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Title: Nanostructured Conductive Polymer Gels as a General Framework Material To Improve Electrochemical Performance of Cathode Materials in Li-Ion Batteries

Abstract

Controlling architecture of electrode composites is of particular importance to optimize both electronic and ionic conduction within the entire electrode and improve the dispersion of active particles, thus achieving the best energy delivery from a battery. Electrodes based on conventional binder systems that consist of carbon additives and nonconductive binder polymers suffer from aggregation of particles and poor physical connections, leading to decreased effective electronic and ionic conductivities. Here we developed a three-dimensional (3D) nanostructured hybrid inorganic-gel framework electrode by in situ polymerization of conductive polymer gel onto commercial lithium iron phosphate particles. This framework electrode exhibits greatly improved rate and cyclic performance because the highly conductive and hierarchically porous network of the hybrid gel framework promotes both electronic and ionic transport. In addition, both inorganic and organic components are uniformly distributed within the electrode because the polymer coating prevents active particles from aggregation, enabling full access to each particle. The robust framework further provides mechanical strength to support active electrode materials and improves the long-term electrochemical stability. The multifunctional conductive gel framework can be generalized for other high-capacity inorganic electrode materials to enable high-performance lithium ion batteries.

Authors:
 [1];  [1];  [1]; ;  [1]; ; ; ORCiD logo [2]; ORCiD logo [1]
  1. Materials Science and Engineering Program and Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
  2. Energy Sciences Directorate, Brookhaven National Laboratory, Upton, New York 11973, United States
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1462425
Report Number(s):
BNL-207908-2018-JARP
Journal ID: ISSN 1530-6984
DOE Contract Number:  
SC0012704
Resource Type:
Journal Article
Journal Name:
Nano Letters
Additional Journal Information:
Journal Volume: 17; Journal Issue: 3; Journal ID: ISSN 1530-6984
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; Lithium ion battery; conductive polymer; gel framework; lithium iron phosphate; energy storage; electrochemistry

Citation Formats

Shi, Ye, Zhou, Xingyi, Zhang, Jun, Bruck, Andrea M., Bond, Andrew C., Marschilok, Amy C., Takeuchi, Kenneth J., Takeuchi, Esther S., and Yu, Guihua. Nanostructured Conductive Polymer Gels as a General Framework Material To Improve Electrochemical Performance of Cathode Materials in Li-Ion Batteries. United States: N. p., 2017. Web. doi:10.1021/acs.nanolett.6b05227.
Shi, Ye, Zhou, Xingyi, Zhang, Jun, Bruck, Andrea M., Bond, Andrew C., Marschilok, Amy C., Takeuchi, Kenneth J., Takeuchi, Esther S., & Yu, Guihua. Nanostructured Conductive Polymer Gels as a General Framework Material To Improve Electrochemical Performance of Cathode Materials in Li-Ion Batteries. United States. doi:10.1021/acs.nanolett.6b05227.
Shi, Ye, Zhou, Xingyi, Zhang, Jun, Bruck, Andrea M., Bond, Andrew C., Marschilok, Amy C., Takeuchi, Kenneth J., Takeuchi, Esther S., and Yu, Guihua. Mon . "Nanostructured Conductive Polymer Gels as a General Framework Material To Improve Electrochemical Performance of Cathode Materials in Li-Ion Batteries". United States. doi:10.1021/acs.nanolett.6b05227.
@article{osti_1462425,
title = {Nanostructured Conductive Polymer Gels as a General Framework Material To Improve Electrochemical Performance of Cathode Materials in Li-Ion Batteries},
author = {Shi, Ye and Zhou, Xingyi and Zhang, Jun and Bruck, Andrea M. and Bond, Andrew C. and Marschilok, Amy C. and Takeuchi, Kenneth J. and Takeuchi, Esther S. and Yu, Guihua},
abstractNote = {Controlling architecture of electrode composites is of particular importance to optimize both electronic and ionic conduction within the entire electrode and improve the dispersion of active particles, thus achieving the best energy delivery from a battery. Electrodes based on conventional binder systems that consist of carbon additives and nonconductive binder polymers suffer from aggregation of particles and poor physical connections, leading to decreased effective electronic and ionic conductivities. Here we developed a three-dimensional (3D) nanostructured hybrid inorganic-gel framework electrode by in situ polymerization of conductive polymer gel onto commercial lithium iron phosphate particles. This framework electrode exhibits greatly improved rate and cyclic performance because the highly conductive and hierarchically porous network of the hybrid gel framework promotes both electronic and ionic transport. In addition, both inorganic and organic components are uniformly distributed within the electrode because the polymer coating prevents active particles from aggregation, enabling full access to each particle. The robust framework further provides mechanical strength to support active electrode materials and improves the long-term electrochemical stability. The multifunctional conductive gel framework can be generalized for other high-capacity inorganic electrode materials to enable high-performance lithium ion batteries.},
doi = {10.1021/acs.nanolett.6b05227},
journal = {Nano Letters},
issn = {1530-6984},
number = 3,
volume = 17,
place = {United States},
year = {2017},
month = {2}
}

Works referencing / citing this record:

Doping engineering of conductive polymer hydrogels and their application in advanced sensor technologies
journal, January 2019

  • Ma, Zhong; Shi, Wen; Yan, Ke
  • Chemical Science, Vol. 10, Issue 25
  • DOI: 10.1039/c9sc02033k

Doping engineering of conductive polymer hydrogels and their application in advanced sensor technologies
journal, January 2019

  • Ma, Zhong; Shi, Wen; Yan, Ke
  • Chemical Science, Vol. 10, Issue 25
  • DOI: 10.1039/c9sc02033k