Bulletin of the American Physical Society
APS March Meeting 2014
Volume 59, Number 1
Monday–Friday, March 3–7, 2014; Denver, Colorado
Session A24: Focus Session: Materials for Electrochemical Energy Storage: Characterization and Computation Methods
8:00 AM–10:36 AM,
Monday, March 3, 2014
Sponsoring Units: DMP GERA DCOMP
Chair: Brandon Wood, Lawrence Livermore National Laboratory
Abstract ID: BAPS.2014.MAR.A24.8
Abstract: A24.00008 : Li-ion energy storage of two-dimensional ``MXene'' transition metal carbides*
9:48 AM–10:24 AM
Preview Abstract Abstract
(Oak Ridge National Laboratory, Oak Ridge, TN 37831)
A new class of two-dimensional early transition metal carbides and carbonitrides, the so-called MXenes, has been synthesized by extracting the ``A'' element from MAX phases. Experiments have demonstrated that MXenes (Ti$_2$C, V$_2$C, Nb$_2$C, Ti$_3$C$_2$...) are promising anode materials for lithium ion batteries, delivering high storage capacity and good rate performance. However, the mechanism of Li-ion storage on MXene surfaces is not clear, with counterintuitive differences in predicted vs measured capacities, and large differences between exfoliated and delaminated samples. I will discuss how a strong collaboration between theory and a range of experimental characterization methods, including x-ray adsorption spectroscopy and inelastic neutron scattering, is able to provide a including for the highest measured Li capacities.\\[4pt] In collaboration with Yu Xie, Alexander Kolesnikov, Oak Ridge National Laboratory; Xiquan Yu, Kyung-Wan Nam, Xiao-Qing Yang, Brookhaven National Laboratory; Michael Naguib, Vadym Mochalin, Michel Barsoum, and Yury Gogotsi, Department of Materials Science and Engineering, and A.J. Drexel Nanotechnology Insititute, Drexel University.
*Supported by the Fluid Interface Reactions, Structures and Transport Center, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2014.MAR.A24.8
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