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Title: Tailoring the Ag + Content within the Tunnels and on the Exposed Surfaces of α-MnO 2 Nanowires: Impact on Impedance and Electrochemistry

Abstract

Efficient conduction of both electrons and cations (e.g., Li +) has a profound effect on the current and capacity of lithium-based batteries. With this study, we focus on cathode effects, with the preparation of pure silver hollandite materials with variable silver ion content within (intra-tunnel) and on the surface of α-MnO 2 tunneled materials, followed by the measurement and analysis of impedance and electrochemistry data. Specifically, pure Ag xMn 8O 16-y materials with low (x = 1.13) and high (x = 1.54) intra-tunnel silver content are compared with Ag xMn 8O 16-y·aAg 2O (a = 0.25, 0.63, 1.43) composites prepared via a new Ag 2O coating strategy. When the Ag 2O (a = 0, 0.25) content is low, the material with higher intra-tunnel silver (x = 1.53) content delivers up to ~5-fold higher capacity accounted for by a ~10-fold lower impedance than its lower intra-tunnel silver (x = 1.13) counterpart. In the presence of high Ag 2O content (a = 0.63, 1.43), both composites exhibit comparable impedance but the lower intra-tunnel silver (x = 1.13) composite delivers up to ~1.5-fold higher capacity than higher intra-tunnel silver composite, highlighting the key role of Li + transport under those conditions. Our resultsmore » demonstrate material design strategies which can significantly increase electronic and ionic conductivities.« less

Authors:
 [1];  [1];  [2];  [2];  [2];  [3];  [4];  [4]
  1. Stony Brook Univ., NY (United States). Dept. of Chemistry
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Energy Sciences Directorate
  3. Stony Brook Univ., NY (United States). Dept. of Chemistry and Department of Materials Science and Engineering; Brookhaven National Lab. (BNL), Upton, NY (United States). Energy Sciences Directorate
  4. Stony Brook Univ., NY (United States). Dept. of Chemistry and Department of Materials Science and Engineering
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Center for Mesoscale Transport Properties (m2M)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
OSTI Identifier:
1388747
Grant/Contract Number:  
SC0012673; SC0012704
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 164; Journal Issue: 1; Related Information: m2M partners with Stony Brook University (lead); Brookhaven National Laboratory; Columbia University; Georgia Institute of Technology; Oak Ridge National Laboratory; Rensselaer Polytechnic Institute; University of California, Berkeley; University of North Carolina at Chapel Hill; Journal ID: ISSN 0013-4651
Publisher:
The Electrochemical Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 25 ENERGY STORAGE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; AC impedance; composite; lithium battery; lithium-ion battery; manganese oxide; silver hollandite; silver oxide

Citation Formats

Zhang, Bingjie, Smith, Paul F., Lee, Seung-Yong, Wu, Lijun, Zhu, Yimei, Takeuchi, Esther S., Marschilok, Amy C., and Takeuchi, Kenneth J. Tailoring the Ag+ Content within the Tunnels and on the Exposed Surfaces of α-MnO2 Nanowires: Impact on Impedance and Electrochemistry. United States: N. p., 2016. Web. doi:10.1149/2.0261701jes.
Zhang, Bingjie, Smith, Paul F., Lee, Seung-Yong, Wu, Lijun, Zhu, Yimei, Takeuchi, Esther S., Marschilok, Amy C., & Takeuchi, Kenneth J. Tailoring the Ag+ Content within the Tunnels and on the Exposed Surfaces of α-MnO2 Nanowires: Impact on Impedance and Electrochemistry. United States. doi:10.1149/2.0261701jes.
Zhang, Bingjie, Smith, Paul F., Lee, Seung-Yong, Wu, Lijun, Zhu, Yimei, Takeuchi, Esther S., Marschilok, Amy C., and Takeuchi, Kenneth J. Thu . "Tailoring the Ag+ Content within the Tunnels and on the Exposed Surfaces of α-MnO2 Nanowires: Impact on Impedance and Electrochemistry". United States. doi:10.1149/2.0261701jes. https://www.osti.gov/servlets/purl/1388747.
@article{osti_1388747,
title = {Tailoring the Ag+ Content within the Tunnels and on the Exposed Surfaces of α-MnO2 Nanowires: Impact on Impedance and Electrochemistry},
author = {Zhang, Bingjie and Smith, Paul F. and Lee, Seung-Yong and Wu, Lijun and Zhu, Yimei and Takeuchi, Esther S. and Marschilok, Amy C. and Takeuchi, Kenneth J.},
abstractNote = {Efficient conduction of both electrons and cations (e.g., Li+) has a profound effect on the current and capacity of lithium-based batteries. With this study, we focus on cathode effects, with the preparation of pure silver hollandite materials with variable silver ion content within (intra-tunnel) and on the surface of α-MnO2 tunneled materials, followed by the measurement and analysis of impedance and electrochemistry data. Specifically, pure AgxMn8O16-y materials with low (x = 1.13) and high (x = 1.54) intra-tunnel silver content are compared with AgxMn8O16-y·aAg2O (a = 0.25, 0.63, 1.43) composites prepared via a new Ag2O coating strategy. When the Ag2O (a = 0, 0.25) content is low, the material with higher intra-tunnel silver (x = 1.53) content delivers up to ~5-fold higher capacity accounted for by a ~10-fold lower impedance than its lower intra-tunnel silver (x = 1.13) counterpart. In the presence of high Ag2O content (a = 0.63, 1.43), both composites exhibit comparable impedance but the lower intra-tunnel silver (x = 1.13) composite delivers up to ~1.5-fold higher capacity than higher intra-tunnel silver composite, highlighting the key role of Li+ transport under those conditions. Our results demonstrate material design strategies which can significantly increase electronic and ionic conductivities.},
doi = {10.1149/2.0261701jes},
journal = {Journal of the Electrochemical Society},
number = 1,
volume = 164,
place = {United States},
year = {Thu Dec 01 00:00:00 EST 2016},
month = {Thu Dec 01 00:00:00 EST 2016}
}

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Works referenced in this record:

In situ profiling of lithium/Ag2VP2O8 primary batteries using energy dispersive X-ray diffraction
journal, January 2014

  • Kirshenbaum, Kevin C.; Bock, David C.; Zhong, Zhong
  • Physical Chemistry Chemical Physics, Vol. 16, Issue 19, p. 9138-9147
  • DOI: 10.1039/C4CP01220H