本文選題：超級電容器 + 靜電紡絲　； 參考：《東北師范大學(xué)》2015年碩士論文

【摘要】：近年來,一維納米結(jié)構(gòu)材料如:納米管、納米線、納米纖維等因其具有的科學(xué)研究價值以及潛在的技術(shù)應(yīng)用前景,吸引了許多科研工作者額的興趣。靜電紡絲技術(shù)以其操作簡便、成本低廉、納米纖維不易結(jié)團(tuán)等優(yōu)點,在超級電容器的電極材料制備方面擁有獨特的優(yōu)勢。作為一種新型的儲能裝置,因其自身具有的大功率,長循環(huán)壽命,高安全性,低成本等優(yōu)點,使得超級電容器在新能源、移動通訊及電子設(shè)備、電動汽車、航空航天等各個領(lǐng)域皆具有較大的開發(fā)、應(yīng)用前景。過渡族金屬氧化物,如:Ru O2、Mn O2、Ni O、Co3O4等,憑借較大的理論比容量值、能量密度高等優(yōu)勢,成為了制備電化學(xué)超級電容器的電極的理想材料。其中,貴金屬氧化物Ru O2的超電容性能最好,但因成本過高不適合進(jìn)行大規(guī)模工業(yè)化生產(chǎn)。氧化鎳則因其資源儲量豐富、價格低廉、理論容量值高等優(yōu)勢特點,引起了了研究者的注意。本文采用靜電紡絲的方法制備高比電容值Ni O納米纖維,并通過分別向Ni O納米纖維中參雜Mn O2、Pb3O4的方法改善、提高其電化學(xué)性能。具體實驗情況如下:實驗通過靜電紡絲法制備了Ni(NO3)2/PVA纖維,然后高溫400℃煅燒3小時制備得到Ni O納米纖維。測試結(jié)果說明材料的電化學(xué)性能較好,電流密度為2A/g時測得比電容達(dá)到140 F/g。采用于上述同樣的方法,分別制備得到鎳、錳物質(zhì)的量比7:3的Ni O/Mn O2復(fù)合納米纖維,鎳、鉛物質(zhì)的量比為8:2的Ni O/Pb3O4復(fù)合納米纖維;測試結(jié)果說明材料的電化學(xué)性能較好,電流密度為2 A/g時測得比電容分別250 F/g,300F/g。對比測試結(jié)果表明Ni O/Pb3O4復(fù)合納米纖維的超電容性能最好。
[Abstract]:In recent years, one-dimensional nanostructured materials such as nanotubes, nanowires and nanofibers have attracted the interest of many researchers because of their scientific research value and potential technical application prospects. Electrostatic spinning technology has unique advantages in the preparation of electrode materials for supercapacitors due to its advantages of simple operation, low cost and difficult agglomeration of nanofibers. As a new type of energy storage device, because of its high power, long cycle life, high security, low cost and other advantages, supercapacitors in new energy, mobile communications and electronic equipment, electric vehicles, Aerospace and other fields have a great development, application prospects. Transition metal oxides, such as: Ru O _ 2, mn, O _ 2, Ni, O _ (3) O _ 4 and so on, have become the ideal materials for preparing electrochemical supercapacitors by virtue of their high theoretical specific capacity and high energy density. Among them, the supercapacitor performance of precious metal oxide Ru O2 is the best, but it is not suitable for large-scale industrial production because of the high cost. Nickel oxide has attracted the attention of researchers because of its rich reserves, low price and high theoretical capacity. In this paper, high specific capacitance nio nanofibers were prepared by electrostatic spinning, and their electrochemical properties were improved by adding mn O 2 O 2 Pb 3O 4 into Ni O nanofibers respectively. The experimental results are as follows: ni (no _ 3) _ 2 / PVA fibers were prepared by electrospinning method, and then calcined at 400 鈩，

本文編號：2102895