| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Materials for Energy Conversion and Storage VI
|
| Presentation Title |
Structuring Oxides from Atomistic to Mesoscale Dimensions to Mitigate Diffusion Limitations: Perspectives for Li-ion and “Beyond Li” Energy Storage |
| Author(s) |
Sarbajit Banerjee |
| On-Site Speaker (Planned) |
Sarbajit Banerjee |
| Abstract Scope |
The deficiencies of electrochemical energy storage are a major constraint in many areas of technological design. Using vanadium and antimony oxides as model systems, I will discuss the structural and electronic origins of diffusion barriers in cathode materials. I will emphasize in particular the coupling of electrochemistry with mechanics and the implications therein for generation of multiscale inhomogeneities and function. A combination of scanning transmission X-ray microscopy and ptychography with single-crystal X-ray diffraction has enabled mapping of diffusion pathways from atomistic dimensions to entire electrode structures. The mitigation of diffusion impediments will be discussed with reference to two distinct approaches: (a) utilization of curvature and nanoscale topographies and (b) the stabilization of metastable phases that provide frustrated coordination. The latter approach has led to the discovery of promising intercalation hosts for Mg- and Ca-ions as well as F-ions. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |