| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Temperature Electrochemistry V
|
| Presentation Title |
Electrochemical Properties of Ca-Sb Metal Battery with a Molten Chloride Electrolyte |
| Author(s) |
Peyman Asghari-Rad, Sanghyeok Im, Kelly Elizabeth Varnell, Hojong Kim |
| On-Site Speaker (Planned) |
Peyman Asghari-Rad |
| Abstract Scope |
The electrochemical performance of the Ca||Sb metal battery was investigated in a calcium-chloride based molten salt electrolyte at 450–550 ºC to determine the cell voltage, round-trip current and voltage efficiencies, as well as discharge capacity. For this study, a three-electrode cell was developed using a binary Ca-Bi alloy (35 mol% Ca) as the reference electrode for reliable electrochemical measurements, leveraging the stability of two-phase behavior with solid Ca<sub>11</sub>Bi<sub>10</sub> and liquid Bi. The cell voltage of the positive electrode (Sb) was determined at various current densities of 50–500 mA cm<sup>-2</sup> to verify facile charge transfer and rapid mass transport near the electrode-electrolyte interface in complement with electrochemical impedance spectroscopy measurements. The measured electrochemical properties were corroborated by the post-mortem characterization of Sb electrodes at various states of discharge using scanning electron microscopy, powder X-ray diffraction, and inductively-coupled plasma mass spectrometry. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, Characterization, Other |