【摘要】：隨著社會的進(jìn)步，人類對能源的需求飛速增長。目前常見的能量存儲器件主要包括電池和電容器兩種，而超級電容器又稱為電化學(xué)電容器，是介于傳統(tǒng)電容器和電池之間的新型電化學(xué)儲能器件，具有比充電電池高的功率密度、比傳統(tǒng)電容器高的能量密度特性。雖然超級電容器充放電速度快、循環(huán)壽命長和環(huán)境友好，但是如何獲得更高的能量密度，同時(shí)保持優(yōu)異的循環(huán)穩(wěn)定性和低的生產(chǎn)成本成為超級電容器進(jìn)一步發(fā)展所面臨的挑戰(zhàn)。本論文的工作圍繞著提高電容器比電容和拓寬工作電位窗口兩方面展開。首先我們從決定電容器性能的關(guān)鍵因素—電極材料入手，創(chuàng)新性地采用等離子體增強(qiáng)化學(xué)氣相沉積結(jié)合電沉積方法制備了電化學(xué)性能優(yōu)異的氫氧化鈷/石墨烯納米片（GNS）復(fù)合電極材料；探究了碳納米材料的形貌、結(jié)晶度對氫氧化鈷贗電容性能的影響機(jī)制；構(gòu)建了新型的正負(fù)電極體系：正電極體系Co(OH)2/GNS-KOH/K3Fe(CN)6，負(fù)電極體系A(chǔ)C/碳紙-KOH/PPD，，新型的電極體系實(shí)現(xiàn)了高的比電容和優(yōu)異的循環(huán)穩(wěn)定性；將Co(OH)2/GNS-KOH/K3Fe(CN)6和AC/碳紙-KOH/PPD分別作為正負(fù)極并加以匹配，組裝成新型的非對稱式超級電容器，實(shí)現(xiàn)了高的比電容和寬的工作電位窗口，并探討和研究了單體性質(zhì)。
[Abstract]:With the progress of society, the demand for energy is increasing rapidly. At present, the common energy storage devices mainly include batteries and capacitors, and supercapacitors, also called electrochemical capacitors, are new electrochemical energy storage devices between conventional capacitors and batteries. It has higher power density than rechargeable battery and higher energy density than traditional capacitor. Although supercapacitors have high charge and discharge speed, long cycle life and environmental friendliness, how to obtain higher energy density, while maintaining excellent cycle stability and low production cost, has become a challenge for the further development of supercapacitors. The work of this paper is focused on improving the capacitance of capacitors and widening the working potential window. First of all, we start with the key factor that determines the performance of capacitors-electrode materials. The cobalt hydroxide / graphene nanochip (GNS) composite electrode materials with excellent electrochemical properties were prepared by plasma enhanced chemical vapor deposition (PCVD) combined with electrodeposition. The mechanism of the effect of crystallinity on the properties of cobalt hydroxide pseudo-capacitance was studied, and a new type of positive and negative electrode system was constructed: the positive electrode system Co (OH) 2/GNS-KOH/K3Fe (CN) 6, the negative electrode system AC/ carbon paper-new type electrode system realized high specific capacitance and excellent cycle stability. Co (OH) 2/GNS-KOH/K3Fe (CN) 6 and AC/ carbon paper-KOH/PPD were used as positive and negative electrodes respectively to assemble new asymmetric supercapacitors to realize high specific capacitance and wide working potential window. The properties of monomers were discussed and studied.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2014
【分類號】：TM53;TB383.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前4條

1 鐘海云,李薦,戴艷陽,李慶奎;新型能源器件——超級電容器研究發(fā)展最新動態(tài)[J];電源技術(shù);2001年05期

2 李方;史軍軍;秦學(xué);;PANI/CNTs復(fù)合材料的合成及其超級電容器性能研究[J];科學(xué)通報(bào);2009年24期

3 孫現(xiàn)眾;張熊;張大成;馬衍偉;;活性炭基Li_2SO_4水系電解液超級電容器[J];物理化學(xué)學(xué)報(bào);2012年02期

4 黃博;孫現(xiàn)眾;張熊;張大成;馬衍偉;;活性炭基軟包裝超級電容器用有機(jī)電解液[J];物理化學(xué)學(xué)報(bào);2013年09期

相關(guān)博士學(xué)位論文 前1條

1 翟登云;高能量密度超級電容器的電極材料研究[D];清華大學(xué);2011年

本文編號：2288448