Improvements of lithium metal polymer batteries

由于便携式设备的能量消耗不断增加，电能存储系统的开发具有相当大的重要性。在过去的20年里，锂离子电池得到了广泛的研究。当今性能最好的锂离子电池的最大重量能量密度达到250 Wh.kg-1。锂金属聚合物（LMP®）电池同样提供上级能量密度以及循环和日历寿命，能够满足即将到来的应用的要求，例如备用电源和电动汽车（EV）。然而，LMP®电池技术需要在60°C以上的温度下运行。该合作研究项目旨在了解和改善LMP®电池在各种应用（电动汽车或全方位服务的固定/备用电源设备）中的性能。该项目的创新和关键方面在于合成具有不同电气，机械和电化学性能的新型聚合物电解质。将研究使用新型聚合物电解质的电池在不同条件（温度和电流密度）下运行时的老化情况。最有前途的材料将被集成到真实的商业电池配置中，以定义其特定的电化学特性并确定其在应用中的集成。该CRD项目的成功将使电池成本在概念和操作层面大幅下降。它还将扩大LMP®技术的应用范围，远远超出电动汽车。优化的LMP电池的成功开发将刺激经济，并有助于加拿大致力于更清洁的环境。

The development of electrical energy storage systems is of considerable importance due to the increasing energy consumption of portable devices. Over the past 20 years, lithium-ion batteries have been widely studied. Today's most performing Li-ion cells reach a maximum gravimetric energy density of 250 Wh.kg-1. Lithium metal polymer (LMP®) batteries equally offer superior high energy densities as well as cycle and calendar life able to meet the requirements of upcoming applications such as stand-by power and Electrical Vehicles (EV). However, LMP® battery technology requires operation at a temperature above 60°C. This collaborative research project aims at understanding and improving the behavior of LMP® batteries for use in various applications (EV or full-service stationary/standby power equipment). The innovative and key aspect of the project lies in the synthesis of new polymer electrolytes with different electrical, mechanical and electrochemical properties. The aging of the batteries using the new polymer electrolytes will be studied upon operation in different conditions (temperature and current densities). The most promising materials will be integrated in real commercial battery configuration to define their specific electrochemical characteristics and to identify their integration in applications. The success of this CRD project will allow a substantial drop in the battery cost at the conception and operation level. It will also widen the application of the LMP® technology far beyond the EV. The successful development of optimized LMP® batteries will stimulate the economy and contribute to the commitment of Canada to a cleaner environment.