| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
2021 Undergraduate Student Poster Contest
|
| Presentation Title |
Exploring the Liquid Phase Exfoliation of Two-Dimensional Bilayered Vanadium Oxide in Aqueous Media for Li ion Batteries |
| Author(s) |
Raymond Zhang, Timofey Averianov, Ekaterina Pomerantseva |
| On-Site Speaker (Planned) |
Raymond Zhang |
| Abstract Scope |
In this work, the exfoliation of bilayered vanadium oxide (BVO) intercalated with Li+ ions (δ-LixV2O5·nH2O) in water and performance of the produced nanoflakes in Li ion batteries has been studied for the first time.
BVO nanoflakes suspended in aqueous media were obtained with high yield and chemical stability using probe sonication, despite the partial solubility of vanadium oxide in water. The exfoliated material maintained two-dimensional (2D) morphology and preserved the bilayered structure. Furthermore, electrochemical testing revealed the importance of implementing proper drying protocols to reduce interlayer water content in BVO to improve ion storage capacity. Here, we demonstrate that through vacuum drying at 200ºC, the BVO nanoflake cathode can deliver capacities as high as 246mAh/g at a current density of 20mA/g.
These results introduce an environmentally friendly and safe approach to obtaining 2D BVO nanoflakes and offers pathways to constructing novel 2D heterostructures for energy storage applications. |