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Title: Todorokite-type manganese oxide nanowires as an intercalation cathode for Li-ion and Na-ion batteries

Abstract

Extended hydrothermal treatment at an elevated temperature of 220 °C allowed high yield synthesis of manganese oxide nanowires with a todorokite crystal structure suitable for ions intercalation. The flexible, high aspect ratio nanowires are 50–100 nm in diameter and up to several microns long, with 3 × 3 structural tunnels running parallel to the nanowire longitudinal axis. Moreover, the tunnels are occupied by magnesium ions and water molecules, with the chemical composition found to be Mg 0.2MnO 2·0.5H 2O. The todorokite nanowires were, for the first time, electrochemically tested in both Li-ion and Na-ion cells. A first discharge capacity of 158 mA h g -1 was achieved in a Na-ion system, which was found to be greater than the first discharge capacity in a Li-ion system (133 mA h g -1). In spite of the large structural tunnel dimensions, todorokite showed a significant first cycle capacity loss in a Na-ion battery. After 20 cycles, the capacity was found to stabilize around 50 mA h g -1 and remained at this level for 100 cycles. In a Li-ion system, todorokite nanowires showed significantly better capacity retention with 78% of its initial capacity remaining after 100 cycles. Rate capability tests also showedmore » superior performance of todorokite nanowires in Li-ion cells compared to Na-ion cells at higher current rates. Finally, these results highlight the difference in electrochemical cycling behavior of Li-ion and Na-ion batteries for a host material with spacious 3 × 3 tunnels tailored for large Na + ion intercalation.« less

Authors:
 [1];  [1];  [2];  [2];  [1]
  1. Drexel Univ., Philadelphia, PA (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1265902
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
RSC Advances
Additional Journal Information:
Journal Volume: 5; Journal Issue: 128; Journal ID: ISSN 2046-2069
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 36 MATERIALS SCIENCE

Citation Formats

Byles, B. W., West, P., Cullen, D. A., More, K. L., and Pomerantseva, E.. Todorokite-type manganese oxide nanowires as an intercalation cathode for Li-ion and Na-ion batteries. United States: N. p., 2015. Web. doi:10.1039/C5RA20624C.
Byles, B. W., West, P., Cullen, D. A., More, K. L., & Pomerantseva, E.. Todorokite-type manganese oxide nanowires as an intercalation cathode for Li-ion and Na-ion batteries. United States. doi:10.1039/C5RA20624C.
Byles, B. W., West, P., Cullen, D. A., More, K. L., and Pomerantseva, E.. Thu . "Todorokite-type manganese oxide nanowires as an intercalation cathode for Li-ion and Na-ion batteries". United States. doi:10.1039/C5RA20624C. https://www.osti.gov/servlets/purl/1265902.
@article{osti_1265902,
title = {Todorokite-type manganese oxide nanowires as an intercalation cathode for Li-ion and Na-ion batteries},
author = {Byles, B. W. and West, P. and Cullen, D. A. and More, K. L. and Pomerantseva, E.},
abstractNote = {Extended hydrothermal treatment at an elevated temperature of 220 °C allowed high yield synthesis of manganese oxide nanowires with a todorokite crystal structure suitable for ions intercalation. The flexible, high aspect ratio nanowires are 50–100 nm in diameter and up to several microns long, with 3 × 3 structural tunnels running parallel to the nanowire longitudinal axis. Moreover, the tunnels are occupied by magnesium ions and water molecules, with the chemical composition found to be Mg0.2MnO2·0.5H2O. The todorokite nanowires were, for the first time, electrochemically tested in both Li-ion and Na-ion cells. A first discharge capacity of 158 mA h g-1 was achieved in a Na-ion system, which was found to be greater than the first discharge capacity in a Li-ion system (133 mA h g-1). In spite of the large structural tunnel dimensions, todorokite showed a significant first cycle capacity loss in a Na-ion battery. After 20 cycles, the capacity was found to stabilize around 50 mA h g-1 and remained at this level for 100 cycles. In a Li-ion system, todorokite nanowires showed significantly better capacity retention with 78% of its initial capacity remaining after 100 cycles. Rate capability tests also showed superior performance of todorokite nanowires in Li-ion cells compared to Na-ion cells at higher current rates. Finally, these results highlight the difference in electrochemical cycling behavior of Li-ion and Na-ion batteries for a host material with spacious 3 × 3 tunnels tailored for large Na+ ion intercalation.},
doi = {10.1039/C5RA20624C},
journal = {RSC Advances},
number = 128,
volume = 5,
place = {United States},
year = {Thu Dec 03 00:00:00 EST 2015},
month = {Thu Dec 03 00:00:00 EST 2015}
}

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Works referenced in this record:

Sodium-Ion Batteries
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Electrode Materials for Rechargeable Sodium-Ion Batteries: Potential Alternatives to Current Lithium-Ion Batteries
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