Production of graphene by electrochemical exfoliation - Phase 1

通过电化学剥离生产石墨烯 - 第一阶段

• 批准号: 555936-2020
• 负责人: Roberts, Edward
• 金额: $ 9.11万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Idea to Innovation
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=704934
• 关键词: Production; graphene; electrochemical; exfoliation; Phase

This project focusses on the scale up and commercialization of an innovative method for the production of graphene using electrochemical exfoliation. Currently, graphene producers employ methods such as chemical vapour deposition, mechnaical and chemical exfoliation, but all these methods either produce low quality graphene or have a very high cost of production. Our lab scale experiments with electrochemical exfoliation have demonstrated some unique benefits over currently used methods, including: - Conversion of inexpensive, readily available graphite directly to exfoliated graphene in a timescale of minutes, and with ultra-low energy consumption (a few kWh/kg, vs. 300-1000 kWh/kg for other processes). - Operation at ambient temperature (<20°C vs 80°C or higher) and pressure. - Production of high-quality graphene, with low contamination, few defects, and high aspect ratio. - Production of a tunable graphene product, with properties tailored to different applications. For example we have tuned the process to produce a graphene that has outstanding resistance to oxidation and thermal stability at up to 800°C in air. Based on our preliminary laboratory studies we have demonstrated that the process has lower energy consumption, environmental impact, and production cost than conventional processes, with the added benefit product tunability. The produced graphene can be used in a wide range of applications, including batteries, fuel cells, electrolysers, conducting polymer composites, printed circuits, and electronic applications. In this project the process for graphene production by electrochemical exfoliation will be scaled up to gram and kilogram quantities and validated to confirm that consistent product quality can be obtained. The project will provide performance data for techno-economic evaluation and design data for scale up and pilot-scale testing.

该项目专注于一种利用电化学剥离生产石墨烯的创新方法的放大和商业化。目前，石墨烯生产商采用化学气相沉积、机械剥离和化学剥离等方法，但这些方法要么生产出质量较低的石墨烯，要么生产成本非常高。我们的实验室规模的电化学剥离实验表明，与目前使用的方法相比，有一些独特的好处，包括： -在几分钟内将廉价、容易获得的石墨直接转化为剥离的石墨烯，并且能耗极低(几千瓦时/千克，而其他工艺为300-1000千瓦时/千克)。 -在环境温度(&lt；20°C与80°C或更高)和压力下运行。 -生产高质量的石墨烯，污染低，缺陷少，长径比高。 -生产可调的石墨烯产品，其性能可根据不同的应用定制。例如，我们已经调整了工艺，以生产在空气中具有出色的抗氧化性和在高达800°C的热稳定性的石墨烯。 根据我们的初步实验室研究，我们已经证明，该工艺比传统工艺具有更低的能耗、环境影响和生产成本，并增加了产品的可调性。生产的石墨烯可广泛应用于电池、燃料电池、电解液、导电聚合物复合材料、印刷电路和电子应用。 在该项目中，电化学剥离生产石墨烯的工艺将扩大到克量和千克量，并进行验证，以确保获得一致的产品质量。该项目将为技术经济评估提供性能数据，并为扩大规模和中试测试提供设计数据。