A detailed view on the polycondensation of ionic liquid monomers towards nitrogen doped carbon materials
A detailed view on the polycondensation of ionic liquid monomers towards nitrogen doped carbon materials
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DOI：
10.1039/c0jm00869a
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发表时间：
2010-01-01
影响因子：
--
通讯作者：
Antonietti, Markus
中科院分区：
文献类型：
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作者：
Paraknowitsch, Jens Peter;Thomas, Arne;Antonietti, Markus
近年来的研究表明，特殊离子液体作为氮掺杂碳材料的新型前驱体具有很大的潜力。液态和可忽略的蒸气压的组合代表了几乎理想的前体性质，与固态特别是气相离析物相比大大简化了加工。在这里，我们描述了离子液体需要满足特定的结构要求，为此目的：而阳离子必须是含氮的，e。G.吡啶或咪唑，阴离子中的反应性氰基官能团是非常有益的，例如在二氰胺或三氰基甲基阴离子中。这些前体在惰性气体气氛中的热处理导致形成氮掺杂的碳材料，其具有约10 m%的氮含量、乱层结构和非常有利的电学和电化学性质。本文将对最终材料的形成机理、结构决定和应用前景进行深入探讨。
Recent works have shown the potential of special ionic liquids as a new type of precursor for nitrogen doped carbon materials. The combination of liquid state and negligible vapour pressure represents almost ideal precursor properties, simplifying the processing drastically as compared to solid and especially gas phase educts. Here, we delineate that the ionic liquids need to fulfil certain structural requirements for this purpose: while the cation must be nitrogen containing, e. g. pyridinium or imidazolium, reactive cyano functionalities in the anion are highly beneficial, such as in dicyanamide or tricyanomethide anions. Thermolysis of these precursors in an inert gas atmosphere leads to the formation of nitrogen doped carbon materials with a nitrogen content of about 10 m%, a turbostratic structure and very favourable electric and electrochemical properties. This paper will give an insight into the formation mechanism, structure determination and perspectives on applications of the final material.