Journal
MATERIALS & DESIGN
Volume 160, Issue -, Pages 636-641Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2018.10.011
Keywords
Composite; Lithium ion battery; ZnS
Categories
Funding
- National Natural Science Foundation Committee of China Academy of Engineering Physics (NSAF) [U1630108]
- National Key Research and Development Program of China [2017YFA0402902]
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Composites are usually better than a single material because they combine advantages of their component materials and, as a result, achieve better performance. Using a high temperature sulfuration process, a Co1-xS/ZnS@C composite was successfully synthesized by using a 3D disordered polystyrene spheres ( PS) template coated on metal-organic framework (ZIF) precursor. The Co1-xS/ZnS in the composite was firmly encapsulated by C that came from the 3D disordered PS template. The carbon can efficiently reduce the volume expansion triggered by metal sulfide particles during the charge/discharge process. Furthermore, due to a synergistic effect between the composite's components, the Co1-xS/ZnS@C composite displays better cycling performance and rate capacity compared to Co1-xS@C and ZnS@C. The Co1-xS/ZnS@C composite electrode showed a higher stable capacity of similar to 586 mAh g(-1) after similar to 100 cycles with a current density is 0.3 A/g and it also exhibited a more excellent rate capability compare with Co1-xS@C and ZnS@C. (c) (C) 2018 Elsevier Ltd. All rights reserved.
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