本文關(guān)鍵詞： 電致變色 聚苯胺 石墨烯 復合電極 電化學聚合　出處：《高等學�；瘜W學報》2017年04期 　論文類型：期刊論文

【摘要】：采用改進的Hummers法制備氧化石墨烯(GO),首先,石墨與濃硫酸、過硫酸鉀和五氧化二磷反應制得強氧化產(chǎn)物,隨后將其與濃硫酸、硝酸鈉、高錳酸鉀反應,經(jīng)雙氧水發(fā)泡、酸洗、超聲等合成氧化石墨烯水溶液,再通過金屬箔還原和基底轉(zhuǎn)移過程制備GO-氧化銦錫(ITO)復合電極材料.通過金屬箔還原和基底轉(zhuǎn)移過程制備GO-氧化銦錫(ITO)復合電極材料.利用電化學聚合法在GO-ITO復合電極上制備聚苯胺(PANI)薄膜,并對其形貌結(jié)構(gòu)、電化學及電致變色性質(zhì)進行表征.結(jié)果表明,與ITO電極相比,采用GO-ITO復合電極制備的PANI的成膜性得到明顯改善,復合電極具有更加均勻細致的顆粒表面,增大了聚合物與電解液之間的接觸面積,為電致變色過程中平衡離子的注入/脫出提供了更多的通道,因而PANI薄膜在700nm處的光學對比度提高了約13%,響應速度縮短了約2.6 s,著色效率高達169.6 cm2/C.GO的引入保持了PANI良好的電化學穩(wěn)定性.GO-ITO復合電極有效改善了聚合物的綜合性能,對于聚合物電致變色材料及器件的開發(fā)具有潛在的應用前景.
[Abstract]:Graphene oxide was prepared by improved Hummers method. Firstly, graphite reacted with concentrated sulfuric acid, potassium persulfate and phosphorus pentoxide to produce a strong oxidation product. Then it reacted with concentrated sulfuric acid, sodium nitrate and potassium permanganate, and was foamed with hydrogen peroxide. Ultrasonic synthesis of graphene oxide aqueous solution, The composite electrode materials were prepared by metal foil reduction and substrate transfer process. The composite electrode materials were prepared by metal foil reduction and substrate transfer. The composite electrode materials were prepared by electrochemical polymerization in GO-ITO. Polyaniline (pani) thin films were prepared on the composite electrode. The morphology, structure, electrochemical and electrochromic properties of PANI were characterized. The results showed that compared with ITO electrode, the film-forming property of PANI prepared by GO-ITO composite electrode was obviously improved, and the composite electrode had more uniform particle surface. The contact area between polymer and electrolyte is increased, which provides more channels for the implantation / removal of equilibrium ions in electrochromic process. As a result, the optical contrast of PANI thin films at 700nm is increased by about 13x, the response speed is shortened by about 2.6s, and the coloring efficiency up to 169.6 cm2/C.GO keeps the good electrochemical stability of PANI. GO-ITO composite electrode can effectively improve the comprehensive properties of the polymer. It has a potential application prospect for the development of polymer electrochromic materials and devices.
【作者單位】： 浙江工業(yè)大學化學工程學院;
【基金】：國家自然科學基金(批準號:51673174,51573165) 浙江省自然科學基金(批準號:LY15E030006) 浙江工業(yè)大學�；鹬攸c項目(批準號:1401101002408)資助~~
【分類號】：O631.23;TB383.2

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