4.7 Article

Intercalation pseudocapacitance in ZnS@C sheets composites for enhanced electrochemical energy storage

Journal

JOURNAL OF ENERGY STORAGE
Volume 39, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.est.2021.102611

Keywords

Zinc sulfide composites; Intercalation pseudocapacitance; Lithium ion storage; Anode material

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Funding

  1. National Natural Science Foundation of China [21801111, 21771097]
  2. Key Scientific Research Projects of Higher Education of Henan Province [19A150034]

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ZnS@C sheets composites exhibit remarkable electrochemical performance, excellent rate capability, and long cycle life in lithium ion storage devices, with a capacity retention of 98% after 100 cycles.
Transitional metal chalcogenides have been considered as promising high-performance electrode materials for lithium ion energy storage devices. Herein, the detailed study of ZnS@C sheets composites on lithium ion intercalation pseudocapacitance performance was presented, which exhibited remarkable electrochemical performance with excellent rate capability and long cycle life. ZnS@C sheets composites were synthesized based on a facile strategy through calcine of hexanuclear zinc clusters. These composites served as promising anodic materials hold favourable reversible capacity of 692.2 mAh g(-1) at 0.05 A g(-1) and 529 mAh g(-1) at 1.0 A g(-1) for lithium storage device, which exhibited promising in alkali-ion energy storage. Furthermore, the capacity retention is maintained at 98% after 100 cycles, showing a desirable operational stability. Depending on the intercalation pseudocapacitance mechanism, it provides more insights into the development of anodic electrode materials for alkali-ion storage battery with high reversible rate capability and long cycling durability.

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