شماره ركورد كنفرانس :
3256
عنوان مقاله :
Study of Graphite addition on electrochemical activity of platinum on zinc oxide electrocatalyst for oxygen reduction reaction in PEM fuel cell
Author/Authors :
Rasol Abdullah Mirzaie Fuel cell Research Laboratory - Dep. Of chemistry - Faculty of science - Shahid Rajaee Teacher Training University , Mohammad safi Rahmanifar Fuel cell Research Laboratory - Dep. Of chemistry - Faculty of science - Shahid Rajaee Teacher Training University , Fatemeh Hamedi Fuel cell Research Laboratory - Dep. Of chemistry - Faculty of science - Shahid Rajaee Teacher Training University
كليدواژه :
Oxygen reduction reaction , fuel cell , gas diffusion electrode , electrocatalysts , platinum on zinc oxide , non-carbon substrate
عنوان كنفرانس :
ششمين سمينار پيل سوختي ايران
چكيده لاتين :
A fuel cell is an electrochemical device for production of energy from fuel and oxidant.Platinum is the most commonly used catalyst for PEMFC. Catalysts in PEMFC are commonly supported on conductive and porous materials. Carbon is common support for platinum electrocatalyst. Using other materials as supports is attracted researchers for preparing effective electrocatalysts. The preparation of a Pt /zno electrocatalyst for the oxygen reduction reaction in PEM fuel cells was studied in this work. For preparation of electrocatalysts combined process of impregnation and seeding methods were used. The effect of adding Graphite to electrocatalyst and the electrode performance for oxygen reduction reaction was evaluated by three electrode systems. The linear sweep voltammetry (LSV), cyclic voltammetry and impedance Spectroscopy was used for kinetic study of
oxygen reduction reaction. Our results show the nano ZnO can be used as a substrate for preparation of platinum electrocatalyst. Also, adding Graphite to the reaction layer improve the electrode performance for oxygen reduction reaction. The optimized concentration of Graphite in the reaction layer is 50%
