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Integration of adsorption and catalytic active sites in cobalt iron oxide nanorods for an excellent performance Li–S battery with a wide temperature range
- Source :
- Sustainable Energy & Fuels. 5:4284-4288
- Publication Year :
- 2021
- Publisher :
- Royal Society of Chemistry (RSC), 2021.
-
Abstract
- Whether Li–S batteries can be worked in a wider temperature range is particularly important. Here, we report micro/nanostructure CoFe2O4 rods combining both catalytic sites (Co) and adsorption sites (Fe). Under the synergistic enhancement of these two different sites, the conversion rate of polysulfides in Li–S batteries is greatly accelerated, and the “shuttle effect” is effectively suppressed. When used as the host material for Li–S batteries, the capacity, rate performance and cycling stability are promoted greatly. Most importantly, the cell achieves an excellent electrochemical performance at high temperatures. After 1000 cycles, the Li–S battery using CoFe2O4 nanorods as the cathode exhibits a high reversible capacity of about 700 mA h g−1 at a high temperature of 70 °C with a capacity attenuation of less than 0.02% per cycle. Meanwhile, the battery also shows excellent performance at −20 °C owing to the high catalytic activity.
- Subjects :
- Battery (electricity)
Materials science
Renewable Energy, Sustainability and the Environment
Iron oxide
Energy Engineering and Power Technology
chemistry.chemical_element
02 engineering and technology
Atmospheric temperature range
010402 general chemistry
021001 nanoscience & nanotechnology
Electrochemistry
01 natural sciences
0104 chemical sciences
Catalysis
chemistry.chemical_compound
Fuel Technology
Adsorption
chemistry
Chemical engineering
Nanorod
0210 nano-technology
Cobalt
Subjects
Details
- ISSN :
- 23984902
- Volume :
- 5
- Database :
- OpenAIRE
- Journal :
- Sustainable Energy & Fuels
- Accession number :
- edsair.doi...........b58fd6c729d47b74c68c92ca06b4214c