In-situ Analysis of Mass and Mechanical Changes of Interfaces and Interphases in Energy Storage Systems by Electrochemical Quartz Crystal Microbalance with Dissipation Monitoring

随着社会电气化程度的不断提高，对性能更好的电池的需求也越来越大。然而，电池系统很复杂，充电和放电过程中有许多过程需要了解，以开发新材料和化学物质，从而实现更高效的储能技术。特别是，电池中的界面和中间相对于系统的寿命、安全性和耐久性至关重要，但由于纳米级尺寸以及电池运行期间不断变化的结构和化学性质，难以表征和监测。所要求的具有耗散监测功能的电化学石英晶体微天平（EQCM-D）是一种最先进的非侵入性表面敏感技术，用于对各种电池系统（如锂离子电池、锌离子电池和固态电池以及锌离子电容器）中阳极-电解质和阴极-电解质界面处的界面反应和相互作用进行时间分辨和定量分析。EQCM-D将提供有关质量和机械性能以及界面的形成和演变的宝贵信息，否则无法使用其他技术提取。EQCM-D将成为不列颠哥伦比亚省大学现场表征平台的一个组成部分，该平台将有力支持设计，开发和实施新能源存储技术的研究和培训计划，以实现更清洁的世界。

As we move toward an increasing electrification of society, there is a tremendous need for better-performing batteries. However, battery systems are complex and there are many processes in the charge and discharge that need to be understood to develop new materials and chemistries for more efficiency energy storage technologies. In particular, the interfaces and interphases in batteries are crucial for the lifetime, safety, and durability of the systems, but are difficult to characterize and monitor due to the nanoscale dimensions and evolving structure and chemistry during the battery operation. The requested Electrochemical Quartz Crystal Microbalance with Dissipation Monitoring (EQCM-D) is a state-of-the-art, non-invasive, and surface-sensitive technology for time-resolved and quantitative analysis of interfacial reactions and interactions at the anode-electrolyte and cathode-electrolyte interfaces in various battery systems, such as lithium-ion, zinc-ion, and solid-state batteries, and zinc-ion capacitors. The EQCM-D will provide invaluable information about the mass and mechanical properties, and the formation and evolution of interphases that otherwise cannot be extracted using other techniques. The EQCM-D will be an integral part of an in-situ characterization platform at the University of British Columbia, which will strong support the research and training programs in the design, development, and implementation of new energy storage technologies for a cleaner world.