Probing Mechanical Deformation and Evolution of Physical/Chemical Properties in High Capacity Li Battery Materials during Electrochemical Cycling Using In-Situ TEM
EMSL Project ID
46697
Abstract
The goal of this work is to probe electrochemical transformations in next-generation Li-ion battery materials in-situ to correlate morphology, structural changes, and physical degradation to electrochemical behavior and cycling performance; this will lead to accelerated development of high-energy batteries for vehicle electrification and portable electronics. Experiments utilizing state-of-the-art in-situ transmission electron microscopy (TEM) are proposed, in which the morphology, structure, and chemical environment of candidate battery materials can be examined with sub-angstrom resolution during lithiation/delithiation. Negative electrode materials including silicon, tin, and germanium will be studied, along with the positive electrode material sulfur.
Project Details
Project type
Exploratory Research
Start Date
2012-02-14
End Date
2013-02-24
Status
Closed
Released Data Link
Team
Principal Investigator
Related Publications
Liu N, H Wu, MT Mcdowell, Y Yao, CM Wang, and Y Cui. 2012. "A Yolk-Shell Design for Stabilized and Scalable Li-Ion Battery Alloy Anodes." Nano Letters 12(6):3315-3321. doi:10.1021/nl3014814
Mcdowell MT, I Ryu, S Lee, CM Wang, WD Nix, and Y Cui. 2012. "Studying The Kinetics Of Crystalline Silicon Nanoparticle Lithiation With In-Situ Transmission Electron Microscopy." Advanced Materials. doi:10.1002/adma.201202744
Mcdowell MT, S Lee, JT Harris, BA Korgel, CM Wang, WD Nix, and Y Cui. 2013. "In-situ TEM of Two-Phase Lithiation of Amorphous Silicon Nanospheres." Nano Letters 13(2):758-764. doi:10.1021/nl3044508