發(fā)布時間：2018-05-29 02:01

  本文選題：石墨烯 + 石墨烯納米層狀結(jié)構(gòu)��； 參考：《蘇州大學(xué)》2015年博士論文

【摘要】：隨著信息科學(xué)、材料科學(xué)和紡織工程等多個學(xué)科的飛速發(fā)展以及人們對生活服裝、實(shí)用織物的要求越來越高,電子織物的發(fā)展正好迎合了這種需求。將紡織品與電子真正意義上的融合是促進(jìn)和發(fā)展電子織物的當(dāng)務(wù)之急,因此研發(fā)纖維狀外形電子器件和能量存儲器件顯得更為迫切。進(jìn)入新世紀(jì),能源緊缺沖擊著全球經(jīng)濟(jì)運(yùn)行和人們的日常生活,發(fā)展清潔高效綠色環(huán)保的清潔能源越來越引起人們的關(guān)注,而超級電容被認(rèn)為是能量儲存領(lǐng)域的一項(xiàng)革命性發(fā)展。發(fā)展具有高能量密度、功率密度、輕便的柔性纖維儲能器件具有非同一般的意義,因此柔性纖維超級電容將是最理想的選擇。同時,由于石墨烯作為一種新型的納米二維材料,其優(yōu)異的物理特性被認(rèn)為是理想的碳基超級電容電極材料,很多研究人員已經(jīng)利用石墨烯制備出大容量高效的平板式超級電容,但是石墨烯尚未被應(yīng)用到柔性纖維狀超級電容器。本文以氧化石墨烯材料為基礎(chǔ),采用電泳沉積的方法,制備了三種不同的基于石墨烯納米結(jié)構(gòu)的柔性纖維電極,并對其進(jìn)行了表征與電化學(xué)測試,主要內(nèi)容包括以下幾個方面:(1)制備得到了性能優(yōu)異的氧化石墨烯片、尺度均一的納米碳球,為后續(xù)實(shí)驗(yàn)奠定了基礎(chǔ);并探討了石墨烯化學(xué)還原法和熱還原法在本實(shí)驗(yàn)過程中的優(yōu)劣;(2)采用電泳沉積的方法,采用不同的氧化石墨烯還原法制備得到具有石墨烯納米層狀結(jié)構(gòu)的柔性纖維電極,通過對電極的電化學(xué)性能測試,電極具有一定的超級電容性能,但是電極的石墨烯片層的堆疊現(xiàn)象和熱還原過程中出現(xiàn)的石墨烯重新石墨化影響了電極的性能;(3)為解決(2)中出現(xiàn)的問題,采用電泳沉積的方法,通過熱還原的方式,制備得到石墨烯泡沫柔性纖維電極,電極性能并沒有設(shè)想中的優(yōu)異性能,其性能甚至都無法與純石墨烯電極進(jìn)行比較;(4)通過HI還原石墨烯,采用電泳沉積法制備得到石墨烯碳球多孔層狀納米結(jié)構(gòu)柔性纖維電極,通過在石墨烯層狀納米結(jié)構(gòu)中引入納米碳球,制備得到的電極具有最為優(yōu)異的電化學(xué)性能;(5)對以上三種電極進(jìn)行交流阻抗譜擬合,結(jié)合實(shí)驗(yàn)數(shù)據(jù)和擬合數(shù)據(jù),對實(shí)驗(yàn)方法和材料結(jié)構(gòu)進(jìn)行分析總結(jié),用理論的方法證實(shí)采用HI還原石墨烯得到的石墨烯碳球纖維電極具有最為優(yōu)異的電化學(xué)性能;(6)采用石墨烯碳球多孔納米層狀結(jié)構(gòu)纖維電極,制備柔性纖維超級電容,并測試其電化學(xué)性能,取得的了53.6 mF cm-2的優(yōu)異超級電容性能。本論文通過對石墨烯的制備方法分析及其結(jié)合本實(shí)驗(yàn)的特點(diǎn),我們采用電泳沉積法制備了基于石墨烯不同納米結(jié)構(gòu)的柔性纖維電極,對電極進(jìn)行表征與測試,結(jié)合擬合數(shù)據(jù),認(rèn)為通過HI酸還原得到的具有石墨烯-碳球多孔層狀納米結(jié)構(gòu)柔性纖維電極的性能最為理想,并成功的組裝了柔性纖維狀超級電容器。
[Abstract]:With the rapid development of many subjects, such as information science, material science and textile engineering, as well as the higher and higher demand for life clothing and practical fabric, the development of electronic fabric meets this demand. The integration of textiles and electronics is an urgent task to promote and develop electronic fabrics, so it is more urgent to develop fibre-shaped electronic devices and energy storage devices. In the new century, energy shortage is impacting the global economic operation and people's daily life. The development of clean energy, which is clean and efficient, green and environmental protection, has attracted more and more people's attention. Supercapacitors are considered a revolutionary development in the field of energy storage. The development of flexible fiber energy storage devices with high energy density, power density and portability is of great significance, so flexible fiber supercapacitors will be the ideal choice. At the same time, graphene is considered as an ideal carbon based super capacitor electrode because of its excellent physical properties as a new nano-2D material. Many researchers have used graphene to produce large-capacity and efficient flat-panel super capacitors, but graphene has not yet been applied to flexible fiber supercapacitors. Based on graphene oxide, three kinds of flexible fiber electrodes based on graphene nanostructure were prepared by electrophoretic deposition. The main contents are as follows: (1) the graphene oxide (graphene oxide) with uniform size was prepared, which laid the foundation for further experiments. The advantages and disadvantages of graphene chemical reduction method and thermal reduction method in this experiment were discussed. Flexible fiber electrodes with graphene nanolayered structure were prepared by electrophoretic deposition and different graphene oxide reduction methods. By testing the electrochemical performance of the electrode, the electrode has a certain super capacitor performance. However, the stacking phenomenon of graphene layer of the electrode and the regraphitization of graphene in the process of thermal reduction affect the performance of the electrode. The graphene foam flexible fiber electrode was prepared. The electrode performance was not as good as envisaged, and the performance of the electrode could not even be compared with that of pure graphene electrode. Flexible fiber electrodes with porous layered graphene carbon spheres were prepared by electrophoretic deposition. The prepared electrode has the most excellent electrochemical performance. The above three kinds of electrodes are fitted by AC impedance spectroscopy. The experimental method and material structure are analyzed and summarized by combining the experimental data and the fitting data. The theoretical method is used to prove that the graphene carbon spheroidal fiber electrode obtained by HI reduction of graphene has the most excellent electrochemical performance. The flexible fiber supercapacitor is prepared by using graphene carbon ball porous nanolayered fiber electrode. The excellent super capacitor performance of 53.6 MF cm-2 was obtained by testing its electrochemical performance. Based on the analysis of the preparation methods of graphene and the characteristics of this experiment, flexible fiber electrodes based on different nanostructures of graphene were prepared by electrophoretic deposition. The electrodes were characterized and tested, and the fitting data were combined. It is considered that the flexible fiber electrode with graphene carbon spheroidal layered nanostructure prepared by HI acid reduction is the most ideal and the flexible fiber supercapacitor is successfully assembled.
【學(xué)位授予單位】：蘇州大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2015
【分類號】：TQ127.11;TM53

