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Title: Review of the Stability/Capacity Trade-off in Silver Hollandite Lithium Battery Cathodes

Abstract

ABSTRACT Highly detailed structural characterization is required to understand the discharge mechanism in order to effectively investigate α-MnO 2structured lithium battery cathode materials. This paper discusses recent findings which elucidate the lithiation mechanism of silver-hollandite, Ag xMn 8O 16. For Ag 1.2Mn 8O 16, the structure is not significantly perturbed during the first 2 equivalents of lithiation and the electrochemistry is highly reversible. Upon 4 equivalents of lithiation, the structure becomes highly distorted, in correlation with capacity fade observed over 40 cycles. Notably, regarding capacity fade, modifications to Ag/Mn ratio are less impactful than modifications to the α-MnO 2crystallite size. This is shown in comparisons of two materials with the same stoichiometry (Ag 1.4Mn 8O 16) and differing crystallite size (10 and 15 nm).

Authors:
; ; ; ;
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)
OSTI Identifier:
1470270
DOE Contract Number:  
SC0012673
Resource Type:
Journal Article
Journal Name:
MRS Advances
Additional Journal Information:
Journal Volume: 3; Journal Issue: 14; 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 2059-8521
Publisher:
Materials Research Society (MRS)
Country of Publication:
United States
Language:
English
Subject:
energy storage (including batteries and capacitors), charge transport, mesostructured materials

Citation Formats

Smith, Paul F., Lutz, Diana M., Takeuchi, Esther S., Takeuchi, Kenneth J., and Marschilok, Amy C. Review of the Stability/Capacity Trade-off in Silver Hollandite Lithium Battery Cathodes. United States: N. p., 2018. Web. doi:10.1557/adv.2018.306.
Smith, Paul F., Lutz, Diana M., Takeuchi, Esther S., Takeuchi, Kenneth J., & Marschilok, Amy C. Review of the Stability/Capacity Trade-off in Silver Hollandite Lithium Battery Cathodes. United States. doi:10.1557/adv.2018.306.
Smith, Paul F., Lutz, Diana M., Takeuchi, Esther S., Takeuchi, Kenneth J., and Marschilok, Amy C. Mon . "Review of the Stability/Capacity Trade-off in Silver Hollandite Lithium Battery Cathodes". United States. doi:10.1557/adv.2018.306.
@article{osti_1470270,
title = {Review of the Stability/Capacity Trade-off in Silver Hollandite Lithium Battery Cathodes},
author = {Smith, Paul F. and Lutz, Diana M. and Takeuchi, Esther S. and Takeuchi, Kenneth J. and Marschilok, Amy C.},
abstractNote = {ABSTRACT Highly detailed structural characterization is required to understand the discharge mechanism in order to effectively investigate α-MnO2structured lithium battery cathode materials. This paper discusses recent findings which elucidate the lithiation mechanism of silver-hollandite, AgxMn8O16. For Ag1.2Mn8O16, the structure is not significantly perturbed during the first 2 equivalents of lithiation and the electrochemistry is highly reversible. Upon 4 equivalents of lithiation, the structure becomes highly distorted, in correlation with capacity fade observed over 40 cycles. Notably, regarding capacity fade, modifications to Ag/Mn ratio are less impactful than modifications to the α-MnO2crystallite size. This is shown in comparisons of two materials with the same stoichiometry (Ag1.4Mn8O16) and differing crystallite size (10 and 15 nm).},
doi = {10.1557/adv.2018.306},
journal = {MRS Advances},
issn = {2059-8521},
number = 14,
volume = 3,
place = {United States},
year = {2018},
month = {1}
}