Advanced Graphene-Based Nanocomposites through Guided Interfacial Assembly

通过引导界面组装的先进石墨烯基纳米复合材料

• 批准号: RGPIN-2015-06600
• 负责人: Pope, Michael
• 金额: $ 1.82万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=680233
• 关键词: Advanced; Graphene; Based; Nanocomposites; through

Graphene is a one atom thick sheet of conductive carbon. For a given surface area, it is the lightest weight electronic conductor of any material and can be produced relatively inexpensively, and in large volume, from natural graphite - a resource for which Canada holds the only significant source in North America and the 5th largest supply globally. This leads to its potential use in a multitude of applications for improved energy storage, energy generation or even as an advanced membrane material for separations. Unfortunately, very few commercial technologies involving graphene-based materials have emerged, in large part due to the difficulty in processing these 2D sheets into useful, 3D materials with predicable structure and thus function.*** To address this challenge, this research program aims to develop new tools and processes to create a platform of graphene-based materials whose structure can be manipulated and fine-tuned at the nanoscale. This will be achieved by developing coating processes capable of depositing large-area monolayer graphene films onto a variety of substrates. These approaches will take advantage of the fact that graphene-based sheets can float on water supported by the same forces that allow a water spider to walk on water. Through the development of this coating approach, atomically thin sheets (of a large area) will be built up layer-by-layer to create fully dense multi-layer films. In order to introduce useful space between each layer, we will develop coating approaches to decorate graphene with molecular scale pillars of tunable size which will define the effective pore opening between sheets in the layer-by-layer composites. Depending on the engineered pore-size, these materials could exhibit properties ranging from completely blocking layers (i.e., zero porosity) for advanced packaging, to more energy efficient membranes for water purification, and finally with the ability to accommodate ions and active material coatings for advanced supercapacitors, batteries or electrocatalysts.*** This research program is also designed to foster and inspire highly qualified personnel through a combination of apprenticeship, mentorship and exposure to an exciting but rigorous research environment. Specific activities proposed throughout this research program will build a foundation for many eventual application areas which will translate to new products for Canadian companies or to completely new ventures. The use of graphene in high volume applications such as in Li-ion batteries, supercapacitors and large area membranes for separations are expected to stimulate Canada's graphite economy leading to new jobs and exports.**

石墨烯是一张原子厚的导电碳。对于给定的表面积，它是任何材料中最轻巧的电子导体，并且可以相对廉价地生产，并且在大量的情况下，从天然石墨中产生 - 加拿大拥有北美唯一的重要来源和全球第五大供应。这导致了其在众多应用中的潜在用途，以改善能源的产生，甚至是用于分离的高级膜材料。不幸的是，很少有涉及石墨烯基材料的商业技术已经出现，这在很大程度上是由于难以将这些2D纸处理成具有可预测结构并因此起作用的有用的3D材料。这将通过开发能够将大面积单层石墨烯膜沉积到各种底物上的涂层工艺来实现。这些方法将利用以下事实：基于石墨烯的床单可以漂浮在允许水蜘蛛在水上行走的力支撑的水上。通过开发这种涂层方法，（一个大面积）原子上的薄床单将逐层建立，以制作完全密集的多层膜。为了在每一层之间引入有用的空间，我们将开发使用可调尺寸的分子尺度柱装饰石墨烯的涂料方法，这将定义逐层复合材料中的板之间的有效孔口。根据工程孔径的不同，这些材料可以表现出从完全阻塞的层（即，用于高级包装的零孔隙率）到更节能的膜，最后具有可容纳离子和活跃的材料涂料的能力，用于高级超级能力，炮台或电力组合，并通过设计和电力效率来实现。学徒制，指导和暴露于令人兴奋但严格的研究环境。在本研究计划中提出的具体活动将为许多最终的应用领域建立基础，这些应用程序将转化为加拿大公司或全新企业的新产品。在大容量应用中使用石墨烯，例如在锂离子电池中，超级电容器和大面积膜进行分离，有望刺激加拿大的石墨经济，从而导致新的就业机会和出口。**