Speaker: Xiaolin Li, PNNL
Program Description:
Rechargeable batteries are increasingly indispensable in our daily lives as the modern society grows more dependent on sustainable and carbon-neutral energy resources. As the function of batteries relies on reversible redox reactions and smooth transfer of charge carriers (e.g. ions) in bulk electrodes, electrolyte, and interphases, it is essential to understand the bulk battery materials and interphase structures to guide the improvement of current battery technologies and the development of new chemistries. In this seminar, I will talk about some of our recent work on Na-ion and advanced Li-ion batteries. Particular focus will be on the design of hierarchical porous CNT@Si@C microsphere anodes and tuning of the interphases of layered sodium cathodes and hard carbon anodes.
- Hierarchical porous silicon structures with extraordinary mechanical strength as high-performance lithium-ion battery anodes. Nature Communications, 2020, 11, 1474.
- Vacancy-Enabled O3 Phase Stabilization for Manganese-rich Layered Sodium Cathodes. Angew Chem Int Ed. 2021 Jan 21. doi: 10.1002/anie.202016334.
- Controlling Surface Phase Transition and Chemical Reactivity of O3-Layered Metal Oxide Cathodes for High-Performance Na-Ion Batteries. ACS Energy Lett. 2020, 5, 6, 1718–1725.
- Revealing the Atomic Origin of Heterogeneous Li‐Ion Diffusion by Probing Na. Adv. Mater. 2019, 31, 1805889
- Lithium‐Pretreated Hard Carbon as High‐Performance Sodium‐Ion Battery Anodes. Adv. Energy Mater. 2018, 8, 1801441
- Tuning the Solid Electrolyte Interphase for Selective Li- and Na-Ion Storage in Hard Carbon. Adv. Mater. 2017, 29, 1606860
