About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Materials for Energy Conversion and Storage VI
|
| Presentation Title |
Toward Multivalent Zinc-ion Batteries: A Look at Zinc and Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> |
| Author(s) |
Jesse Sun-Woo Ko, Partha P. Paul, Natalie S. Seitzman, Ryan DeBlock, Bruce Dunn, Johanna Nelson Weker |
| On-Site Speaker (Planned) |
Jesse Sun-Woo Ko |
| Abstract Scope |
The rapidly growing field of multivalent batteries offers a path to a safer and more energy dense system compared to lithium-ion batteries. In particular, multivalent electrochemistry based on zinc can provide significant enhancement in capacity density (zinc: 5855 mAh cm<sup>−3</sup> versus lithium: 2061 mAh cm<sup>−3</sup>). For prospective cathodes, since questions regarding Zn<sup>2+</sup> intercalation remains largely unanswered, we explore the charge-storage properties of Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> (NVP), by X-ray synchrotron characterization to elucidate potential−dependent structural changes during cycling. We ascribe the reversible electrochemical behavior of NVP to a two-stage intercalation process involving both Na<sup>+</sup> and Zn<sup>2+</sup>. Moreover, we aim to understand the consequences of solvation/de-solvation to microstructural changes at the zinc metal interface during plating/stripping, by varying the ionic salt concentration in the electrolyte. The results of these findings present a comprehensive study of multivalent charge storage for a model cathode, coupled with insights into the dynamics of plating/stripping for zinc metal anodes. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |