Role of ferroelectric nanoparticles coated separator in improvement of capacity retention at high current density on sulfur/SWCNT composite cathodes for Li–S batteries
In this manuscript, we are reporting the role of ferroelectric nanoparticles (FNPs) coated separators in capacity retention at high current density (200 mA/g) on S/SWCNT composite cathodes. The ferroelectric nanoparticles of Bi0.925Gd.075Fe0.95Ni0.05O3 (BGFNO) of spontaneous polarization 2.5 µC/cm2...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2023-05-01
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| Series: | APL Materials |
| Online Access: | http://dx.doi.org/10.1063/5.0152737 |
| _version_ | 1797771774653366272 |
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| author | Rajesh K. Katiyar Claudia C. Zuluaga Gómez Swati Katiyar Balram Tripathi Gerardo Morell Brad R. Weiner Ram S. Katiyar |
| author_facet | Rajesh K. Katiyar Claudia C. Zuluaga Gómez Swati Katiyar Balram Tripathi Gerardo Morell Brad R. Weiner Ram S. Katiyar |
| author_sort | Rajesh K. Katiyar |
| collection | DOAJ |
| description | In this manuscript, we are reporting the role of ferroelectric nanoparticles (FNPs) coated separators in capacity retention at high current density (200 mA/g) on S/SWCNT composite cathodes. The ferroelectric nanoparticles of Bi0.925Gd.075Fe0.95Ni0.05O3 (BGFNO) of spontaneous polarization 2.5 µC/cm2 were coated on commercial separators (PP) as well as doped in sulfur/SWCNT composite cathodes. Our results show a discharge capacity retention of 72% by using commercial separator polypropylene (PP); however, a capacity retention improvement of more than 100% was obtained for FNPs coated separator, which has been placed on the anode side as well as on the cathode side. It is observed that the FNPs coated separator due to spontaneous polarization on the anode and cathode side acts as a repulsive charge on the separator surface to retard polysulfide migration via electrostatic repulsion and protects the surface of lithium from dendrite formation due to which it gains high capacity retention as well as stability. The coated separator controls the transport of carrier ions and side reactions; however, the FNPs doped cathode acts as an absorption center for polysulfides to enhance the electrochemical performance of the cells. The significance of this study is to design an efficient methodology, which could protect electrodes from dendrite formation via coated separator and modified cathode with the FNPs via suppressing the polysulfide formation to achieve high capacity retention and electrochemical cycle stability. |
| first_indexed | 2024-03-12T21:42:33Z |
| format | Article |
| id | doaj.art-9621d2a33b034f9c8449fdcd4cbefb3e |
| institution | Directory Open Access Journal |
| issn | 2166-532X |
| language | English |
| last_indexed | 2024-03-12T21:42:33Z |
| publishDate | 2023-05-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Materials |
| spelling | doaj.art-9621d2a33b034f9c8449fdcd4cbefb3e2023-07-26T15:44:37ZengAIP Publishing LLCAPL Materials2166-532X2023-05-01115051115051115-510.1063/5.0152737Role of ferroelectric nanoparticles coated separator in improvement of capacity retention at high current density on sulfur/SWCNT composite cathodes for Li–S batteriesRajesh K. Katiyar0Claudia C. Zuluaga Gómez1Swati Katiyar2Balram Tripathi3Gerardo Morell4Brad R. Weiner5Ram S. Katiyar6Department of Physics, University of Puerto Rico, San Juan, Puerto Rico 00925, USADepartment of Physics, University of Puerto Rico, San Juan, Puerto Rico 00925, USADepartment of Chemistry, University of Puerto Rico, San Juan, Puerto Rico 00925, USADepartment of Physics, University of Puerto Rico, San Juan, Puerto Rico 00925, USADepartment of Physics, University of Puerto Rico, San Juan, Puerto Rico 00925, USADepartment of Chemistry, University of Puerto Rico, San Juan, Puerto Rico 00925, USADepartment of Physics, University of Puerto Rico, San Juan, Puerto Rico 00925, USAIn this manuscript, we are reporting the role of ferroelectric nanoparticles (FNPs) coated separators in capacity retention at high current density (200 mA/g) on S/SWCNT composite cathodes. The ferroelectric nanoparticles of Bi0.925Gd.075Fe0.95Ni0.05O3 (BGFNO) of spontaneous polarization 2.5 µC/cm2 were coated on commercial separators (PP) as well as doped in sulfur/SWCNT composite cathodes. Our results show a discharge capacity retention of 72% by using commercial separator polypropylene (PP); however, a capacity retention improvement of more than 100% was obtained for FNPs coated separator, which has been placed on the anode side as well as on the cathode side. It is observed that the FNPs coated separator due to spontaneous polarization on the anode and cathode side acts as a repulsive charge on the separator surface to retard polysulfide migration via electrostatic repulsion and protects the surface of lithium from dendrite formation due to which it gains high capacity retention as well as stability. The coated separator controls the transport of carrier ions and side reactions; however, the FNPs doped cathode acts as an absorption center for polysulfides to enhance the electrochemical performance of the cells. The significance of this study is to design an efficient methodology, which could protect electrodes from dendrite formation via coated separator and modified cathode with the FNPs via suppressing the polysulfide formation to achieve high capacity retention and electrochemical cycle stability.http://dx.doi.org/10.1063/5.0152737 |
| spellingShingle | Rajesh K. Katiyar Claudia C. Zuluaga Gómez Swati Katiyar Balram Tripathi Gerardo Morell Brad R. Weiner Ram S. Katiyar Role of ferroelectric nanoparticles coated separator in improvement of capacity retention at high current density on sulfur/SWCNT composite cathodes for Li–S batteries APL Materials |
| title | Role of ferroelectric nanoparticles coated separator in improvement of capacity retention at high current density on sulfur/SWCNT composite cathodes for Li–S batteries |
| title_full | Role of ferroelectric nanoparticles coated separator in improvement of capacity retention at high current density on sulfur/SWCNT composite cathodes for Li–S batteries |
| title_fullStr | Role of ferroelectric nanoparticles coated separator in improvement of capacity retention at high current density on sulfur/SWCNT composite cathodes for Li–S batteries |
| title_full_unstemmed | Role of ferroelectric nanoparticles coated separator in improvement of capacity retention at high current density on sulfur/SWCNT composite cathodes for Li–S batteries |
| title_short | Role of ferroelectric nanoparticles coated separator in improvement of capacity retention at high current density on sulfur/SWCNT composite cathodes for Li–S batteries |
| title_sort | role of ferroelectric nanoparticles coated separator in improvement of capacity retention at high current density on sulfur swcnt composite cathodes for li s batteries |
| url | http://dx.doi.org/10.1063/5.0152737 |
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