About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
Synthesis, Characterization, Modeling and Applications of Functional Porous Materials
|
Presentation Title |
Electrochemically-induced Amorphous to
Crystalline Transformation in Niobium Oxide Electrodes for Lithium-ion
Batteries
|
Author(s) |
Hui Xiong, Pete Barnes, Yunxing Zuo, Kiev Dixon, Shyue Ping Ong |
On-Site Speaker (Planned) |
Hui Xiong |
Abstract Scope |
Intercalation-type metal oxide electrodes are promising negative electrode materials for safe and stable operation of rechargeable lithium-ion batteries due to the reduced risk of Li plating at low voltages. Nevertheless, lower energy and power density along with cycling instability remain a bottleneck for their implementation, especially for desirable fast charging applications. In this talk, we will discuss an electrochemically driven amorphous-to-crystalline (a-to-c) transformation in a nanoporous Nb2O5 material for Li ion storage. Through integrated experimental and computational study, we elucidated the mechanism of multi-electron transfer reaction in the a-to-c Nb2O5 electrode as well as its enhanced kinetics for Li-ion batteries. |