Graphitic mesoporous carbon as a support for Pt, Pt-M, and Pd electrocatalysts to achieve stable oxygen reduction catalysts

Daniel A. Slanac, N. Li, Keith J. Stevenson, Keith P. Johnston

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A variety of pure metal and metal alloy catalysts were synthesized for ORR by an arrested growth precipitation method, including Pt, PtPd, PtCu, and Pd nanoparticles with controlled sized (ranging from 3 to 6 nm) and composition. They were then infused onto mesoporous graphitic carbon (ordered and disordered) treated at various graphitization temperatures. The activities of the catalysts were determined by rotating disk measurements at 0.9 v, where the catalysts are in the kinetically controlled regime. Monometallic and bimetallic catalysts for ORR were stable for 1000 cycles from 0.5 to 1.2 v. The corrosion resistant graphitic supports underwent little oxidation, and the morphology of the supported metals was stable. The strong metal interaction with the π electron support sites further contributed to the stability. The combination of high activities and high stabilities for these metals with highly controlled shapes and composition on graphitic carbon is of high practical importance for fuel cell applications. This is an abstract of a paper presented at the AIChE 2010 Spring National Meeting (San Antonio, TX 3/21-25/2010).

Original languageEnglish
Title of host publication10AIChE - 2010 AIChE Spring Meeting and 6th Global Congress on Process Safety
Publication statusPublished - 2010
Externally publishedYes
Event2010 AIChE Spring Meeting and 6th Global Congress on Process Safety, 10AIChE - San Antonio, TX, United States
Duration: 21 Mar 201025 Mar 2010

Publication series

Name10AIChE - 2010 AIChE Spring Meeting and 6th Global Congress on Process Safety

Conference

Conference2010 AIChE Spring Meeting and 6th Global Congress on Process Safety, 10AIChE
Country/TerritoryUnited States
CitySan Antonio, TX
Period21/03/1025/03/10

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