本文選題：水熱法　切入點(diǎn)：WO_3薄膜　出處：《東華大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：電致變色材料是指在外加電壓的作用下可以實(shí)現(xiàn)光學(xué)性質(zhì)可逆變化的一類材料。電致變色器件是由電致變色材料、電解質(zhì)和對(duì)電極組成的,其在智能窗、顯示和汽車反光鏡等領(lǐng)域的應(yīng)用具有重要意義。智能窗不僅可以提升傳統(tǒng)玻璃窗的美觀度,還可以通過控制玻璃窗兩側(cè)光透過率而起到節(jié)能作用。單電極的電致變色材料往往具有其無(wú)法克服的缺點(diǎn),而復(fù)合電致變色材料卻可以弱化單一材料的缺點(diǎn),實(shí)現(xiàn)材料優(yōu)勢(shì)的累加,因此復(fù)合電致變色材料已成為電致變色材料最活躍的研究領(lǐng)域之一。相比于單電極電致變色器件,互補(bǔ)型電致變色器件可以實(shí)現(xiàn)陰極和陽(yáng)極電致變色材料之間電荷轉(zhuǎn)移平衡,從而可以得到更好的電致變色性能,在智能窗和顯示等方面具有的實(shí)際應(yīng)用價(jià)值。本論文以陰極和陽(yáng)極電致變色材料復(fù)合薄膜的制備及組裝互補(bǔ)型器件為研究對(duì)象,主要開展了以下三個(gè)方面的工作:(1)以乙二醇作為結(jié)構(gòu)導(dǎo)向劑,采用水熱法,在FTO導(dǎo)電玻璃上制備出具有架狀結(jié)構(gòu)的WO_3?0.33H_2O薄膜。這種結(jié)構(gòu)可以顯著增大電致變色層與電解液的接觸面積,從而大大縮短了離子的遷移路徑,提高離子傳輸效率。按照(PEDOT:PSS):乙醇=1:2的比例將(PEDOT:PSS)稀釋,采用旋涂法將稀釋液負(fù)載到WO_3?0.33H_2O薄膜上。對(duì)WO_3?0.33H_2O薄膜和WO_3?0.33H_2O/PEDOT:PSS復(fù)合電致變色薄膜分別進(jìn)行電化學(xué)性能測(cè)試,相比于單層WO_3?0.33H_2O薄膜,含PEDOT:PSS的薄膜的陽(yáng)極電流密度增大了45%,陰極電流密度增大16%,呈現(xiàn)出更快地離子擴(kuò)散速率。對(duì)其組裝的電致變色器件進(jìn)行電致變色性能測(cè)試發(fā)現(xiàn),含PEDOT:PSS復(fù)合電極的光調(diào)制范圍與響應(yīng)速度等方面都有明顯的提高與優(yōu)化。(2)通過水熱法在FTO導(dǎo)電玻璃上制備了NiO電致變色薄膜。以硫酸銨作為結(jié)構(gòu)導(dǎo)向劑,制得的NiO薄膜呈直立生長(zhǎng)的片狀結(jié)構(gòu)。垂直生長(zhǎng)的納米片交錯(cuò)連接形成多孔洞結(jié)構(gòu),這種獨(dú)特的結(jié)構(gòu)為電致變色離子傳輸過程提供了較大的反應(yīng)活性面積。采用電沉積的方法在NiO薄膜上復(fù)合一層PB,制得NiO/PB復(fù)合薄膜。將單層的NiO薄膜電極和NiO/PB薄膜電極分別組裝器件,測(cè)試器件的電致變色性能。與單層的NiO薄膜器件相比,復(fù)合薄膜組裝的器件光調(diào)制范圍和著色效率等都有顯著的提高。(3)為了測(cè)試復(fù)合電致變色薄膜的電致變色性能,對(duì)薄膜進(jìn)行了器件封裝,分別為glass/FTO/WO_3?0.33H_2O/PEDOT:PSS/LiClO_4-PC/PB/NiO/FTO/glass,glass/FTO/WO_3?0.33H_2O/LiClO_4-PC/NiO/FTO/glass,并分別研究了器件的電致變色性能。結(jié)果顯示,復(fù)合電極的互補(bǔ)型電致變色器件具有卓越的電致變色性能,其光調(diào)制范圍可以達(dá)到52%(700 nm),著色和褪色時(shí)間分別為6 s和7.5 s,著色效率可以達(dá)到121 cm2/C。復(fù)合電極互補(bǔ)型電致變色器件在實(shí)際應(yīng)用方面具有更好的發(fā)展前景。
[Abstract]:Electrochromic material is a kind of material which can realize the reversible change of optical property under the action of applied voltage. The electrochromic device is composed of electrochromic material, electrolyte and opposite electrode. Applications in fields such as display and automotive mirrors are of great significance. Smart windows not only enhance the beauty of traditional glass windows, The single electrode electrochromic material often has its insuperable disadvantages, while the composite electrochromic material can weaken the disadvantage of a single material. Therefore, composite electrochromic materials have become one of the most active research fields of electrochromic materials. The complementary electrochromic device can realize the charge transfer balance between cathode and anode electrochromic material, thus obtaining better electrochromic performance. In this thesis, the preparation and assembly of the cathode and anode electrochromic composite films are the object of study. The main work of this paper is as follows: (1) with ethylene glycol as the structure guide, WO _ 3s with scaffold structure were prepared on FTO conductive glass by hydrothermal method. 0.33H2O thin film. This structure can significantly increase the contact area between electrochromic layer and electrolyte, thus greatly shorten the ion migration path and improve the ion transport efficiency. The diluent was loaded into WO3s by spin coating method. 0.33H2O thin film. 0.33 H2O thin films and WOCs 3? The electrochemical properties of 0.33H _ 2O / PEDOT: PSS composite electrochromic films were measured respectively, compared with those of the monolayer WO _ s _ 3? 0.33H _ 2O thin film, the anode current density of the thin film containing PEDOT:PSS increases by 45% and the cathode current density increases by 16%, showing a faster ion diffusion rate. The electrochromic properties of the assembled electrochromic device are tested. The photomodulation range and response speed of the composite electrode containing PEDOT:PSS have been improved and optimized. The photochromic film of NiO was prepared on FTO conductive glass by hydrothermal method. Ammonium sulfate was used as the structure guide. The NiO films were grown vertically, and the perpendicular nanochips were interlaced to form porous structures. This unique structure provides a large reactive area for the electrochromic ion transport process. NiO/PB composite thin films were prepared by electrodeposition on NiO thin films. Single layer NiO thin film electrodes and NiO/PB thin films were prepared. Electrode assembly device, Compared with single-layer NiO thin film devices, the photomodulation range and coloring efficiency of composite thin film assembled devices are significantly improved. (3) in order to test the electrochromic properties of composite electrochromic films, The thin films were encapsulated as glass-r / FTO / WO _ s _ 3? 0.33H _ 2O / PEO _ 2O / PSS _ P _ S _ I _ O _ _ _. 0.33H _ 2O / LiClO _ S _ 4-PC-Ni _ O / FTO / glassass. the electrochromic properties of the devices have been studied separately. The results show that the complementary electrochromic devices with composite electrodes have excellent electrochromic properties. The photomodulation range can reach 52nm and 700 nm, the coloring and fading time are 6 s and 7.5 s, respectively, and the coloring efficiency can reach 121 cm 2 / C. the complementary electrochromic device with composite electrode has a better prospect in practical application.
【學(xué)位授予單位】：東華大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN383.1;TB34

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