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Ultra-Stable Lithium-Sulfur Batteries Using Nickel Phosphide@Carbon Fabric Interlayer
- Source :
- Journal of The Electrochemical Society. 168:120513
- Publication Year :
- 2021
- Publisher :
- The Electrochemical Society, 2021.
-
Abstract
- Lithium-sulfur batteries (LSB) are highly promising candidates for next generation energy storage devices due to their high theoretical capacity and the low cost of sulfur. However, dissolution of lithium polysulfides (LPS) into electrolyte causes undesirable effects, resulting in loss of active materials, low Coulombic efficiency, and fast capacity fading. To address these issues, designed interlayers are inserted between a separator and S cathode to evaluate the effect of blocking of long chain LPS and catalytic conversion of LPS to Li2S2/Li2S on battery performance. In order to amplify the effect of interlayer, the Ni2P nanoparticles are electrochemically deposited on carbon fabric (CF) which exhibit excellent adsorption and conversion effect of LPS. A cell fabricated with the Ni2P@CF interlayer allows remarkable improvement in the capacity decay of 0.04% per cycle at 1C for 1000 cycles and outstanding high rate capability. The cell delivered a capacity retention of 64% employing a current density of 8 C.
- Subjects :
- Materials science
Renewable Energy, Sustainability and the Environment
Phosphide
chemistry.chemical_element
Condensed Matter Physics
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
chemistry.chemical_compound
Nickel
Chemical engineering
chemistry
Materials Chemistry
Electrochemistry
Lithium sulfur
Subjects
Details
- ISSN :
- 19457111 and 00134651
- Volume :
- 168
- Database :
- OpenAIRE
- Journal :
- Journal of The Electrochemical Society
- Accession number :
- edsair.doi...........40a305d78b9d8b99387b0df79a077b86