1. Porous graphene anchored with Sb/SbOx as sodium-ion battery anode with enhanced reversible capacity and cycle performance.
- Author
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Wang, Gui-Zhi, Feng, Jian-Min, Dong, Lei, Li, Xi-Fei, and Li, De-Jun
- Subjects
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POROUS materials , *GRAPHENE , *ANTIMONY , *OXIDES , *SODIUM ions , *STORAGE batteries , *ANODES , *ELECTRIC capacity - Abstract
Nanocomposites of porous graphene anchored with Sb/SbO x nanoparticles were synthesized through a two-step wet chemical process. SbO x /graphene was initially prepared by refluxing SbCl 3 and graphene oxide in benzyl alcohol. Subsequently, the SbO x nanoparticles were partially reduced by NaBH 4 . The nanocomposites exhibited an enhanced performance for sodium-ion battery with a stable sodium-ion storage capacity of 311.6 mAh g −1 at 50 mA g −1 after 100 cycles and a rate capability of 205.6 mAh g −1 at 800 mA g −1 . Reduction of SbO x by adding moderate amount of NaBH 4 was conducive in improving the nanocomposite's electrochemical performance. The sodium-ion storage capacity of Sb/SbO x /graphene material was 1.4 times higher than that of SbO x /graphene without NaBH 4 and 6.2 times higher than that of Sb/graphene with excessive amount of NaBH 4 . [ABSTRACT FROM AUTHOR]
- Published
- 2017
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