Advanced electrochemical capacitors with engineered pseudocapacitive electrodes and novel polymer electrolytes

具有工程赝电容电极和新型聚合物电解质的先进电化学电容器

• 批准号: 341218-2011
• 负责人: Lian, Keryn
• 金额: $ 2.19万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=572200
• 关键词: Advanced; electrochemical; capacitors; engineered; pseudocapacitive

An electrochemical Capacitor (EC), also known as supercapacitor or ultracapacitor, is an electrochemical energy storage system with important applications in renewable energies. Possessing higher power density, faster charge/discharge rate, and longer cycle life than conventional batteries and higher energy density than conventional capacitors, ECs can fill the performance gap between these technologies. We have identified the current pressing needs for EC energy storage in three areas: a) lack of high energy density and high power density electrode materials; b) lack of high performance, non-corrosive, benign and environmental friendly electrolytes; and c) lack of electrolytes that allow minimal packaging weight and volume and enable flexible form factors. The scope of the proposed Discovery Grant is to explore novel material systems for high power and high energy EC devices to address these concerns. These new material systems will be comprised of novel electrode materials chemically modified for pseudocapacitance and of solid polymer electrolytes for high performance, high power and energy density, and easy processing. The short-term objectives are a) to develop electrodes with both double layer and pseudocapacitance, and b) to develop well-matched solid polymer electrolytes. The long-term goals are to demonstrate a material system that is electrochemically comparable to that of RuO2 (the current "gold standard"), and to demonstrate high performance multi-cell EC devices with a flexible form factor which meet the power and energy target specifications of realistic industrial applications. Along the way, we will develop a systematic understanding of the mechanisms of the interaction between the studied materials. The knowledge gained from the proposed program will not only be valuable for the development of ECs in general, but will also be applicable to other electrochemical energy storage systems (such as fuel cells and batteries).

电化学电容器(EC)又称超级电容器或超级电容器，是一种在可再生能源中有着重要应用的电化学储能系统。电化学电池具有比传统电池更高的功率密度、更快的充放电速率、更长的循环寿命和比传统电容器更高的能量密度，可以填补这些技术之间的性能差距。 我们在三个方面确定了当前对EC储能的迫切需求：a)缺乏高能量密度和高功率密度的电极材料；b)缺乏高性能、无腐蚀、无害和环保的电解液；以及c)缺乏能够将包装重量和体积降至最低并能够实现灵活外形的电解液。 拟议的发现拨款的范围是探索用于高功率和高能EC设备的新材料系统，以解决这些问题。这些新材料系统将由化学修饰的新型电极材料和用于高性能、高功率和高能量密度以及易于加工的固体聚合物电解质组成。短期目标是a)开发具有双电层和伪电容的电极，以及b)开发匹配良好的固体聚合物电解质。长期目标是展示一种在电化学上可与RuO2(当前的“黄金标准”)相媲美的材料体系，并展示具有灵活外形因数的高性能多电池EC器件，以满足现实工业应用的功率和能源目标规格。 在此过程中，我们将对所研究的材料之间的相互作用机制进行系统的了解。从该计划中获得的知识不仅对ECS的发展具有普遍的价值，而且也适用于其他电化学储能系统(如燃料电池和电池)。