Metal organic framework-based composite solid-state electrolyte for lithium metal batteries

用于锂金属电池的金属有机骨架基复合固态电解质

• 批准号: 556344-2020
• 负责人: Chen, Zhongwei
• 金额: $ 7.29万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=705884
• 关键词: Metal; organic; framework; based; composite

Lithium-ion batteries (LIBs) are promising electrochemical storage technologies for a wide range of energy storage and conversion applications, particularly energy grids and electric vehicles (EVs). However, critical storage capacity and driving range limitations have prompted the development of a new generation of LIBs, equipped with metallic Li anodes that potentially support higher energy density. Widespread deployment of these so-called Li metal batteries has been slow, owing to safety hazards (fires and explosions) linked to Li dendrite formation caused by the technology's conventional liquid electrolytes. The use of solid-state electrolytes (SSEs) is a promising solution to this problem, offering far superior safety performance. However, the most common SSEs, pure ceramic or polymer based systems are limited by unsatisfactory electrochemical stability and poor interfacial contact with electrodes, or low ionic conductivity and poor thermal stability. Solutions to these critical shortcomings are required to drive Li metal batteries towards commercialization. The proposed project will advance a novel metal organic framework (MOF)-based composite SSE (CSSE), in which MOF systems are highly controllable and offer key advantages of direct growth onto polymer matrices and active material to achieve good stability, low interfacial resistance, higher conductivity, and good flexibility. The resulting technology will satisfy increasingly strict requirements for a good SSE, even under high voltage operation. Specifically, Dr. Zhongwei Chen's group at the University of Waterloo will work with two leading manufacturers of engineered battery platforms and parts, EVT Power Inc. and Forte Mobility Co. Ltd., to fill the knowledge gaps and represent immense progress on Li metal battery technology development. The project will help enable Canadian LIB manufacturers to produce large-scale batteries for EV and energy grid storage applications in Canada and beyond, at a lower cost and with less environmental impact. Moreover, this project will train a new pool of innovators for Canada's energy storage, automobile manufacturing, and transportation industries.

锂离子电池（LIB）是一种有前途的电化学存储技术，适用于广泛的能量存储和转换应用，特别是能源电网和电动汽车（EV）。然而，关键的存储容量和驱动范围的限制促使新一代LIB的发展，配备了金属锂阳极，可能支持更高的能量密度。这些所谓的锂金属电池的广泛部署一直很缓慢，这是由于该技术的传统液体电解质引起的锂枝晶形成相关的安全隐患（火灾和爆炸）。固态电解质（SSE）的使用是解决该问题的一个有前途的方案，提供了远为上级的安全性能。然而，最常见的SSE、纯陶瓷或聚合物基系统受到不令人满意的电化学稳定性和与电极的界面接触差、或低离子电导率和差的热稳定性的限制。这些关键缺点的解决方案需要推动锂金属电池走向商业化。该拟议项目将推进一种新型金属有机框架（MOF）基复合材料SSE（CSSE），其中MOF系统具有高度可控性，并提供直接生长到聚合物基质和活性材料上的关键优势，以实现良好的稳定性、低界面电阻、更高的导电性和良好的柔性。由此产生的技术将满足日益严格的要求，一个良好的SSE，即使在高电压操作。具体来说，滑铁卢大学的Zhongwei Chen博士的团队将与两家领先的工程电池平台和部件制造商EVT Power Inc.合作。和Forte Mobility Co. Ltd.，填补了知识空白，代表了锂金属电池技术发展的巨大进步。该项目将帮助加拿大锂电池制造商以更低的成本和更小的环境影响，在加拿大及其他地区生产用于电动汽车和电网存储应用的大型电池。此外，该项目还将为加拿大的能源储存、汽车制造和运输行业培养一批新的创新人才。