Novel 3-D hierarchical multiconfiguration graphene/polyaniline-based aerogels with directed higher performances

IF 1.3 4区 医学 Q4 MATERIALS SCIENCE, BIOMATERIALS Cellular Polymers Pub Date : 2020-01-01 DOI:10.1177/0262489319885031
Rui Yao, J. Ju, Z. Yao
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引用次数: 1

Abstract

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.
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具有定向高性能的新型三维分级多结构石墨烯/聚苯胺基气凝胶
采用原位聚合和定向冷冻干燥法制备了新型的三维分层多构型石墨烯/聚苯胺气凝胶。复合气凝胶增强了优异的热学和电学性能,同时其三维分层多构型具有鲁棒性和稳定性,更有利于应用于热或电场。制备了氧化石墨烯/聚苯胺(GO/AP)和还原氧化石墨烯(RGO/AP)。通过扫描电镜图像可以明显观察到GO/AP气凝胶的多构型结构:气凝胶由具有平行开孔的骨架结构组成;骨架结构由带AP网络的分层氧化石墨烯片构成;AP网络由AP骨架和纳米孔组成。氧化石墨烯/AP气凝胶的耐热性高于单一AP气凝胶。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(垂直电导率为1.23 S cm−1,比电容为580 F g−1)。此外,由于复合气凝胶的多构型结构,复合气凝胶在孔洞延伸方向上表现出优异的性能。
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来源期刊
Cellular Polymers
Cellular Polymers 工程技术-材料科学:生物材料
CiteScore
3.10
自引率
0.00%
发文量
9
审稿时长
3 months
期刊介绍: Cellular Polymers is concerned primarily with the science of foamed materials, the technology and state of the art for processing and fabricating, the engineering techniques and principles of the machines used to produce them economically, and their applications in varied and wide ranging uses where they are making an increasingly valuable contribution. Potential problems for the industry are also covered, including fire performance of materials, CFC-replacement technology, recycling and environmental legislation. Reviews of technical and commercial advances in the manufacturing and application technologies are also included. Cellular Polymers covers these and other related topics and also pays particular attention to the ways in which the science and technology of cellular polymers is being developed throughout the world.
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