Carbon Nanowalls for oxygen reduction reaction in Bio Fuel Cells

14th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Lehmann, K.^1,2 ; Yurchenko, O.^1,2 ; Urban, G.^2

Freiburg Materials Research Center, FMF, University of Freiburg, Germany^1

Department of Microsystems Engineering, IMTEK, University of Freiburg, Germany^2

关键词: Carbon nanowalls;    Carbon nanowalls (CNW);    Controllable morphology;    Electroactive compounds;    Electrode material;    Oxygen reduction reaction;    Platinum based catalyst;    Voltammetry measurements;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/557/1/012008/pdf
DOI  :  10.1088/1742-6596/557/1/012008

来源: IOP

【 摘 要 】

We report on the usage of Carbon Nanowalls (CNW) synthesized by a PECVD process as electrode material for oxygen reduction reaction (ORR). In order to substitute the platinum based catalysts in fuel cells, graphene is a promising candidate. Carbon Nanowalls are a graphene modification with good accessibility and a controllable morphology. By controlling height and pore size, they can be optimized for different applications. A ID/IGratio around 2.5 and the SEM images indicate vertical nanocrystallin graphene sheets. Tests with ferrocene as electroactive compound verify CNW suitability as electrode material. Cyclic voltammetry measurements in oxygen saturated PBS prove the catalytic activity of CNW towards ORR. The results support the feasibility of CNW as cathode in Bio Fuel Cells.