The Study of Performance of a High Entropy Material for Anodes in Lithium Batteries
Authors:
- Students:
- Michal Andrzczaejk
- Lola Bahrs
- Cole Barruffi
- Nathan Beltran
- Ava Dow
- Caden Gilbert
- Nastia Kalyniouk,
- Macy Muellner
- Alexis Pachonphai
- Joey Paxhia
- Colin Schermerhorn
- Alexandra Skallas
- Megan Snow
- Alexander Spiegel
- Eleanor Zimmermann
- Teachers:
- Azra (Kay) Wagner
- Mentors:
- Carlo Segre (Illinois Institute of Technology, Advanced Photon Source, Sector 10-BM)
- Otavio Marques (Illinois Institute of Technology)
Advanced Photon Source Sector 10: MRCAT
High entropy materials have been studied as longer lasting and higher performing anodes for Lithium Ion batteries. The high entropy oxides offer increased charge capacity and longer cycling times. This research objective is to create a single phase of Magnesium Oxide, Nickel Oxide, Manganese Oxide, Iron (III) Oxide, and Cobalt Oxide using a ball milling and annealing process. This anode material was examined in multiple ways. X ray diffraction and scanning electron microscope measurements were taken in the laboratory at Illinois Tech to ensure that the sample was a single phase high entropy oxide and to determine morphology and overall composition of the sample. Ex situ EXAFS measurements were performed at 10 BM to study the valence states and local structures of each of the five metal ions in the pristine sample and in anodes which are in the lithiated and delithiated states after 1 and 100 cycles. These measurements will help to determine structural changes and failure mechanisms during charge and discharge cycling.