Title of Submission
Amorphous to Cubic Nanoporous Niobium Oxide Electrodes for Lithium-Ion Batteries
Material Science and Engineering, PhD
Major Advisor Name
Hui (Claire) Xiong
Type of Submission
New electrode materials are needed to produce the next generation of electrochemical energy storage (EES) devices. In the case of amorphous metal oxides, lower energy and power densities have been reported, in general. Nevertheless, amorphous oxides should not be overlooked as a potential electrode material. We report here on the electrochemically driven amorphous-to-crystalline phase transformation of an anodically grown nano-channeled niobium oxide (NCNO) electrode. The crystalline NCNO has exhibited improvements in stability and rate capability compared to its amorphous form. This work aims to gain a fundamental understanding of the structural evolution of the metal oxide and charge storage and transport mechanism.
National Science Foundation under Grant No. DMR-145984 and DMR-1408949