一种用于氧还原的无热解共价有机聚合物。
A Pyrolysis-Free Covalent Organic Polymer for Oxygen Reduction.
作者信息
Guo Jianing, Lin Chun-Yu, Xia Zhenhai, Xiang Zhonghua
机构信息
Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, College of Energy, Beijing University of Chemical Technology, Beijing, 100029, P. R. China.
Department of Materials Science and Engineering, Department of Chemistry, University of North Texas, Denton, TX, 76203, USA.
出版信息
Angew Chem Int Ed Engl. 2018 Sep 17;57(38):12567-12572. doi: 10.1002/anie.201808226. Epub 2018 Aug 21.
Highly efficient electrocatalysts derived from metal-organic frameworks (MOFs) and covalent organic frameworks (COFs) for oxygen reduction reaction (ORR) have been developed. However, the subsequent pyrolysis is often needed owing to their poor intrinsic electrical conductivity, leading to undesirable structure changes and destruction of the original fine structure. Now, hybrid electrocatalysts were formed by self-assembling pristine covalent organic polymer (COP) with reduced graphene oxide (rGO). The electrical conductivity of the hybridized COP/rGO materials is increased by more than seven orders of magnitude (from 3.06×10 to 2.56×10 S m ) compared with pure COPs. The ORR activities of the hybrid are enhanced significantly by the synergetic effect between highly active COP and highly conductive rGO. This COP/rGO hybrid catalyst exhibited a remarkable positive half-wave (150 mV).
已经开发出了源自金属有机框架（MOF）和共价有机框架（COF）的用于氧还原反应（ORR）的高效电催化剂。然而，由于其固有的低电导率，随后通常需要进行热解，这会导致不理想的结构变化并破坏原始的精细结构。现在，通过将原始共价有机聚合物（COP）与还原氧化石墨烯（rGO）自组装形成了混合电催化剂。与纯COP相比，杂交后的COP/rGO材料的电导率提高了七个多数量级（从3.06×10到2.56×10 S m）。高度活性的COP和高导电性的rGO之间的协同效应显著增强了该混合物的ORR活性。这种COP/rGO混合催化剂表现出显著的正半波（150 mV）。
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