| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Materials for Energy Conversion and Storage VI
|
| Presentation Title |
E-31: Understanding Dendritic Growth in Mg-based Batteries and Design of Metallic Anodes |
| Author(s) |
Rachel D. Davidson, Sarbajit Banerjee |
| On-Site Speaker (Planned) |
Rachel D. Davidson |
| Abstract Scope |
There is great interest in moving beyond lithium-ion towards magnesium-based electrochemical energy systems driven in large measure by the alleged imperviousness of metallic magnesium to dendrite formation, which would allow for the use of metal anodes affording much higher capacities than graphite. We recently demonstrated the remarkable formation of Mg dendrites upon the electrodeposition of Grignard reagents in ethereal solvents under galvanostatic conditions monitored using in situ videomicroscopy. Mechanisms of formation are understood by examining effects of applied current density and concentration of the electrolyte revealing morphologies ranging from fractals composed of aggregated 2D hexagonal plates to highly crystalline dendritic deposits with singular growth fronts. Formation of substrate-bound Mg nanowires and hollow particles with extended coverage across large areas which can potentially be used as frameworks for high-surface area Mg anodes exhibiting reduced propensity for dendrite formation will further be discussed. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |