Effect of silica morphology on the structure of hard-templated, non-precious metal catalysts for oxygen reduction
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- 作者：Jacob Anibala ; Henry G. Romerob ; Nathaniel D. Leonarda ; 1 ; Cenk Gumecia ; 2 ; Barr Halevib ; Scott Calabrese Bartona ; scb@msu.edu" class="auth_mail" title="E-mail the corresponding author
- 关键词：Fuel cells ; Oxygen reduction reaction ; Non-precious catalysts ; Pore size distribution ; Membrane-electrode assembly
- 刊名：Applied Catalysis B: Environmental
- 出版年：2016
- 出版时间：5 December 2016
- 年：2016
- 卷：198
- 期：Complete
- 页码：32-37
- 全文大小：2553 K
文摘
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The Pore diameter of carbon materials templated by silica particles is approximately half that of particle diameter.
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Simple geometric models explain this ∼2:1 size ratio.
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A pore diameter optimum of ∼9 nm is found for oxygen reduction observed in membrane-electrode assemblies. This pore diameter corresponds to a particle diameter of ∼20 nm.