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Title: Single Ion Conducting Hairy Nanoparticle Additive to Improve Cycling Stability of Solid Polymer Electrolytes

Abstract

The development of a solid electrolyte that can impede dendrite growth while still maintaining an appropriate level of conductivity is essential for improving performance of solid-state Li-ion battery. In this paper, we report the synthesis of single Li-ion conducting hairy nanoparticle (NP) materials that improved the cycling stability of lithium bis(trifluoromethanesulfonyl)imide (LiTFSI)-doped poly(ethylene oxide) (PEO) solid electrolyte without significant reduction in conductivity. To unveil mechanisms leading to improved cycling stability, several characterization techniques including broadband dielectric spectroscopy, differential scanning calorimetry, small angle X-ray scattering, transmission electron microscopy, and shear rheology were used to study properties of polymer composites (PC) with added hairy NPs. It was found that hairy NPs influenced the Li/electrolyte interface and improved mechanical properties of bulk composites, all of which contributed to homogenous Li plating and stripping. The improved performance has been found in composites with concentrations of 4.8 and 9.1 weight % of added hairy NPs, which enabled Li cycling stability at 0.2 mA cm–2 critical current density (>300 h) that was otherwise not possible in either PEO-LiTFSI alone or PEO-LiTFSI composites containing a polymer identical to that attached to hairy NPs. Based on the discovered ability of hairy NP to influence bulk and interfacial propertiesmore » of solid electrolyte, their use as additives is expected to be equally effective in reducing dendrite formation in other electrolytes relevant for the design of solid-state battery.« less

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [3]; ORCiD logo [1]
+ Show Author Affiliations
  1. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
  2. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
  3. Beijing University of Chemical Technology (China)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
OSTI Identifier:
1991684
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
ACS Applied Energy Materials
Additional Journal Information:
Journal Volume: 6; Journal Issue: 15; Journal ID: ISSN 2574-0962
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; composites; electrical conductivity; electrochemical cells; electrolytes; polymers; solid state battery; hairy nanoparticles; single ion conducting polymers; cycling stability; dendrites

Citation Formats

Bocharova, Vera, Chen, Xi Chelsea, Jeong, Seung Pyo, Zhou, Zhengping, Sacci, Robert L., Keum, Jong K., Gainaru, Catalin, Rahman, Md Anisur, Sahori, Ritu, Sun, Xiao-Guang, Cao, Pengfei, and Westover, Andrew. Single Ion Conducting Hairy Nanoparticle Additive to Improve Cycling Stability of Solid Polymer Electrolytes. United States: N. p., 2023. Web. doi:10.1021/acsaem.3c01106.
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Bocharova, Vera, Chen, Xi Chelsea, Jeong, Seung Pyo, Zhou, Zhengping, Sacci, Robert L., Keum, Jong K., Gainaru, Catalin, Rahman, Md Anisur, Sahori, Ritu, Sun, Xiao-Guang, Cao, Pengfei, & Westover, Andrew. Single Ion Conducting Hairy Nanoparticle Additive to Improve Cycling Stability of Solid Polymer Electrolytes. United States. https://doi.org/10.1021/acsaem.3c01106
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Bocharova, Vera, Chen, Xi Chelsea, Jeong, Seung Pyo, Zhou, Zhengping, Sacci, Robert L., Keum, Jong K., Gainaru, Catalin, Rahman, Md Anisur, Sahori, Ritu, Sun, Xiao-Guang, Cao, Pengfei, and Westover, Andrew. Mon . "Single Ion Conducting Hairy Nanoparticle Additive to Improve Cycling Stability of Solid Polymer Electrolytes". United States. https://doi.org/10.1021/acsaem.3c01106.
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@article{osti_1991684,
title = {Single Ion Conducting Hairy Nanoparticle Additive to Improve Cycling Stability of Solid Polymer Electrolytes},
author = {Bocharova, Vera and Chen, Xi Chelsea and Jeong, Seung Pyo and Zhou, Zhengping and Sacci, Robert L. and Keum, Jong K. and Gainaru, Catalin and Rahman, Md Anisur and Sahori, Ritu and Sun, Xiao-Guang and Cao, Pengfei and Westover, Andrew},
abstractNote = {The development of a solid electrolyte that can impede dendrite growth while still maintaining an appropriate level of conductivity is essential for improving performance of solid-state Li-ion battery. In this paper, we report the synthesis of single Li-ion conducting hairy nanoparticle (NP) materials that improved the cycling stability of lithium bis(trifluoromethanesulfonyl)imide (LiTFSI)-doped poly(ethylene oxide) (PEO) solid electrolyte without significant reduction in conductivity. To unveil mechanisms leading to improved cycling stability, several characterization techniques including broadband dielectric spectroscopy, differential scanning calorimetry, small angle X-ray scattering, transmission electron microscopy, and shear rheology were used to study properties of polymer composites (PC) with added hairy NPs. It was found that hairy NPs influenced the Li/electrolyte interface and improved mechanical properties of bulk composites, all of which contributed to homogenous Li plating and stripping. The improved performance has been found in composites with concentrations of 4.8 and 9.1 weight % of added hairy NPs, which enabled Li cycling stability at 0.2 mA cm–2 critical current density (>300 h) that was otherwise not possible in either PEO-LiTFSI alone or PEO-LiTFSI composites containing a polymer identical to that attached to hairy NPs. Based on the discovered ability of hairy NP to influence bulk and interfacial properties of solid electrolyte, their use as additives is expected to be equally effective in reducing dendrite formation in other electrolytes relevant for the design of solid-state battery.},
doi = {10.1021/acsaem.3c01106},
journal = {ACS Applied Energy Materials},
number = 15,
volume = 6,
place = {United States},
year = {Mon Jul 17 00:00:00 EDT 2023},
month = {Mon Jul 17 00:00:00 EDT 2023}
}
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Journal Article:
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This content will become publicly available on July 17, 2024
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https://doi.org/10.1021/acsaem.3c01106
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