Electrochem Seminar - Developing high-capacity, low-voltage titanate anode materials for sodium-ion batteries

Electrochem Seminar - Developing high-capacity, low-voltage titanate anode materials for sodium-ion batteries

Abstract 

The identification and development of suitable anode materials remain a great challenge for Na-ion batteries. For reasons of low cost and high specific capacities, hard carbons are the most widely used Na-ion battery anode. However, Na+ inserts into hard carbons at low potentials that are only slightly above the sodium plating potentials, which raises safety concerns. With relatively higher Na+ intercalation voltages, sodium titanates are attractive alternatives. The structural/compositional diversity of this group of materials also offers an opportunity to tailor their electrochemical properties depending on the target usages. This talk will introduce a new non-stoichiometric lepidocrocite-structured sodium titanate (NaxTi2-x/4x/4O4) with potential application as Na-ion battery anode. Various factors that affect the Na+ storage capacity and reversibility will also be discussed.

Speaker
Dr. Wei Yin is a postdoctoral researcher working with Marca Doeff in the Energy Storage & Distributed Resources Division at Lawrence Berkeley National Laboratory since 2020. Before joining LBNL, she obtained her PhD in 2019 at Sorbonne University, France. Her research in LBNL focuses on developing high-capacity, low-voltage titanate anode materials for sodium-ion batteries and probing the interfacial properties of cathode materials for lithium-ion batteries.
Summary notes 
Date/Time 
Monday, April 5, 2021 -
3:00pm to 4:00pm
Type 
Seminar
PI 
Marca Deoff