| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Materials for Energy Conversion and Storage VI
|
| Presentation Title |
Engineering Routes Towards Synthesis of Layered Oxide Materials for High-performance Sodium-ion Batteries |
| Author(s) |
Mengya Li, Yaocai Bai, David Lee Wood III, Ilias Belharouak, Jianlin Li |
| On-Site Speaker (Planned) |
Mengya Li |
| Abstract Scope |
An engaging area of sodium-ion battery (SIB) research has been focused on synthesizing high-performance cathode materials to meet the energy density requirement comparing to the state-of-the-art lithium-ion battery. The specific P2-type Na2/3Fe1/2Mn1/2O2 layered oxide cathodes employ low-cost materials and have a high theoretical capacity of 260 mAh/g, which encourages their application towards 300 Wh/kg SIBs. However, the reported capacities are often less than 200 mAh/g. Moreover, the widely-used synthesis methods of this material involve multi-step energy-intensive processing and often ends up with inhomogeneous morphology and impurities that make it challenging to scale-up. Here, we developed a new synthesis method to produce highly-crystalline P2-Na2/3Fe1/2Mn1/2O2 with homogeneous morphology, improved cell capacity, and the potential to scale up to 10 g per synthesis batch for further roll-to-roll manufacturing. Our new synthesis approach enables simplified material synthesis with ideal crystallinity, morphology, scalability, and electrochemical performance that are promising for fabricating low-cost, high-performance SIBs. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |