High Surface Area, sp2-Cross-Linked Three-Dimensional Graphene Monoliths
High Surface Area, sp2-Cross-Linked Three-Dimensional Graphene Monoliths
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DOI：
10.1021/jz200223x
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发表时间：
2011-04-21
影响因子：
5.7
通讯作者：
Baumann, Theodore F.
中科院分区：
文献类型：
--
作者：
Worsley, Marcus A.;Olson, Tammy Y.;Baumann, Theodore F.
开发具有类似于这些单独石墨烯片的性质的三维（3D）石墨烯组装体是石墨烯基电极的有前途的策略。通常，3D石墨烯组件的合成依赖于用于将石墨烯片保持在一起的货车范德华力，导致不反映针对单个石墨烯片报道的那些的本体性质。在这里，我们报告了使用溶胶-凝胶化学引入石墨烯片之间的化学键合和控制石墨烯基气凝胶的本体性质。调整合成参数允许对表面积、孔体积和孔径以及化学交联的性质（sp（2）vs sp（3））进行广泛的控制。石墨烯基气凝胶的本体性质代表了朝着实现3D组装中的单个石墨烯片的性质迈出的重要一步，其中表面积接近单个片的理论值。
Developing three-dimensional (3D) graphene assemblies with properties similar to these individual graphene sheets is a promising strategy for graphene-based electrodes. Typically, the synthesis of 3D graphene assemblies relies on van der Waals forces for holding the grapheme sheets together, resulting in bulk properties that do not reflect those reported for individual graphene sheets. Here, we report the use of sol gel chemistry to introduce chemical bonding between the graphene sheets and control the bulk properties of graphene-based aerogels. Adjusting synthetic parameters allows a wide range of control over surface area, pore volume, and pore size, as well as the nature of the chemical cross-links (sp(2) vs sp(3)). The bulk properties of the graphene-based aerogels represent a significant step toward realizing the propeities of individual graphene sheets in a 3D assembly with surface areas approaching the theoretical value of an individual sheet.