关键词: NaV₆O₁₅纳米棒, 比电容, 循环性能, 碳布

Abstract: NaV₆O₁₅ is a kind of nanomaterial with superior performance and has great application prospects in the field of supercapacitors. In order to obtain an electrode system with better performance，NaV₆O₁₅ was synthesized on carbon cloth as a precursor using the hydrothermal method in this paper. The carbon cloth was annealed，and the NaV₆O₁₅ precursor on the carbon cloth was transformed into crystals of NaV₆O₁₅ nanorod with diameters ranging from 30 nm to 100 nm through lattice reconstruction，which firmly grew on each bunch of fiber filaments of the carbon cloth. X-ray diffractometer，scanning electron microscope and electrochemical workstation were used for phase、morphology and electrochemical analysis of the electrode material. The results showed that the specific capacitance was 735. 3 F/g at the current density of 0. 5 A/g，and after 3 000 cycles，its capacitance retention rate was 85%. In addition，the electrode material also had good rate performance，higher energy density and extremely low internal resistance. Its electrochemical performance is greatly improved compared to coated electrodes.

Key words: NaV₆O₁₅ nanorods, specific capacitance, cycling performance, carbon cloth