Manzhos Roman A, Baskakov Sergey A, Kabachkov Evgeny N, Korepanov Vitaly I, Dremova Nadezhda N, Baskakova Yulia V, Krivenko Alexander G, Shulga Yury M, Gutsev Gennady L
Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Russia.
Chernogolovka Scientific Center, Russian Academy of Sciences, 142432 Chernogolovka, Russia.
Materials (Basel). 2021 Jan 9;14(2):322. doi: 10.3390/ma14020322.
A graphene oxide aerogel (GOA) was formed inside a melamine sponge (MS) framework. After reduction with hydrazine at 60 °C, the electrical conductive nitrogen-enriched rGOA-MS composite material with a specific density of 20.1 mg/cm was used to fabricate an electrode, which proved to be a promising electrocatalyst for the oxygen reduction reaction. The rGOA-MS composite material was characterized by elemental analysis, scanning electron microscopy, X-ray photoelectron spectroscopy, and Raman spectroscopy. It was found that nitrogen in the material is presented by different types with the maximum concentration of pyrrole-like nitrogen. By using Raman scattering it was established that the rGOA component of the material is graphene-like carbon with an average size of the sp-domains of 5.7 nm. This explains a quite high conductivity of the composite obtained.
在三聚氰胺海绵（MS）框架内形成了氧化石墨烯气凝胶（GOA）。在60℃下用肼还原后，使用具有20.1mg/cm比密度的导电富氮rGOA-MS复合材料制造电极，该电极被证明是一种有前途的氧还原反应电催化剂。通过元素分析、扫描电子显微镜、X射线光电子能谱和拉曼光谱对rGOA-MS复合材料进行了表征。发现材料中的氮以不同类型存在，吡咯类氮的浓度最高。通过拉曼散射确定，材料的rGOA组分是类石墨烯碳，其sp域的平均尺寸为5.7nm。这解释了所得复合材料具有相当高的导电性。
