水热法合成多孔co(oh)2薄膜在超级电容器上的应用_外文翻译.zip

翻译文献共8页 英翻中
Hydrothermal synthesized porous Co(OH)2 nanoflake film for supercapacitor application
Porous Co(OH)2 film directly grown on nickel foam is prepared by a facile hydrothermal method. The as-prepared Co(OH)2 film possesses a structure consisting of randomly porous nanoflakes with thicknesses of 20–30 nm. The capacitive behavior of the Co(OH)2 film is investigated by cyclic voltammograms and galvanostatic charge-discharge tests in 2 mol/L KOH. The porous Co(OH)2 film exhibits a high discharge capacitance of 935 F g-1 at a current density of 2 A g-1 and excellent rate capability. The specific capacitance keeps a capacitance of 589 F g-1 when the current density increases to 40 A g-1. The specific capacitance of 82.6% is maintained after 1500 cycles at 2 A g-1.

多孔的Co(OH)2是通过一种简单的的水热法直接生长在泡沫镍上。制备好的Co(OH)2薄膜Co(OH)2样品具有无方向性多孔纳米片结构，纳米片厚度为20-30nm。Co(OH)2的电容特性是通过在2 mol/L KOH电解液下的循环伏安曲线和恒流充放电测试来研究的。多孔的Co(OH)2薄膜在 2 A /g的电流密度下的放电电容为935 F /g，表现出很高的大电流放电能力。这种特有的电容性保持着589 F/g-1的电容当电流密度增大到40A/g。在2 A /g下经过1500次循环后保持着82.6%的比电容。