Journal article
Chemically modified Ba6Mn24O48 tunnel manganite as a lithium insertion host
Solid state ionics, v 181(21-22), pp 1002-1008
26 Jul 2010
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The electrochemical behavior of chemically modified tunnel - type Ba6Mn24O48 powder and whiskers has been examined in terms of the lithium intercalation/deintercalation. A maximum overall specific capacity of 136 mAh/g was achieved for the nanostructured form of the proton-exchanged Ba6Mn24O48 phase. This phase is formed by Ba2+/H+ exchange, a process which is also accompanied by Mn dissolution, a commensurate increase in the Mn oxidation state, and an anisotropic shrinkage of the unit cell. Three types of lithium ions were detected in the Li NMR spectra of the chemically and electrochemically lithiated materials. Li resonances at similar to 380 and 280 ppm, due to sites nearby both Mn3+/Mn4+ ions in the large tunnels were seen in the ion-exchanged samples, while resonances at similar locations and at 100 ppm (due to Li near Mn3+), were observed in the electrochemically lithiated materials. The investigated materials show potential as "electrochemically-active-and-reinforcing" components, and open up strategy with which to produce composite flexible electrodes for lithium-ion batteries. (C) 2010 Elsevier B.V. All rights reserved.
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Details
- Title
- Chemically modified Ba6Mn24O48 tunnel manganite as a lithium insertion host
- Creators
- Ekaterina A. Pomerantseva - Moscow State UniversityTatyana L. Kulova - Frumkin Institute of Physical Chemistry and ElectrochemistryDongli Zeng - Stony Brook UniversityAlexander M. Skundin - Frumkin Institute of Physical Chemistry and ElectrochemistryClare P. Grey - Stony Brook UniversityEugene A. Goodilin - Lomonosov Moscow State UniversityYuri D. Tretyakov - Lomonosov Moscow State University
- Publication Details
- Solid state ionics, v 181(21-22), pp 1002-1008
- Publisher
- Elsevier
- Number of pages
- 7
- Grant note
- DE-AC02-05CH11231 / Office of Vehicle Technologies of the U.S. Department of Energy; United States Department of Energy (DOE) MD-1264.2007.3; 02.513.11.3146; 02.513.11.3148; 02.513.11.3119; 02.513.11.3118 / Federal Targeted Scientific and Technical Program 6517749 / Lawrence Berkeley National Laboratory; United States Department of Energy (DOE) RUT1-2904-MO-07 / U.S. Civilian Research and Development Foundation 07-03-00749-a / Russian Foundation for Basic Research; Russian Foundation for Basic Research (RFBR); Spanish Government
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000280820200008
- Scopus ID
- 2-s2.0-77955324857
- Other Identifier
- 991020785754604721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Physics, Condensed Matter