bevictor伟德官网舉辦“‘同心抗疫不松懈、學術交流不停歇’雲端系列學術報告八：Non-flammable electrolytes for emerging potassium and Zinc ion batteries”

4月26日，bevictor伟德官网在線上開展了“雲端系列學術報告八：Non-flammable electrolytes for emerging potassium and Zinc ion batteries”講座。本次講座邀請了澳大利亞阿德萊德大學化學工程與先進材料學院Prof. Zaipai Guo進行講解。講座由我院闵宇霖教授主持，參會人員為我院各年級師生。

郭教授表示，高效可靠的儲能系統對現代社會至關重要，電池的安全性越來越重要，在惡劣的操作條件下，易燃電解液和電極材料之間發生放熱化學反應的可能引起電池火災等大規模災害，而非易燃電解質可以從本質上消除火災危險，提高電池安全性。鉀離子電池的理論容量和能量密度太低，且有電池體積膨脹太大的問題，将電解質鹽從KPF6換成KFSI後，其性能有很大提升。鉀離子電池現在依然采用的易燃電解質，為了解決易燃電解液的安全問題，采用了用阻燃劑TEP作為溶劑的策略。針對鋅離子電池，采用加入添加劑形成原位SEI的策略，提升了鋅離子電池的性能。

在講座最後的問答環節，同學們就配電解液時，如何将電解質加入到溶劑裡；出現不完全溶解現象的解決辦法和水系電池電力儲能的制約條件等問題提出了疑問。郭教授根據自己的實驗經驗，針對這些問題進行了回複，電解質應該少量多次添加到溶劑裡，水系電池以鋅離子電池為例，面臨的主要問題是開發容量高、性能好、與電解液匹配度高的正極，且儲能電站一般建在野外，電池對高低溫的适應程度也是重要因素。郭教授鼓勵同學們在科研上要“想做·敢做·堅持”,同學們受到了極大的鼓舞。

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：宮雪容）