面向电网储能的液态金属电池安全特性研究

项目名称： 面向电网储能的液态金属电池安全特性研究

项目编号： No.51307069

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 电工技术

项目作者： 王康丽

作者单位： 华中科技大学

项目金额： 25万元

中文摘要： 大规模储能是消纳可再生能源发电和建设智能电网的关键技术之一。新近发展起来的液态金属电池是一类廉价高效的大型电化学储能技术，有望应用于电网的大规模储能。作为一种全液态金属高温电池，其安全特性是储能领域普遍关心的问题。本项目将围绕液态金属电池的安全特性，分别从电池失效机制、材料的高温腐蚀行为及复杂工况下的电池安全特性等三个方面对影响电池安全性的主要因素进行系统地分析和研究。在此基础上，提出通过采用膏状电解质改善电池的安全性，通过建立SOC预测模型有效监测电池安全状态，初步解决液态金属电池安全性的一些关键科学问题，为其大规模储能应用奠定基础。

中文关键词： 液态金属电池；安全特性；失效机制；热模型；荷电状态估计

英文摘要： It is widely recognized that grid-scale energy storage is key to continue growth of renewable energy technologies and improve efficiency and reliability of the electric grid. Liquid metal battery is a promising energy storage technology for grid application because of low cost, simple assembly and long lifespan. However, high operating temperature and highly reactive electrode materials have raised concerns about their overall safety. This proposal is focused on safety issues of liquid metal batteries. Failure mode、high temperture corrosion mechanism of secondary cell components and cell performance under extreme conditions will be investigated and the main effects on safety of liquid metal batteries will be discussed. Meanwhile, paste electrolyte will be applied to improve cell safety and the precise models for predicting state of charge (SOC) will be developed. The ultimate goal for the proposal is to understand the safety issues of liquid metal batteries and provide the basis for the application of liquid metal batteries for grid-scale energy storage.

英文关键词： liquid metal batteries；safety；failure mode；thermal model；state of charge (SOC) estimation