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Title: Hybrid Ag2VO2PO4/CFx as a High Capacity and Energy Cathode for Primary Batteries

Abstract

In this report, we describe the electrochemistry of hybrid dual silver vanadium phosphorus oxide/carbon fluoride (Ag2VO2PO4/CFx) cathodes with various weight ratios. Through modification of the Ag2VO2PO4/CFx ratio, we can control the gravimetric and volumetric capacity, as well as mitigate the voltage drop during high current pulses. The increase in impedance caused by irreversible LiF formation in CFx was reduced by the silver reduction-displacement during electrochemical discharge of the Ag2VO2PO4. Moreover, the addition of graphite was shown to reduce initial voltage delay. When Ag2VO2PO4 dominates the electrode mass (i.e. 75/25 Ag2VO2PO4/CFx) in the hybrid cathode, pulse testing shows less voltage drop and delay, but at the expense of capacity and energy density. As the amount of CFx in the composite increases (i.e. Ag2VO2PO4/CFx ratio of to 50/50 or 25/75), charge capacity and energy density increases, but at the expense of larger voltage drops and delays early in the discharge process. Thus, controlling the Ag2VO2PO4/CFx ratio can be used to tune the electrochemical properties of the dual cathode, allowing for optimization of capacity and power depending on the application.

Authors:
 [1];  [1];  [1];  [2];  [1];  [3];  [3]
+ Show Author Affiliations
  1. Stony Brook Univ., NY (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Stony Brook Univ., NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (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)
OSTI Identifier:
1425074
Report Number(s):
BNL-203217-2018-JAAM
Journal ID: ISSN 0013-4651
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 164; Journal Issue: 12; Journal ID: ISSN 0013-4651
Publisher:
The Electrochemical Society
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; electrochemistry; batteries; energy cathode; high capacity

Citation Formats

Li, Yue Ru, Bruck, Andrea M., Brady, Alexander B., Bock, David, Takeuchi, Kenneth J., Takeuchi, Esther S., and Marschilok, Amy C. Hybrid Ag2VO2PO4/CFx as a High Capacity and Energy Cathode for Primary Batteries. United States: N. p., 2017. Web. doi:10.1149/2.0991712jes.
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Li, Yue Ru, Bruck, Andrea M., Brady, Alexander B., Bock, David, Takeuchi, Kenneth J., Takeuchi, Esther S., & Marschilok, Amy C. Hybrid Ag2VO2PO4/CFx as a High Capacity and Energy Cathode for Primary Batteries. United States. https://doi.org/10.1149/2.0991712jes
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Li, Yue Ru, Bruck, Andrea M., Brady, Alexander B., Bock, David, Takeuchi, Kenneth J., Takeuchi, Esther S., and Marschilok, Amy C. Fri . "Hybrid Ag2VO2PO4/CFx as a High Capacity and Energy Cathode for Primary Batteries". United States. https://doi.org/10.1149/2.0991712jes. https://www.osti.gov/servlets/purl/1425074.
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@article{osti_1425074,
title = {Hybrid Ag2VO2PO4/CFx as a High Capacity and Energy Cathode for Primary Batteries},
author = {Li, Yue Ru and Bruck, Andrea M. and Brady, Alexander B. and Bock, David and Takeuchi, Kenneth J. and Takeuchi, Esther S. and Marschilok, Amy C.},
abstractNote = {In this report, we describe the electrochemistry of hybrid dual silver vanadium phosphorus oxide/carbon fluoride (Ag2VO2PO4/CFx) cathodes with various weight ratios. Through modification of the Ag2VO2PO4/CFx ratio, we can control the gravimetric and volumetric capacity, as well as mitigate the voltage drop during high current pulses. The increase in impedance caused by irreversible LiF formation in CFx was reduced by the silver reduction-displacement during electrochemical discharge of the Ag2VO2PO4. Moreover, the addition of graphite was shown to reduce initial voltage delay. When Ag2VO2PO4 dominates the electrode mass (i.e. 75/25 Ag2VO2PO4/CFx) in the hybrid cathode, pulse testing shows less voltage drop and delay, but at the expense of capacity and energy density. As the amount of CFx in the composite increases (i.e. Ag2VO2PO4/CFx ratio of to 50/50 or 25/75), charge capacity and energy density increases, but at the expense of larger voltage drops and delays early in the discharge process. Thus, controlling the Ag2VO2PO4/CFx ratio can be used to tune the electrochemical properties of the dual cathode, allowing for optimization of capacity and power depending on the application.},
doi = {10.1149/2.0991712jes},
journal = {Journal of the Electrochemical Society},
number = 12,
volume = 164,
place = {United States},
year = {Fri Aug 18 00:00:00 EDT 2017},
month = {Fri Aug 18 00:00:00 EDT 2017}
}
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https://doi.org/10.1149/2.0991712jes
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Works referenced in this record:

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    Works referencing / citing this record:

    Tomographic 3D Analysis of Reduction Displacement Reaction with Associated Formation of a Conductive Network in High Energy Primary Batteries
    journal, January 2019

    • Bruck, Andrea M.; Li, Yue Ru; Brady, Alexander B.
    • Journal of The Electrochemical Society, Vol. 166, Issue 14
    • DOI: 10.1149/2.0411914jes

    High Specific Energy Lithium Primary Batteries as Power Sources for Deep Space Exploration
    journal, January 2018

    • Krause, Frederick C.; Jones, John-Paul; Jones, Simon C.
    • Journal of The Electrochemical Society, Vol. 165, Issue 10
    • DOI: 10.1149/2.1061810jes
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