ISS: Collaborative Research: Examination of the Multi-physical Properties of Microgravity-synthesized Graphene Aerogels

ISS：合作研究：微重力合成石墨烯气凝胶的多物理性质检验

• 批准号: 1929447
• 负责人: Roya Maboudian
• 金额: $ 27.6万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-09-01 至 2023-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1929447&HistoricalAwards=false
• 关键词: ISS; Collaborative; Research; Examination; Multi

Graphene, a two-dimensional (2D) form of carbon, has generated extreme excitement since its discovery in 2004, due to its startling electrical, mechanical, and thermal properties. Yet, difficulties in realizing large-scale manufacturability of graphene has hindered mass adoption into target applications such as nanoelectronics, batteries, sensing and composites. Graphene aerogels, a class of materials made of 2D graphene sheets covalently crosslinked into a three-dimensional (3D) structure, largely retain many of the extraordinary properties of their graphene building blocks but are limited in size only by the container used during synthesis. In this work, graphene-based hydrogel synthesis in gravity (on Earth) and microgravity (on the International Space Station, ISS) conditions will be examined. Through experimentation in microgravity on the ISS, gravity-driven processes such as sedimentation and buoyancy-driven convection will be hindered, and underlying phenomena contributing to graphene aerogel assembly (e.g., random Brownian motion) will be isolated and investigated for the first time. This collaborative program also aims to reach elementary school students, undergraduate students, graduate students and the general public to raise awareness of the fields of nanotechnology and aerospace engineering, as well as careers in academia. To extend the knowledge of space-produced aerogel, we will compare the properties of microgravity-synthesized graphene aerogels to Earth-synthesized aerogels. The objectives are two-fold: (1) to study the growth behavior (cross-linking, agglomeration, drying) of graphene aerogels (GA) synthesis outside the presence of gravity; and (2) to examine and explain the influence of microgravity-based synthesis on the 3-dimensional (3D) mesostructure and multi-physical properties (thermal transport, mechanical behavior, and electrical characteristics) of GAs. Ultimately, this work will provide the foundation for engineering of graphene aerogels (and other aerogels) with highly homogenous microstructures and correspondingly superior electrical, mechanical, and thermal properties to enable a wide variety of Earth and space applications, such as, ultra-lightweight structural materials, supercapacitor and battery electrodes, hydrogen storage, and water treatment membranes. In addition, in-space production of aerogels on the ISS may enable direct use of materials and devices by ISS researchers and for future space missions.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

石墨烯是一种二维 (2D) 形式的碳，自 2004 年被发现以来，由于其令人惊叹的电气、机械和热性能，引起了极大的关注。然而，实现石墨烯大规模生产的困难阻碍了石墨烯在纳米电子、电池、传感和复合材料等目标应用中的大规模采用。石墨烯气凝胶是一类由 2D 石墨烯片共价交联成三维 (3D) 结构制成的材料，在很大程度上保留了石墨烯构建块的许多非凡性能，但尺寸仅受合成过程中使用的容器限制。在这项工作中，将研究重力（地球上）和微重力（国际空间站，ISS）条件下基于石墨烯的水凝胶的合成。通过国际空间站上的微重力实验，重力驱动的过程（例如沉降和浮力驱动的对流）将受到阻碍，并且将首次分离和研究有助于石墨烯气凝胶组装的潜在现象（例如随机布朗运动）。该合作项目还旨在吸引小学生、本科生、研究生和公众，以提高对纳米技术和航空航天工程领域以及学术界职业的认识。 为了扩展对太空产生的气凝胶的了解，我们将比较微重力合成的石墨烯气凝胶与地球合成的气凝胶的特性。目标有两个：（1）研究石墨烯气凝胶（GA）在重力之外合成的生长行为（交联、团聚、干燥）； (2) 检查和解释基于微重力的合成对 GA 的 3 维 (3D) 介观结构和多物理性质（热传输、机械行为和电特性）的影响。 最终，这项工作将为石墨烯气凝胶（和其他气凝胶）的工程提供基础，该气凝胶具有高度均匀的微观结构和相应优异的电学、机械和热性能，以实现各种地球和空间应用，例如超轻结构材料、超级电容器和电池电极、储氢和水处理膜。此外，在国际空间站上进行气凝胶的太空生产可以使国际空间站研究人员直接使用材料和设备来执行未来的太空任务。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Synthesis and characterization of UiO-66-NH2 incorporated graphene aerogel composites and their utilization for absorption of organic liquids

• DOI: 10.1016/j.carbon.2022.09.015
• 发表时间: 2022-09-26
• 期刊: CARBON
• 影响因子: 10.9
• 作者: Li, Zhou;Liu, Chen;Maboudian, Roya
• 通讯作者: Maboudian, Roya

Investigation of mechanical properties and structural integrity of graphene aerogels via molecular dynamics simulations

通过分子动力学模拟研究石墨烯气凝胶的机械性能和结构完整性

• DOI: 10.1039/d3cp02585c
• 发表时间: 2023
• 期刊: Physical Chemistry Chemical Physics
• 影响因子: 3.3
• 作者: Zheng, Bowen;Liu, Chen;Li, Zhou;Carraro, Carlo;Maboudian, Roya;Senesky, Debbie G.;Gu, Grace X.
• 通讯作者: Gu, Grace X.

Ordered porous RGO/SnO 2 thin films for ultrasensitive humidity detection

用于超灵敏湿度检测的有序多孔 RGO/SnO 2 薄膜

• DOI: 10.1039/d3tc00983a
• 发表时间: 2023
• 期刊: Journal of Materials Chemistry C
• 影响因子: 6.4
• 作者: Li, Zhou;Gardner, David W.;Xia, Yong;Zhao, Sikai;Pan, Aifei;Goel, Nishit;Bart, Stephen;Liu, Chen;Yi, Jianxin;Carraro, Carlo
• 通讯作者: Carraro, Carlo