CuV2O6 nanowires were prepared via a simple hydrothermal route using NH4VO3 and Cu（NO3）2 as starting materials. The structures and electrochemical properties of CuV2O6 nanowires were characterized by means of X-ray...CuV2O6 nanowires were prepared via a simple hydrothermal route using NH4VO3 and Cu（NO3）2 as starting materials. The structures and electrochemical properties of CuV2O6 nanowires were characterized by means of X-ray diffraction（XRD）, scanning electron microscopy（SEM） and transmission electron microscopy（TEM）. The results show that the CuV2O6 nanowires are about 100 nm in width and single crystalline grown along [001] direction. CuV2O6 nanowires delivered a high initial discharge capacity of 435 and 351 mA·h/g at current densities of 50 and 100 mA·h/g, respectively. The electrochemical kinetics of the CuV2O6 nanowires was also investigated by means of electrochemical impedance spectroscopy（EIS） and the poor rate performance was observed, which may be attributed to the low ion diffusion coefficient of the CuV2O6 nanowires.展开更多
The influences of the PbO-B2O3-CuV2O6 （PBC） additives on the microwave dielectric properties of （Pb0.5Ca0.5） （Fe0.5Nb0.5）O3 （PCFN） ceramics were investigated as a function of sintering temperature from 950 ℃ ...The influences of the PbO-B2O3-CuV2O6 （PBC） additives on the microwave dielectric properties of （Pb0.5Ca0.5） （Fe0.5Nb0.5）O3 （PCFN） ceramics were investigated as a function of sintering temperature from 950 ℃ to 1 100 ℃. The sintering temperature of the specimens with the glass could be lowered from 1125 ℃ to 1 025℃ without the degradation of microwave dielectric properties. The microwave results showed that the dielectric constant cr was not significantly different while Qf values decreased with the increase of CuV206 content of PBC glass. For the specimens doped with PB-CV0.1 glass （81% PbO-9% B203-10% CuV2O6） and sintered at 1 025 ℃ for 3 h, the microwave dielectric properties of Qf=4 823 GHz, Cr=107.1 with TCF=＋15.03 ×10^-6/℃ were obtained.展开更多
基金Supported by the National Basic Research Program of China（No.2015CB251103）, the National Natural Science Foundation of China（No. 51472104） and the Development Program of Science and Technology of Jilin Province, China（No.20140101093 JC）.
文摘CuV2O6 nanowires were prepared via a simple hydrothermal route using NH4VO3 and Cu（NO3）2 as starting materials. The structures and electrochemical properties of CuV2O6 nanowires were characterized by means of X-ray diffraction（XRD）, scanning electron microscopy（SEM） and transmission electron microscopy（TEM）. The results show that the CuV2O6 nanowires are about 100 nm in width and single crystalline grown along [001] direction. CuV2O6 nanowires delivered a high initial discharge capacity of 435 and 351 mA·h/g at current densities of 50 and 100 mA·h/g, respectively. The electrochemical kinetics of the CuV2O6 nanowires was also investigated by means of electrochemical impedance spectroscopy（EIS） and the poor rate performance was observed, which may be attributed to the low ion diffusion coefficient of the CuV2O6 nanowires.
基金Project supported by the National Natural Science Foundation of China (Grant No.60578041)the National High Tech-nology Research and Development Program of China (Grant No.715-006-0060)
文摘The influences of the PbO-B2O3-CuV2O6 （PBC） additives on the microwave dielectric properties of （Pb0.5Ca0.5） （Fe0.5Nb0.5）O3 （PCFN） ceramics were investigated as a function of sintering temperature from 950 ℃ to 1 100 ℃. The sintering temperature of the specimens with the glass could be lowered from 1125 ℃ to 1 025℃ without the degradation of microwave dielectric properties. The microwave results showed that the dielectric constant cr was not significantly different while Qf values decreased with the increase of CuV206 content of PBC glass. For the specimens doped with PB-CV0.1 glass （81% PbO-9% B203-10% CuV2O6） and sintered at 1 025 ℃ for 3 h, the microwave dielectric properties of Qf=4 823 GHz, Cr=107.1 with TCF=＋15.03 ×10^-6/℃ were obtained.