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 Chris Glaser;;用于可穿戴設(shè)備的超低功耗系統(tǒng)[J];今日電子;2015年04期

2 周曉航;方鯤;李玫;;國內(nèi)外超級電容器的研究發(fā)展現(xiàn)狀[J];新材料產(chǎn)業(yè);2015年03期

3 薛詩靜;高帥鋒;周平;;可穿戴式心電監(jiān)護(hù)系統(tǒng)設(shè)計及實(shí)現(xiàn)[J];中國醫(yī)療設(shè)備;2015年01期

4 石榮;;可穿戴電子信息對抗設(shè)備的概念與應(yīng)用淺析[J];電子信息對抗技術(shù);2015年01期

5 盧忠花;王卿璞;魯海瑞;袁帥;王丹丹;;柔性可穿戴電子的新進(jìn)展[J];微納電子技術(shù);2014年11期

6 丹璐;;智能手機(jī)嫁接可穿戴電子設(shè)備[J];集成電路應(yīng)用;2014年11期

7 閆文龍;付成偉;;電動汽車運(yùn)行模擬以及超級電容能量回收系統(tǒng)設(shè)計[J];現(xiàn)代電子技術(shù);2014年21期

8 王瑩;孫俊杰;葉雷;;可穿戴傳感器的特點(diǎn)與趨勢[J];電子產(chǎn)品世界;2014年10期

9 廖川平;;超級電容電池[J];化學(xué)通報;2014年09期

10 許志遠(yuǎn);;可穿戴設(shè)備的關(guān)鍵技術(shù)趨勢[J];中國信息化;2014年17期

相關(guān)博士學(xué)位論文 前1條

1 張偉;基于葡萄糖水熱法制備功能性納米材料及其應(yīng)用的研究[D];天津大學(xué);2012年

相關(guān)碩士學(xué)位論文 前1條

1 張方;超級電容器用過渡金屬氧化物及其復(fù)合物的研究[D];南京航空航天大學(xué);2012年

，

本文編號：1949064