Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 15, Issue 11, Pages 8937-8942Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2015.11538
Keywords
Sodium Vanadium Phosphate (Na3V2(PO4)(3)); Graphene; Silver; Electrical Conductivity; Li/Na Hybrid Ion Battery
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Funding
- Industrial Strategic Technology Development Program - Ministry of Trade, Industry and Energy (MOTIE, Korea) [10045401]
- KERI Primary Research Program of MSIP/ISTK [14-12-N0101-69]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10045401] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The NASICON (sodium super ionic conductor) based Na3V2(PO4)(3)/Ag+ graphene (NVP/Ag + G) was successfully synthesized through a sol-gel route using a silver nitrate and graphene as a raw material. The effects of the physical and electrochemical properties of the NVP/Ag + G composites have been evaluated with X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, and electrochemical measurements. The graphene and Ag significantly influenced the morphology, structure and electrochemical performance of the Na3V2(PO4)(3) material. In the electrochemical measurement, the (NVP/Ag + G) electrode showed the discharge capacity of 102 nnAh g(-1) at 0.1 C rate, which was higher than the pristine Na3V2(PO4)(3). At a current rate of 5 C, it still exhibits the discharge capacity of 73 mAh g(-1) and the capacity retention of 71.6%. The results of higher electrochemical performance of the NVP/Ag+ G composites are mainly attributed to the synergetic effect of the graphene and the silver particles.
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