Title of article
Highly stable and effective Pt/carbon nitride (CNx) modified SiO2 electrocatalyst for oxygen reduction reaction
Author/Authors
Wang، نويسنده , , Rongfang and Li، نويسنده , , Xusheng and Li، نويسنده , , Hao and Wang، نويسنده , , Qunfang and Wang، نويسنده , , Hui and Wang، نويسنده , , Wei and Kang، نويسنده , , Jian and Chang، نويسنده , , Yanming and Lei، نويسنده , , Ziqiang، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2011
Pages
7
From page
5775
To page
5781
Abstract
We report a durable and active electrocatalyst, Pt/carbon nitride (CNx) modified silicon dioxide (SiO2) composite (donated as CNx/SiO2), for oxygen reduction reaction (ORR). CNx/SiO2 composite is synthesized by calcination of polypyrrole coated SiO2 (Ppy/SiO2) at 800 °C. The structure and composition are assessed using Fourier transform infra-red spectroscopy, X-ray diffraction, transmission electron microscope and energy dispersive spectroscopy. Voltammetry is used to study the activities of Pt immobilized on Vulcan XC-72R and CNx/SiO2, respectively. The electrochemical data indicate that Pt supported on CNx/SiO2 possesses higher electrocatalytic activity and durability for ORR compared with those of Vulcan XC-72R. All these demonstrate that CNx/SiO2 is a promising ORR electrocatalyst support for low temperature fuel cells.
Keywords
Silicon dioxide , Nitrogen-doped carbon , Electrocatalyst , Oxygen reduction reaction
Journal title
International Journal of Hydrogen Energy
Serial Year
2011
Journal title
International Journal of Hydrogen Energy
Record number
1665519
Link To Document