Use of cellulose-based carbon aerogels as catalyst support for PEM fuel cell electrodes: Electrochemical characterization

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• 作者：Elodie Guilminot ; Florent Fischer ; Marian Chatenet ; Arnaud Rigacci ; S ; rine Berthon-Fabry ; Patrick Achard ; Eric Chainet
• 关键词：Cellulose acetate ; Carbon aerogel ; Electrocatalyst support ; Platinum nanoparticles ; PEM fuel cell
• 刊名：Journal of Power Sources
• 出版年：2007
• 出版时间：30 March 2007
• 年：2007
• 卷：166
• 期：1
• 页码：104-111
• 全文大小：827 K

文摘

New nanostructured carbons have been developed through pyrolysis of organic aerogels, based on supercritical drying of cellulose acetate gels. These cellulose acetate-based carbon aerogels (CA) are activated by CO₂ at 800 °C and impregnated by PtCl₆²⁻; the platinum salt is then chemically or electrochemically reduced. The resulting platinized carbon aerogels (Pt/CA) are characterized with transmission electron microscopy (TEM) and electrochemistry. The active area of platinum is estimated from hydrogen adsorption/desorption or CO-stripping voltammetry: it is possible to deposit platinum nanoparticles onto the cellulose acetate-based carbon aerogel surface in significant proportions. The oxygen reduction reaction (ORR) kinetic parameters of the Pt/CA materials, determined from quasi-steady-state voltammetry, are comparable with that of Pt/Vulcan XC72R. These cellulose acetate-based carbon aerogels are thus promising electrocatalyst support for PEM application.