CEES Mission: To understand and control the molecular-scale reactivity of electrified oxide interfaces, films and materials that ultimately limits the performance of lithium-ion battery systems.
CEES Approach: Develop a robust understanding of electrochemical processes using well-defined systems to enable breakthrough developments that can lead to next-generation technologies, with a focus on oxides as model Li-ion cathodes.
To this end, CEES is exploring novel approaches to:
- Understand interfacial structure and composition (for example, by growth, modification)
- Use materials architectures to control phase changes (for example, thin films)
- Direct reactivity in novel Li chemistries (for example, “hybrid” Li-ion/Li-O2 systems)
This work is informed by state-of-the-art tools and facilities to obtain unprecedented understanding of this electrochemical behavior, including:
- In-situ observations using X-ray-based probes at the Advanced Photon Source at Argonne National Laboratory and complementary transmission electron microscopy at Northwestern University
- High-level computational approaches, including density functional theory and high-throughput computations
Our primary goal is an improved understanding of these processes that can be used to identify novel energy storage chemistries, and subsequently enabling next generation energy storage technologies having significant improvements in stored energy, cost, or lifetime.