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Na(+)/K(+) Hybrid Battery Based on a Sulfurized Polyacrylonitrile Cathode
Sulfurized polyacrylonitrile (SPAN) nanocomposites were synthesized and used as a cathode in a novel rechargeable Na(+)/K(+) hybrid battery with high performance for the first time. When 0.9 mol NaPF(6) and 0.1 mol KPF(6) were dissolved in ethylene carbonate (EC)/dimethyl carbonate(DMC)/ethyl methyl...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6471567/ https://www.ncbi.nlm.nih.gov/pubmed/30909540 http://dx.doi.org/10.3390/ma12060969 |
Sumario: | Sulfurized polyacrylonitrile (SPAN) nanocomposites were synthesized and used as a cathode in a novel rechargeable Na(+)/K(+) hybrid battery with high performance for the first time. When 0.9 mol NaPF(6) and 0.1 mol KPF(6) were dissolved in ethylene carbonate (EC)/dimethyl carbonate(DMC)/ethyl methyl cabonate(EMC) (4:3:2, v/v/v), used as hybrid electrolyte, Na foil was used as the anode, and SPAN composites were used as the cathode, a hybrid ion system was created via composition–decomposition between Na(+)/K(+) and SPAN and stripping–depositing of Na(+) with suppressed dendrites by taking advantage of the self-healing electrostatic shield effect. As a result, a highly reversible calculated capacity of 1405.5 mAh g(sulfur)(−1) with a coulombic efficiency approaching 100% after 100 cycles was obtained at a current density of 35 mA g(−1). This environmentally benign, low-cost Na(+)/K(+) hybrid battery shows promise as a new future flexible energy storage system (ESS) technology. |
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