About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Materials for Energy Conversion and Storage VII
|
Presentation Title |
Morphology Evolution and Interface Instability of Sodium Metal Electrodes |
Author(s) |
Susmita Sarkar, Partha P. Mukherjee |
On-Site Speaker (Planned) |
Susmita Sarkar |
Abstract Scope |
The quest for high energy density anode material with low cost has generated significant interest in sodium (Na) metal batteries. However, higher reactivity of Na with the electrolyte causes poor electrochemical performance and amplifies the undesirable surface morphology evolution, such as dendritic growth and pit formation. Here, we have analyzed sodium deposition/stripping behavior with microstructural evolution at different temperatures using ether-based and carbonate-based electrolytes. We observed that the electrolyte solvent plays a major role in the process of electrochemical sodium deposition in a mossy, dendritic, or needle-like structures, which leads to failure. The nonuniformity of the morphology and microstructures of deposited/stripped metal at different electrochemical conditions can be linked to the impedance evolution. Here, the complexities of the morphological evolution and interface instability of sodium metal electrodes are discussed in the context of sodium metal batteries. |
Proceedings Inclusion? |
Planned: |
Keywords |
Other, Other, |