A new strategy for designing the morphology and the chemical/physical properties of carbon structures is developed by functionalization of porous carbon templates. In a thermal decomposition procedure self-prepared multilayer-graphene foams (GF) are coated with a nitrogen-containing carbon layer (NCL) which has a porous structure. The use of a nitrogen rich ionic liquid as precursor generates a NCL with a very high nitrogen level of 35.3 wt%. To the best of our knowledge, this is the first synthesis of a hierarchical structured N-GF with such a high nitrogen amount. Structural studies on the NCL confirm C₅N and C₃N₄ species. Compared to uncoated GF it could be demonstrated that the functionalized porous carbon template (N-GF) has an increased electronic conductivity and electrochemical stability. Electrochemical characterizations of polymer electrolyte membrane fuel cells (PEMFC) prepared with Pt catalysts supported on N-GF show an increased performance which is attributed to improved mass transport properties and higher electronic conductivity of the porous composite material. Morphological, structural, chemical, and electrochemical characterizations were performed.

中文翻译：

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多层石墨烯泡沫化学和形态功能化的涂覆程序

通过多孔碳模板的功能化，开发了一种用于设计碳结构的形态和化学/物理性质的新策略。在热分解步骤中，自备的多层石墨烯泡沫（GF）涂有具有多孔结构的含氮碳层（NCL）。使用富氮离子液体作为前体会产生NCL，其氮含量非常高，为35.3 wt％。据我们所知，这是具有如此高氮含量的分层结构化N-GF的首次合成。NCL的结构研究证实了C ₅ N和C ₃ N ₄物种。与未涂覆的GF相比，可以证明官能化的多孔碳模板（N-GF）具有更高的电子电导率和电化学稳定性。用负载在N-GF上的Pt催化剂制备的聚合物电解质膜燃料电池（PEMFC）的电化学表征显示出提高的性能，这归因于多孔复合材料的改进的传质性能和更高的电导率。进行了形态，结构，化学和电化学表征。