High power battery electrodes

高功率电池电极

• 批准号: 468656-2014
• 负责人: Rochefort, Dominic
• 金额: $ 20万
• 依托单位: Université de Montréal
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=619292
• 关键词: power; battery; electrodes

The development of electrical energy storage systems with improved performance will play a critical role inmaintaining the current quality of life in developed countries as well as in the sustainable growth of developingcountries. In the transportation sector, for instance, new technologies must be developed because energyconsumption and production that rely on the combustion of fossil fuels already have a severe impact on worldeconomics and ecology. The development of electric vehicles (EVs) and plug-in hybrid electric vehicles(PHEVs), which calls for more performing electric energy storage systems, would help to reduce theenvironmental impact of the transportation sector. Lithium-ion batteries are highly energetic storage devicesbut remain however very limited in terms of power, which hinders their integration in transportation vehicles.In this collaborative research project, we will study and develop lithium-ion battery electrodes that use novel,high performance binders to meet high power (1 kW/kg) and long-term cyclability requirements for applicationin EVs (>= 30000 cycles). The innovative and key aspect of the project lies in the use of elastomeric bindersthat were specifically designed by the industrial partner for the purpose of high power Lithium-ion batteries andthat will enable electrode fabrication by solvent-free processes. We will begin by optimizing the formulationwith regards to the mechanical stability and charging efficiency. The density of active material, porosity andthickness of the electrodes will be measured and their effect evaluated. Then, a thorough study of the agingprocesses of electrodes and cells obtained by solvent and solvent-free approaches will be undertaken usingelectronic (SEM, TEM) and in-situ scanning probe microscopies and electrochemical techniques. We will,during the last year of this project, fabricate a stacked system from extruded electrodes which will present 10sof Wh and study the stability and heat generation in such stacked system. The successful development of highpower batteries will stimulate the economy of clean "cars" related industries, helping to assure the quality ofour environment and contribute to the commitment of Canada to a cleaner environment.

开发性能改进的电能存储系统将对维持发达国家当前的生活质量以及发展中国家的可持续增长发挥关键作用。例如，在交通运输领域，必须开发新技术，因为依赖化石燃料燃烧的能源消耗和生产已经对世界经济和生态产生了严重影响。电动汽车（EV）和插电式混合动力电动汽车（PHEV）的发展需要性能更高的电能存储系统，这将有助于减少交通运输业对环境的影响。锂离子电池是高能存储设备，但其功率仍然非常有限，这阻碍了它们在运输车辆中的集成。在这个合作研究项目中，我们将研究和开发锂离子电池电极，该电极使用新型高性能粘合剂满足电动汽车应用的高功率（1 kW/kg）和长期循环性能要求（>= 30000 次循环）。该项目的创新和关键方面在于使用由工业合作伙伴专门为高功率锂离子电池设计的弹性体粘合剂，这将使电极能够通过无溶剂工艺制造。我们将从机械稳定性和充电效率方面优化配方开始。将测量活性材料的密度、孔隙率和电极的厚度并评估它们的效果。然后，将使用电子（SEM、TEM）和原位扫描探针显微镜和电化学技术对通过溶剂和无溶剂方法获得的电极和电池的老化过程进行深入研究。我们将在该项目的最后一年，用挤压电极制造一个具有 10sof Wh 的堆叠系统，并研究该堆叠系统的稳定性和发热情况。高功率电池的成功开发将刺激清洁“汽车”相关产业的经济，有助于确保我们的环境质量，并有助于加拿大对更清洁环境的承诺。