Porous nitrogen doped carbon foam with excellent resilience for self-supported oxygen reduction catalyst

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• 作者：Hua Zhang^a ; ¹ ; Yan Zhou^b ; ¹ ; Chungen Li^a ; Shuiliang Chen^a ; ^b ; ^{slchenjxnu@jxnu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Lang Liu^a ; Shuwu Liu^a ; Haimin Yao^b ; ^{haimin.yao@polyu.edu.hk" class="auth_mail" title="E-mail the corresponding author} ; Haoqing Hou^a
• 关键词：Nitrogen-doped carbon foam ; Oxygen reduction reaction ; Catalyst ; Graphitized carbon ; Resilience
• 刊名：Carbon
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：95
• 期：Complete
• 页码：388-395
• 全文大小：2529 K

文摘

Fabrication of graphitized carbon materials (e.g. carbon nanotubes and graphene) normally entails the assistance of transition metal catalyst. In this paper, a nitrogen doped carbon foam (NCF) with both graphitized and porous carbon structure was fabricated by direct pyrolysis of melamine foam (MF) without using any transition metal catalyst. The graphitized carbon structure was possibly attributed to the triazine moieties in the MF precursor. The introduction of oxygen groups in the oxidation step resulted in the formation of large amount of micro- and mesopores and therefore high specific surface area. The NCF exhibited a three-dimensional cellular network consisting of carbon microfiber with abundant micro- and mesopores and giving rise to a specific surface area over 980 m² g⁻¹. Due to such graphitized porous structure, the NCF was demonstrated to have superior resilience, excellent electrocatalytic activity and good durability for oxygen reduction.