Efficient coupling of nanoparticles to electrochemically exfoliated graphene.
Efficient coupling of nanoparticles to electrochemically exfoliated graphene.
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DOI：
10.1021/jacs.5b02284
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发表时间：
2015-04
影响因子：
15
通讯作者：
Wei Wei-Wei;Gang Wang;Sheng Yang;Xinliang Feng;K. Müllen
中科院分区：
文献类型：
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作者：
Wei Wei-Wei;Gang Wang;Sheng Yang;Xinliang Feng;K. Müllen
电化学剥离石墨烯（EEG）是新一代高质量石墨烯，在构建杂化材料方面具有巨大的潜力。然而，组装脑电图混合明确的纳米结构仍然是一个重大挑战。在这项研究中，我们展示了一个自下而上的方法组装的EEG片与一系列的功能纳米粒子（Si，Fe 3 O 4，和Pt纳米粒子）到二维的混合纳米结构。聚苯胺在翠绿亚胺碱形式的功能作为一个多功能的掺杂剂耦合到EEG通过静电相互作用或氢键的NP。该协议使得能够使用经济的途径处理和组装EEG，为此，我们进一步证明了EEG-Si混合物作为锂存储的高性能阳极材料的潜在应用。
Electrochemically exfoliated graphene (EEG) is a new generation of high-quality graphene that holds great promise for the construction of hybrid materials. However, the assembly of EEG hybrids with well-defined nanostructures has remained a major challenge. In this study, we demonstrate a bottom-up approach toward the assembly of EEG sheets with a series of functional nanoparticles (Si, Fe3O4, and Pt NPs) into two-dimensional sandwich-like hybrid nanostructures. Polyaniline in the emeraldine base form functions as a versatile dopant to couple NPs onto EEG through either electrostatic interactions or hydrogen bonding. This protocol enables processing and assembly of EEG using an economical pathway, for which we further demonstrate the potential application of EEG-Si hybrids as high-performance anode material for lithium storage.