Pan Shanshan, Chen Ling, Li Yahao, Han Shuolin, Wang Lin, Shao Guangjie
Hebei Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University Qinhuangdao 066004 China.
State Key Laboratory of Metastable Materials Science and Technology, Yanshan University Qinhuangdao 066004 China.
RSC Adv. 2018 Jan 16;8(6):3213-3217. doi: 10.1039/c7ra12607g. eCollection 2018 Jan 12.
Orthorhombic vanadium pentoxide (VO) nanowires with uniform morphology were successfully fabricated 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 VO 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 VO nanowires demonstrate a high specific capacitance of 528.2 F g at 0.5 A g and capacitance retention of 85% after 1000 galvanostatic charge/discharge cycles at 1 A g when used as supercapacitors electrode in 0.5 M KSO.
通过简便的水热法成功制备了具有均匀形貌的正交晶系五氧化二钒（VO）纳米线。分析了柠檬酸钠用量对产物结晶度、形貌和电化学性能的影响。实验结果表明，当柠檬酸钠用量为0.236 g时，在180℃下反应24 h可得到高结晶度、直径约20 nm的正交晶系VO纳米线。此外，所制备的VO纳米线在0.5 M KSO中用作超级电容器电极时，在0.5 A g下具有528.2 F g的高比电容，在1 A g下进行1000次恒流充放电循环后电容保持率为85%。
