Preparation and Electrochemical Properties of Pt/Mesoporous-C for Oxygen Reduction Reaction: Effect of Carbonation Temperature

Abstract:

The mesoporous carbon (MC) synthesized by a one-step method with tetraethyl ortho- silicate (TEOS) as silicon source, sucrose as carbon source and phosphoric acid as active agent, respectively, is used as the support to prepare Pt/MC electrocatalysts. The pore characteristics and the graphitic extend of MC can be adjusted by controlling the carbonation temperature (T_c). The maximum surface area of home-made MC is confirmed and analyzed by BET to be 860.20 m2 g^-1 with Tc = 900 °C, and the main pore size of MC is 8.70 nm. The maximum mass activity (MA) and specific activity (SA) of the oxygen reduction reaction (ORR) on Pt/MC (P/Si = 0.5, T_c = 900 °C) are experimentally found to be 15.54 A g^-1 and 18.05 mA cm^-2, respectively.

• Periodical: Advanced Materials Research (Volumes 306-307)
• Pages: 155-158
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.306-307.155
• Online since: August 2011
• Authors: Chia Ying Hsieh, Yi Shiuan Huang, Jing Shan Do
• Keywords: Mass Activity, Mesoporous Carbon, Oxygen Reduction Reaction, Pt/MC Electrocatalyst, Specific Activity

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