New generation of solid state batteries

自90年代S以来，可充电锂离子电池是最广泛使用的储能材料。然而，今天大多数性能的电池已经几乎达到了它们的内在极限，而在性能和安全性方面的需求仍在不断增加。现有的商业电池可能无法满足新兴应用(电动汽车、可持续能源存储……)，甚至更具体、具有强大附加值的应用的日益增长的需求。在此背景下，有必要开发具有能量密度高、寿命长、生产成本低、维护少或免维护、安全性高等特点的先进电池技术。如果我们考虑到使用高电势材料、在高温下工作或设计特定的电池几何形状的可能性，固态锂离子电池可以经受住这样的要求。到目前为止，这种技术的发展面临着组装问题，这主要是由于陶瓷的脆性机械方面。该计划的创新和关键方面在于开发具有独创电池设计的固态电池，以绕过陶瓷的脆弱性。为了达到这些目标，我们将从开发良好的导电电解液开始。然后，将使用最好的材料通过对配方/工艺的彻底控制来优化复合电极。固态电池将使用开发的电解液和复合电极进行组装，以根据我们的工业合作伙伴定义的标准来评估其性能。将使用不同的显微成像、光谱和电化学技术对复合电极和电池的老化过程进行深入研究。该计划的挑战是在5年结束时开发和测试具有高体积能量密度和重量能量密度(&GT；400WH/kg和1000WH/L)的原型。高能固态电池的成功开发将刺激电动汽车行业的经济，保证我们的环境质量，并为加拿大限制其温室气体排放的承诺做出贡献。

Since the 90's, rechargeable Li-ion batteries are the most widely used for energy storage. However, today's most performing cells have almost reached their intrinsic limits while the demand in terms of performances and safety is still increasing. Available commercial batteries may not be able to meet the increasing needs of the emerging applications (electric vehicles, storage of sustainable energy...), or even more specific applications with strong added value. In this context, it is necessary to develop advanced battery technologies with characteristics such as high energy densities, long life, low production cost, little or no maintenance and a high degree of safety. Solid state Li-ion batteries may withstand such requirements if we consider the possibility to use high potential materials, to work at high temperature or to design specific cell geometry. Up to now the development of such technology has faced assembly problems essentially due to the brittle mechanical aspects of the ceramics. The innovative and key aspect of the program lies in the development of solid state batteries with an original cell design to get around the ceramic fragility. To reach the objectives, we will begin by the development of good conducting electrolytes. The best materials will then be used to optimize composite electrodes by a thorough control of the formulation/processes. Solid state batteries will be assembled using the electrolytes as developed and composite electrodes to evaluate their performances following standards defined by our industrial partner. An in-depth study of the aging processes of composite electrodes and cells will be undertaken using different microscopy imaging, spectroscopic and electrochemical techniques. The challenge of this program is to develop and to test prototypes with high volumetric and gravimetric energy densities (> 400 Wh/kg and 1000 Wh/L) at the end of the 5-years. The successful development of high energy solid state batteries will stimulate the economy of EV industry, assure the quality of our environment and contribute to the commitment of Canada to limit its greenhouse gas emission.