Journal
ELECTROCHIMICA ACTA
Volume 284, Issue -, Pages 418-426Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2018.07.185
Keywords
Cobalt nanofibers; Ni3S2 nanosheets; Anode materials; Electrochemical properties
Categories
Funding
- Innovation Foundation of Shanghai Aero-space Science and Technology [SAST2016114]
- Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University [CX201723]
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Cobalt nanofibers @ Ni3S2 nanosheets (Co@Ni3S2) composites with high surface area (241.67m(2)/g) were successfully synthesized via a chemical conversion route. The special nanostructure afforded sufficient space for the volume change, ensured efficient electrolyte penetration, increased contact area between electrolyte and active material during discharge-charge process. Moreover, the existence of the cobalt nanofibers with high conductivity provided a possibility for the rapid transportation of the electrons and lithium ions. The composite electrodes presented a reversible discharge capacity of 531 mAh/g with a good cyclic stability. This research perhaps inspired the designing of high performance electrode materials with a novel structure for high performance energy storage devices. (c) 2018 Elsevier Ltd. All rights reserved.
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