymer Fuel Cells
SymposiumFuel Cells
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Abstract
The carbon-based material graphene (GN) has attracted significant attention because of its high surface area, superior electrical conductivity, excellent thermal stability, and exceptional mechanical properties. Heteroatom-doped graphene materials, especially N-doped graphene (NG) materials, can tail their electronic property and chemical reactivity to increase their efficiency for ORR. However, the catalytic activity of NG is lower than that of commercial Pt/C in alkaline and acidic media.
In this study, NG samples were obtained using urea as the source. The structural defects and N distribution on the samples were adjusted by regulating the pyrolysis temperature. The new type of NG exhibited similar catalytic activities to commercial Pt/C for ORR in both alkaline and acidic media.
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