Disodium citrate-assisted hydrothermal synthesis of V2O5 nanowires for high performance supercapacitors

Shanshan Pan; Ling Chen; Yahao Li; Shuolin Han; Lin Wang; Guangjie Shao

doi:10.1039/c7ra12607g

Disodium citrate-assisted hydrothermal synthesis of V₂O₅ nanowires for high performance supercapacitors

RSC Adv. 2018 Jan 16;8(6):3213-3217. doi: 10.1039/c7ra12607g. eCollection 2018 Jan 12.

Authors

Shanshan Pan¹, Ling Chen¹, Yahao Li¹, Shuolin Han¹, Lin Wang¹, Guangjie Shao^{1

2}

Affiliations

¹ Hebei Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University Qinhuangdao 066004 China.
² State Key Laboratory of Metastable Materials Science and Technology, Yanshan University Qinhuangdao 066004 China.

Abstract

Orthorhombic vanadium pentoxide (V₂O₅) nanowires with uniform morphology were successfully fabricated via a facile hydrothermal process. The effect of disodium citrate dosage on the crystallinity, morphology and electrochemical properties of the products was analyzed. Experimental results indicate that orthorhombic V₂O₅ nanowires with high crystallinity and diameter of about 20 nm can be obtained at 180 °C for 24 h when the dosage of disodium citrate is 0.236 g. Furthermore, the prepared V₂O₅ nanowires demonstrate a high specific capacitance of 528.2 F g^-1 at 0.5 A g^-1 and capacitance retention of 85% after 1000 galvanostatic charge/discharge cycles at 1 A g^-1 when used as supercapacitors electrode in 0.5 M K₂SO₄.