Novel three-dimensional (3-D) hierarchical multiconfiguration graphene/polyaniline-based aerogels were synthesized via in situ polymerization and directed freeze-drying method. The composite aerogels enhanced excellent thermal and electrical performances, at the same time, their 3-D hierarchical multiconfiguration was robust and stable, which made them more beneficial to be applied to thermal or electrical fields. Graphene oxide/polyaniline (GO/AP) and reduced graphene oxide (RGO/AP) were prepared. The multiconfiguration structure can be apparently observed through scanning electron microscopy image of GO/AP aerogel: the aerogels were composed of skeleton structure with paralleled open holes; the skeleton structure was made up by hierarchical GO sheet with AP network; and the AP network consisted of AP skeleton and nanopores. GO/AP aerogels showed higher heat resistance than single AP aerogel. In addition, compared with GO/AP and AP aerogels, RGO/AP aerogel had the best electrical performances (vertical electrical conductivity: 1.23 S cm−1 and specific capacitance: 580 F g−1). What is more, attributed to the multiconfiguration structure, the composite aerogels exhibited excellent performances in holes extending direction.

中文翻译：

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具有定向更高性能的新型 3-D 分层多配置石墨烯/聚苯胺基气凝胶

通过原位聚合和定向冷冻干燥方法合成了新型三维 (3-D) 分层多构型石墨烯/聚苯胺基气凝胶。复合气凝胶增强了优异的热学和电学性能，同时其 3-D 分层多构型稳健且稳定，这使得它们更有利于应用于热或电场领域。制备了氧化石墨烯/聚苯胺（GO/AP）和还原氧化石墨烯（RGO/AP）。通过GO/AP气凝胶的扫描电镜图像可以明显观察到多构型结构：气凝胶由平行开孔的骨架结构组成；骨架结构由带有AP网络的分层GO表组成；AP网络由AP骨架和纳米孔组成。GO/AP 气凝胶显示出比单一 AP 气凝胶更高的耐热性。此外，与 GO/AP 和 AP 气凝胶相比，RGO/AP 气凝胶具有最佳的电性能（垂直电导率：1.23 S cm-1 和比电容：580 F g-1）。更重要的是，由于多构型结构，复合气凝胶在孔延伸方向上表现出优异的性能。