About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing of Functional and Energy Materials
|
Presentation Title |
Porous Lithium Ion Battery Cathodes Prepared Using Selective Laser Sintering Exhibit Complex Microstructure and Dual Phase State |
Author(s) |
Katherine A. Acord, Alexander D. Dupuy, Umberto Scipioni Bertoli, Baolong Zheng, William C. West, Qian Nataly Chen, Andrew A. Shapiro, Julie M. Schoenung |
On-Site Speaker (Planned) |
Katherine A. Acord |
Abstract Scope |
Three-dimensional (3D) printing is a promising manufacturing technique for the development of thick, complex geometry lithium ion battery (LIB) cathodes with enhanced energy and power density. We utilized selective laser sintering (SLS) to fabricate 3D lithium nickel cobalt aluminum oxide (NCA) cathodes without the use of electrochemically inactive components (e.g., binders, solvents). A parametric single-track study was performed to develop successful deposition conditions for 3D NCA components. Crystal structure transformations, known to influence electrochemical performance, were investigated using X-ray diffraction. The 3D NCA samples exhibit high geometric complexity, open porosity, good structural stability (i.e., crack-free), and dual phase states, that include the trigonal layered structure (R3 ̅m) and disordered rock salt (Fm3 ̅m) structure. The presence of the electrochemically active trigonal layered structure in the complex geometry NCA cathodes prepared using SLS is promising for the development of next generation LIBs. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |