我院举办“‘同心抗疫不松懈、学术交流不停歇’云端系列学术报告八：Non-flammable electrolytes for emerging potassium and Zinc ion batteries”

4月26日，36365线路检测中心在线上开展了“云端系列学术报告八：Non-flammable electrolytes for emerging potassium and Zinc ion batteries”讲座。本次讲座邀请了澳大利亚阿德莱德大学化学工程与先进材料学院Prof. Zaipai Guo进行讲解。讲座由我院闵宇霖教授主持，参会人员为我院各年级师生。

郭教授表示，高效可靠的储能系统对现代社会至关重要，电池的安全性越来越重要，在恶劣的操作条件下，易燃电解液和电极材料之间发生放热化学反应的可能引起电池火灾等大规模灾害，而非易燃电解质可以从本质上消除火灾危险，提高电池安全性。钾离子电池的理论容量和能量密度太低，且有电池体积膨胀太大的问题，将电解质盐从KPF6换成KFSI后，其性能有很大提升。钾离子电池现在依然采用的易燃电解质，为了解决易燃电解液的安全问题，采用了用阻燃剂TEP作为溶剂的策略。针对锌离子电池，采用加入添加剂形成原位SEI的策略，提升了锌离子电池的性能。

在讲座最后的问答环节，同学们就配电解液时，如何将电解质加入到溶剂里；出现不完全溶解现象的解决办法和水系电池电力储能的制约条件等问题提出了疑问。郭教授根据自己的实验经验，针对这些问题进行了回复，电解质应该少量多次添加到溶剂里，水系电池以锌离子电池为例，面临的主要问题是开发容量高、性能好、与电解液匹配度高的正极，且储能电站一般建在野外，电池对高低温的适应程度也是重要因素。郭教授鼓励同学们在科研上要“想做·敢做·坚持”,同学们受到了极大的鼓舞。

Professor Zaiping Guo is an Australian Laureate Fellow at School of Chemical Engineering & Advanced Materials, The University of Adelaide. She is also an Associate Editor for Chemical Science, a world-renowned journal in chemistry. Her research focuses on the design and application of electrode materials and electrolyte for energy storage and conversion, including rechargeable batteries, hydrogen storage, and fuel cells. She published more than 450 papers in peer-reviewed Journals, more than 250 papers were published in journals with IF > 10, and these publications have been cited >36,000 times with an h-index of 104. Her research achievements have been recognized through numerous awards, including an ARC Queen Elizabeth II Fellowship in 2010, an ARC Future Professorial Fellowship in 2015, an ARC Laureate Fellowship (2021), and the Clarivate Analytics Highly Cited Researcher Award in 2018, 2019, 2020, and 2021. She was also awarded 2020 NSW Premier's Prizes for Science & Engineering for Excellence in Engineering or Information and Communications Technology.

（供稿人：宫雪容）