Fluorine-free aqueous electrolytes for sustainable green lithium-ion batteries

2019年04月29日

报告题目:Fluorine-free aqueous electrolytes for sustainable green lithium-ion batteries

报告人:李劼博士, 德国亥姆霍兹研究所

时间:2019-05-03 09:00

地点:卢嘉锡楼202报告厅

报告摘要:

The continuously increasing number and size of lithium-based batteries developed for largescale applications raise serious environmental concerns. Besides the toxic and costly transition metals (e.g. Ni, Co used in cathodes), key concerns are the flammability and toxicity of the electrolyte. Thus, water based electrolytes show increasing interest in recent years. In particular, highly concentrated electrolytes having no “free” solvent molecules present characteristics that differ significantly from their “diluted” 1M counterparts, especially concerning their electrochemical stability window (ESW). However, these electrolyte often use fluorinated lithium salt that may result in the raising of price and toxicity. This talk will address this issue by proposing a ’water in ionomer’ electrolyte via replacing expensive and toxic fluorinated lithium salts by a non-fluorinated, inexpensive and non-toxic superabsorbing ionomer.

报告人简介:

Jie Li received her PhD in Chemistry from Xiamen University (China) in 2008 and carried out post-doctoral research at the MEET Battery research center at University of Muenster, Germany. Meanwhile, she visited the MIT, USA, as a visiting student. From 2012 to 2018, she was co-founded by three ministries in Germany (BMBF, BMWi and BMU) to lead an independent young research group, working on morphology control and upscaling of cathode materials for LIBs. Since May 2018, she joined Helmholtz Institute Muenster (HI MS) as the leader of the “Materials and electrolytes for aqueous LIB batteries” group. Her current research focus on ceramic materials synthesis and characterization, as either active materials or electrolytes for energy storage devices. She is co-author of more than 70 peer-reviewed journal articles, 2 book chapters and 5 patents. She also works as associate editor for Journal of Power Sources.