Journal
ENERGY STORAGE MATERIALS
Volume 4, Issue -, Pages 79-83Publisher
ELSEVIER
DOI: 10.1016/j.ensm.2016.03.004
Keywords
Ball-milling; Closo-borate; Nanostructure; Phase transition; Superionic conductor
Funding
- Collaborative Research Center on Energy Materials, Tohoku University
- Advanced Low Carbon Technology Research and Development Program (ALCA) from the Japan Science and Technology Agency (JST)
- JSPS KAKENHI [25220911, 26820311]
- NSF [DMR-0944772]
- Grants-in-Aid for Scientific Research [26820311] Funding Source: KAKEN
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By a variety of techniques including X-ray powder diffraction, quasielastic neutron scattering, and AC impedance, we have probed the effect of mechanical milling on the phase behaviors of the different lithium and sodium closo-borate salt compounds containing B12H122-, B10H102-, and CB11H12- anions. We have found that the crystallite-size reduction and disordering effects of such milling enables the room-T stabilization of their high-T-like superionic-conducting phases. This demonstrates a viable strategy for better exploiting the impressive cation mobilities that are typically restricted to somewhat higher temperatures for this class of compounds. (C) 2016 Elsevier BY. All rights reserved.
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