The Role of Functionalized Conducting Polymer Binders in Improving Power Density and Cycle Life of Lithium-Sulfur Batteries
Abstract
Abstract Lithium-sulfur batteries are promising as the next-generation of low-cost, high-energy rechargeable batteries. However, the commercialization of these batteries has been limited by poor rate capability and cycle life. To improve the performance of Li-S cells, we have investigated the role of two n-dopable conducting polymers, N2200 and N2200-OE, as binders for the sulfur cathode. The electron and ion transport properties of these polymer binders, along with their strong affinity for polysulfides, results in significantly enhanced performance compared to cells with the traditional insulating PVDF binder. The role of these conducting polymer binders in enhancing the performance of the cells is analyzed using impedance spectroscopy, shuttle current measurements, conductivity measurements, UV-Vis spectroscopy, GIWAXS studies, and post-cycling analysis of the anodes. The conducting polymer binders reduce the cell impedance by a factor of four, leading to a marked improvement in rate capability. The shuttling of the polysulfides and the formation of insoluble sulfides at the anode is curtailed by the interaction of the polysulfides with the backbone of the polymer binders, leading to an impressive capacity retention of 82% after 500 cycles. These studies demonstrate the benefit of tailored polymer binders at the sulfur electrode in addressing the limitations of lithium-sulfurmore »
- Authors:
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1892344
- Alternate Identifier(s):
- OSTI ID: 1889759
- Grant/Contract Number:
- SC0019381; AC02-76SF00515
- Resource Type:
- Published Article
- Journal Name:
- Journal of the Electrochemical Society
- Additional Journal Information:
- Journal Name: Journal of the Electrochemical Society Journal Volume: 169 Journal Issue: 10; Journal ID: ISSN 0013-4651
- Publisher:
- The Electrochemical Society
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Zayat, Billal, Elizalde-Segovia, Rodrigo, Das, Pratyusha, Salamat, Charlene Z., Irshad, Ahamed, Tolbert, Sarah H., Thompson, Barry C., and Narayanan, S. R. The Role of Functionalized Conducting Polymer Binders in Improving Power Density and Cycle Life of Lithium-Sulfur Batteries. United States: N. p., 2022.
Web. doi:10.1149/1945-7111/ac9551.
Zayat, Billal, Elizalde-Segovia, Rodrigo, Das, Pratyusha, Salamat, Charlene Z., Irshad, Ahamed, Tolbert, Sarah H., Thompson, Barry C., & Narayanan, S. R. The Role of Functionalized Conducting Polymer Binders in Improving Power Density and Cycle Life of Lithium-Sulfur Batteries. United States. https://doi.org/10.1149/1945-7111/ac9551
Zayat, Billal, Elizalde-Segovia, Rodrigo, Das, Pratyusha, Salamat, Charlene Z., Irshad, Ahamed, Tolbert, Sarah H., Thompson, Barry C., and Narayanan, S. R. Wed .
"The Role of Functionalized Conducting Polymer Binders in Improving Power Density and Cycle Life of Lithium-Sulfur Batteries". United States. https://doi.org/10.1149/1945-7111/ac9551.
@article{osti_1892344,
title = {The Role of Functionalized Conducting Polymer Binders in Improving Power Density and Cycle Life of Lithium-Sulfur Batteries},
author = {Zayat, Billal and Elizalde-Segovia, Rodrigo and Das, Pratyusha and Salamat, Charlene Z. and Irshad, Ahamed and Tolbert, Sarah H. and Thompson, Barry C. and Narayanan, S. R.},
abstractNote = {Abstract Lithium-sulfur batteries are promising as the next-generation of low-cost, high-energy rechargeable batteries. However, the commercialization of these batteries has been limited by poor rate capability and cycle life. To improve the performance of Li-S cells, we have investigated the role of two n-dopable conducting polymers, N2200 and N2200-OE, as binders for the sulfur cathode. The electron and ion transport properties of these polymer binders, along with their strong affinity for polysulfides, results in significantly enhanced performance compared to cells with the traditional insulating PVDF binder. The role of these conducting polymer binders in enhancing the performance of the cells is analyzed using impedance spectroscopy, shuttle current measurements, conductivity measurements, UV-Vis spectroscopy, GIWAXS studies, and post-cycling analysis of the anodes. The conducting polymer binders reduce the cell impedance by a factor of four, leading to a marked improvement in rate capability. The shuttling of the polysulfides and the formation of insoluble sulfides at the anode is curtailed by the interaction of the polysulfides with the backbone of the polymer binders, leading to an impressive capacity retention of 82% after 500 cycles. These studies demonstrate the benefit of tailored polymer binders at the sulfur electrode in addressing the limitations of lithium-sulfur batteries.},
doi = {10.1149/1945-7111/ac9551},
journal = {Journal of the Electrochemical Society},
number = 10,
volume = 169,
place = {United States},
year = {Wed Oct 12 00:00:00 EDT 2022},
month = {Wed Oct 12 00:00:00 EDT 2022}
}
https://doi.org/10.1149/1945-7111/ac9551
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