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Title: Synthetic Control of Crystallite Size of Silver Vanadium Phosphorous Oxide (Ag 0.50VOPO 4·1.9H 2O): Impact on Electrochemistry

Here, this report describes a synthetic approach to control the crystallite size of silver vanadium phosphorous oxide, Ag 0.50VOPO 4·1.9H 2O, and the impact on electrochemistry in lithium based batteries. Ag 0.50VOPO 4·1.9H 2O was synthesized using a stirred hydrothermal method over a range of temperatures. X-ray diffraction (XRD) was used to confirm the crystalline phase and the crystallite size sizes of 11, 22, 38, 40, 49, and 120 nm. Particle shape was plate-like with edges <1 micron to >10 microns. Under galvanostatic reduction the samples with 22 nm crystallites and 880 nm particles produced the highest capacity, ~25% more capacity than the 120 nm sample. Notably, the 11 nm sample resulted in reduced delivered capacity and higher resistance consistent with increased grain boundaries contributing to resistance. Under intermittent pulsing ohmic resistance decreased with increasing crystallite size from 11 nm to 120 nm implying that electrical conduction within a crystal is more facile than between crystallites and across grain boundaries. Finally, this systematic study of material dimension shows that crystallite size impacts deliverable capacity as well as cell resistance where both interparticle and intraparticle transport are important.
Authors:
 [1] ;  [2] ;  [3] ;  [2]
  1. Stony Brook Univ., NY (United States). Department of Materials Science and Engineering
  2. Stony Brook Univ., NY (United States). Department of Materials Science and Engineering and Department of Chemistry
  3. Stony Brook Univ., NY (United States). Department of Materials Science and Engineering and Department of Chemistry; Brookhaven National Lab. (BNL), Upton, NY (United States). Energy Sciences Directorate
Publication Date:
Report Number(s):
BNL-114109-2017-JA
Journal ID: ISSN 0013-4651
Grant/Contract Number:
SC0012704; SC0012673
Type:
Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 164; Journal Issue: 6; Journal ID: ISSN 0013-4651
Publisher:
The Electrochemical Society
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States); 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)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; battery; crystallite size; electrochemistry; synthesis
OSTI Identifier:
1376156

Huie, Matthew M., Marschilok, Amy C., Takeuchi, Esther S., and Takeuchi, Kenneth J.. Synthetic Control of Crystallite Size of Silver Vanadium Phosphorous Oxide (Ag0.50VOPO4·1.9H2O): Impact on Electrochemistry. United States: N. p., Web. doi:10.1149/2.1331706jes.
Huie, Matthew M., Marschilok, Amy C., Takeuchi, Esther S., & Takeuchi, Kenneth J.. Synthetic Control of Crystallite Size of Silver Vanadium Phosphorous Oxide (Ag0.50VOPO4·1.9H2O): Impact on Electrochemistry. United States. doi:10.1149/2.1331706jes.
Huie, Matthew M., Marschilok, Amy C., Takeuchi, Esther S., and Takeuchi, Kenneth J.. 2017. "Synthetic Control of Crystallite Size of Silver Vanadium Phosphorous Oxide (Ag0.50VOPO4·1.9H2O): Impact on Electrochemistry". United States. doi:10.1149/2.1331706jes. https://www.osti.gov/servlets/purl/1376156.
@article{osti_1376156,
title = {Synthetic Control of Crystallite Size of Silver Vanadium Phosphorous Oxide (Ag0.50VOPO4·1.9H2O): Impact on Electrochemistry},
author = {Huie, Matthew M. and Marschilok, Amy C. and Takeuchi, Esther S. and Takeuchi, Kenneth J.},
abstractNote = {Here, this report describes a synthetic approach to control the crystallite size of silver vanadium phosphorous oxide, Ag0.50VOPO4·1.9H2O, and the impact on electrochemistry in lithium based batteries. Ag0.50VOPO4·1.9H2O was synthesized using a stirred hydrothermal method over a range of temperatures. X-ray diffraction (XRD) was used to confirm the crystalline phase and the crystallite size sizes of 11, 22, 38, 40, 49, and 120 nm. Particle shape was plate-like with edges <1 micron to >10 microns. Under galvanostatic reduction the samples with 22 nm crystallites and 880 nm particles produced the highest capacity, ~25% more capacity than the 120 nm sample. Notably, the 11 nm sample resulted in reduced delivered capacity and higher resistance consistent with increased grain boundaries contributing to resistance. Under intermittent pulsing ohmic resistance decreased with increasing crystallite size from 11 nm to 120 nm implying that electrical conduction within a crystal is more facile than between crystallites and across grain boundaries. Finally, this systematic study of material dimension shows that crystallite size impacts deliverable capacity as well as cell resistance where both interparticle and intraparticle transport are important.},
doi = {10.1149/2.1331706jes},
journal = {Journal of the Electrochemical Society},
number = 6,
volume = 164,
place = {United States},
year = {2017},
month = {4}
}