About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Hume-Rothery Symposium on Connecting Macroscopic Materials Properties to Their Underlying Electronic Structure: The Role of Theory, Computation, and Experiment
|
Presentation Title |
From Layered Oxides to Disordered Rocksalt Cathodes: The Future of Energy Storage by Understanding the Atomistics of Li Diffusion |
Author(s) |
Gerbrand Ceder |
On-Site Speaker (Planned) |
Gerbrand Ceder |
Abstract Scope |
Layered cathode materials are the enabler of today’s Li-ion industry. In 2000, Dr. Van der Ven discovered the basic atomistic diffusion mechanism of Li-ions in layered cathode materials and laid the basis for our current understanding of Li transport in densely packed cathode materials. I will review some of the fundamental relations between electronic structure, cation ordering, and electrochemical performance in layered Li, Na and K-compounds, and show how the insights made in layered cathode materials are leading to a completely novel class of less resource constrained energy storage materials. By applying the same basic diffusion principles, disordered rocksalt cation materials can be turned into high-energy density materials by incorporating Li-excess. These materials diffuse lithium ions through a statistical network of low-energy migration environments and have recently been shown to have very high capacity and rate performance. |
Proceedings Inclusion? |
Planned: |