Next Generation Conventional and Micro Supercapacitors based on Functionalized Graphene Quantum Dots

基于功能化石墨烯量子点的下一代传统和微型超级电容器

• 批准号: RGPIN-2017-04186
• 负责人: Yu, Aiping
• 金额: $ 3.42万
• 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: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=669412
• 关键词: Next; Generation; Conventional; Micro; Supercapacitors

For decades, Canada has enjoyed a significant lead in clean energy conversion and storage technologies internationally. In 2014, Canada ranked sixth in the world for investment in new domestic clean energy generation*programs. In the global race to establish new and greener sources of energy, supercapacitors and micro-supercapacitors have been receiving considerable interest. Their applications in electric vehicles, backup power and mobile miniaturized electronic devices highlights their potential to become an important power source. However, the current high cost and relative low energy density is prohibiting and limiting any wider applications.******* Thus, the main objectives for this 5-year proposed research program are the design and synthesis of next generation electrode and electrolyte materials, based on graphene quantum dots (GQDs), with a precise control of their compositions, surface functionalization, and fabrication for the development of high-performance supercapacitors and micro-supercapacitors with large energy and power densities as well as a long cycle life. GQDs have attracted attention recently for being applied in electrochemical energy systems that is not only due to the excellent performance of graphene, but also attributed to the quantum confinement and edge effects. In the proposed research, four main tasks will be followed and correlated to each other in order to fully achieve the objectives of this program. First, various chemical methods will be employed to control and scale up of the production of GQDs and the derivatives. In the second task, molecular functionalization will be performed on GQDs to be used as high performance electrodes; Thirdly in task 3, some amount of effort will be devoted to develop GQDs based solid electrolytes; In task 4, the distinct surface, electronic and structural properties and electrochemical performance of the synthesized GQDs in Task 1, 2 and 3 will be investigated by several physicochemical and electrochemical characterization techniques. Finally, in Task 5 conventional and miniaturized supercapacitors will be fabricated from optimized GQD-based electrodes and electrolytes and their practical performance will be tested and correlated to Task 3 for further optimization.******* It is expected that the results of the proposed research will provide a potential breakthrough needed in the effort to make supercapacitor systems a commercially viable technology through performance improvement, including durability, and energy storage efficiency. The success of the proposed research and training of HQPs will contribute to the highly needed technology and business activities and enterprises of Canadian clean energy and nanotechnology industries, so Canada will remain an international leader in these two fast paced emerging technologies, thus contributing to the development of a knowledge-based Canadian economy.******************

几十年来，加拿大在清洁能源转换和存储技术方面一直在国际上处于显着领先地位。 2014年，加拿大在国内新清洁能源发电*项目的投资方面排名世界第六。在建立新的绿色能源的全球竞赛中，超级电容器和微型超级电容器引起了人们的极大兴趣。它们在电动汽车、备用电源和移动小型电子设备中的应用凸显了它们成为重要电源的潜力。然而，目前的高成本和相对低的能量密度阻碍和限制了任何更广泛的应用。********因此，这个为期5年的研究计划的主要目标是设计和合成下一代电极和电解质基于石墨烯量子点（GQD）的材料，可精确控制其成分、表面功能化和制造，以开发具有高能量和功率密度以及长循环寿命的高性能超级电容器和微型超级电容器。 GQDs最近在电化学能源系统中的应用引起了人们的关注，这不仅归因于石墨烯的优异性能，还归因于量子限制和边缘效应。在拟议的研究中，将遵循四项相互关联的主要任务，以充分实现该计划的目标。首先，将采用各种化学方法来控制和扩大GQD及其衍生物的生产。在第二个任务中，将对GQD进行分子功能化，以用作高性能电极；第三，在任务3中，将投入一定的精力来开发基于GQDs的固体电解质；在任务 4 中，将通过多种物理化学和电化学表征技术研究任务 1、2 和 3 中合成的 GQD 的独特表面、电子和结构特性以及电化学性能。最后，在任务 5 中，传统和小型化超级电容器将由优化的基于 GQD 的电极和电解质制成，并将测试它们的实际性能，并将其与任务 3 相关联以进行进一步优化。****** 预计任务 5 的结果拟议的研究将提供潜在的突破，通过改进性能，包括耐用性和能量存储效率，使超级电容器系统成为商业上可行的技术。拟议的总部研究和培训的成功将为加拿大清洁能源和纳米技术行业急需的技术和商业活动以及企业做出贡献，因此加拿大将在这两项快节奏的新兴技术方面保持国际领先地位，从而为发展做出贡献以知识为基础的加拿大经济。 *****************