| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
|
| Presentation Title |
Chemical Pre-intercalation Synthesis and Exfoliation of Bilayered Vanadium Oxides for Energy Storage Applications |
| Author(s) |
Ekaterina Pomerantseva |
| On-Site Speaker (Planned) |
Ekaterina Pomerantseva |
| Abstract Scope |
Chemical pre-intercalation synthesis approach is based on low-temperature sol-gel process and it involves incorporation of inorganic or organic ions into the structure of the growing oxide phase prior to electrochemical cycling. In this presentation, I will show that chemical pre-intercalation is a versatile method that can be used for the synthesis of a wide family of new oxide phases with layered structures. I will present the effect of chemically preintercalated ions on electrochemical performance of these new electrode materials in intercalation batteries. Stabilization effect enabled by the insertion of electrochemically inactive ions will be discussed. Additionally, effect of low-temperature annealing on electrochemical stability and rate capability will be shown. I will also demonstrate the first exfoliation of bilayered vanadium oxide leading to the formation of free-standing films composed of ultrathin nanoflakes. The materials and methods developed in this work have the potential to enable next-generation energy storage technologies. |