世博娱乐

TOPIC：Developing New Chemistries for Redox Flow Batteries
SPEAKER：Prof. Tianbiao Leo Liu, Utah State University
TIME: April. 30th（Tuesday） 9:00 a.m.
LOCATION: Room 410, Chemistry Building B （化学 B楼 410 会议室）
INVITER:钱雪峰教授

Abstract:
Aqueous organic redox flow batteries (AORFBs) have emerged as an attractive alternative RFB technology because redox active organic molecule materials are synthetically tunable, sustainable, and potentially low cost. The presentation will cover our recent research efforts in developing viologen anolyte materials for both anion and cation exchange pH neutral AORFBs with a variety of catholyte materials including ferrocene, TEMPO, ferrocyanide and halides. The viologen AORFBs demonstrated outstanding battery performance including an energy density of up to 30.4 Wh/L, a power density up to 220 mW/cm2, energy efficiency up to 72% at 60 mA/cm2, and capacity retention up to 99.999% per cycle up to 1000 cycles, representing the most stable organic RFB reported to date. In addition, this presentation will discuss mechanistic understandings of investigated redox active molecules using a variety of spectroscopic tools. Particularly, this presentation emphasizes that fundamental understandings of redox active electrolytes at molecular level are crucial to develop new generations of redox flow batteries for large scale and dispatchable renewable energy storage. 


Author Bio: 

Dr. Tianbiao Leo Liu received his Ph.D in Chemistry from Texas A&M University in 2009, served as staff scientist at Pacific Northwest National Laboratory from 2013 to 2015, and is currently a professor at Utah State University. His research is broadly spread on energy and green chemistry including electrocatalysis, electrochemical energy storage, and environmentally benign chemical transformations. Dr. Liu’s research has been recognized by a number of academic awards and honors,  including 2015 ACS Catalysis Lectureship, 2017-2019 Research Corporation Scialog Fellow on Advanced Energy Storage, and 2017 Utah Energy Triangle Faculty Award, 2019 NSF Career Award. Please visit our website for detail, www.tianbiaoliu.org.