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3D MoS2–Graphene Microspheres Consisting of Multiple Nanospheres with Superior Sodium Ion Storage Properties

Choi, Seung Ho, Ko, You Na, Lee, Jung‐Kul, Kang, Yun Chan·2015·Advanced Functional Materials

Abstract

A novel anode material for sodium‐ion batteries consisting of 3D graphene microspheres divided into several tens of uniform nanospheres coated with few‐layered MoS 2 by a one‐pot spray pyrolysis process is prepared. The first discharge/charge capacities of the composite microspheres are 797 and 573 mA h g−1 at a current density of 0.2 A g−1. The 600th discharge capacity of the composite microspheres at a current density of 1.5 A g−1 is 322 mA h g−1. The Coulombic efficiency during the 600 cycles is as high as 99.98%. The outstanding Na ion storage properties of the 3D MoS 2–graphene composite microspheres may be attributed to the reduced stacking of the MoS 2 layers and to the 3D structure of the porous graphene microspheres. The reduced stacking of the MoS 2 layers relaxes the strain and lowers the barrier for Na+ insertion. The empty nanospheres of the graphene offer voids for volume expansion and pathways for fast electron transfer during repeated cycling.

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Metadata

Authors
Choi, S. H., Ko, Y. N., Lee, J., & Kang, Y. C.
Venue
Advanced Functional Materials
Publisher
Wiley
Published
2015-02-03
Volume
25
Issue
12
Pages
1780-1788
ISSN
  • 1616-301X (ISSN-L)
  • 1616-3028
OpenAlex
W2075512376
Cited by
515
References
4
FWCI
42.18
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: 3D MoS2–Graphene Microspheres Consisting of Multiple Nanospheres with Superior Sodium Ion Storage Properties. https://app.cochat.ai/papers/10.1002/adfm.201402428
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Choi, S. H., Ko, Y. N., Lee, J., & Kang, Y. C. (2015). 3D MoS2–Graphene Microspheres Consisting of Multiple Nanospheres with Superior Sodium Ion Storage Properties. Advanced Functional Materials. https://doi.org/10.1002/adfm.201402428

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