| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials for Energy Applications
|
| Presentation Title |
Mechanical Activation Enhanced Solid-state Synthesis of NaCrO2 Cathode Material for Na-ion Batteries |
| Author(s) |
Leon L. Shaw, Mei Luo, Angel Ortiz |
| On-Site Speaker (Planned) |
Leon L. Shaw |
| Abstract Scope |
NaCrO2 has been studied lately as a promising cathode material for Na-ion batteries. Here, we have conducted the first investigation on mechanical activation enhanced (MAE) synthesis of NaCrO2 via in-situ synchrotron X-ray diffractometry (SXRD). MA of the reactant mixture is achieved via high-energy ball milling at room temperature before the high temperature reaction. It is found that MA can result in significant changes in the synthesis reaction of NaCrO2, including an increased reaction kinetics, an alternation of the reaction pathway, and a complete reaction at 900 C to form thermally-stable O3-NaCrO2 phase. In contrast, without MA the reaction product at 900 C is a highly impure NaCrO2 with poor thermal stability. The thermally-stable O3-NaCrO2 powder has a much higher specific capacity and better capacity retention over 300 charge/discharge cycles than the counterpart without MA. This study offers a new direction in synthesizing high performance NaCrO2 cathode material in the future. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, Powder Materials, Ceramics |