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Remarkable High-temperature Performance of Hollow Co9S8 Nanoparticles Integrated with Carbon Materials for Lithium-ion Batteries.
- Source :
-
Electrochimica Acta . Oct2017, Vol. 250, p196-202. 7p. - Publication Year :
- 2017
-
Abstract
- A solution-based “hot-injection” approach was developed to synthesize amorphous carbon-decorated and graphene-anchored hollow Co 9 S 8 nanoparticles as anode material for Li ion battery application. Such a rationally designed dually-protected structure could effectively accommodate the volume expansion of Co 9 S 8 nanoparticles during Li-cycling. As a result, as-synthesized nanocomposites could be successfully operated under ultrawide temperature window of −20 °C–70 °C, rendering excellent electrochemical performances, i.e., remarkable reversible capacities of 910 mA h g −1 after 100 cycles (at 500 mA g −1 ) and 622 mA h g −1 after 200 cycles (at 1000 mA g −1 ) at 70 °C. These attributes enable three-dimensional structured Co 9 S 8 nanoparticles to be promising anode materials of advanced Li-ion batteries for large-power applications such as electric vehicles under extreme temperature environments. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00134686
- Volume :
- 250
- Database :
- Academic Search Index
- Journal :
- Electrochimica Acta
- Publication Type :
- Academic Journal
- Accession number :
- 125856625
- Full Text :
- https://doi.org/10.1016/j.electacta.2017.08.019