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含石墨烯IrO2-Ta2O5涂層鈦陽(yáng)極性能改進(jìn)研究
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山東大學(xué),山東大學(xué)

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國(guó)家重點(diǎn)實(shí)驗(yàn)室建設(shè)基金課題


Study on Properties of IrO2-Ta2O5 Coated Titanium Anodes Modified with Graphene
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Shandong University,Shandong University

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    摘要:

    采用熱分解的方法制備了不同含量石墨烯(graphene)的IrO2-Ta2O5涂層鈦陽(yáng)極(Ti/IrO2-Ta2O5-G)，并運(yùn)用場(chǎng)發(fā)射掃描電子顯微鏡（FESEM)、能譜儀(EDX)等分析手段和循環(huán)伏安(CV)、陽(yáng)極極化及電化學(xué)阻抗譜(EIS)等測(cè)試方法對(duì)陽(yáng)極的微觀結(jié)構(gòu)和電化學(xué)性能進(jìn)行研究。結(jié)果表明：Ti/IrO2-Ta2O5-G陽(yáng)極表面凹凸不平，裂紋細(xì)而小，為析氧反應(yīng)提供了更多的活性中心，電化學(xué)活性表面積增大，析氧電催化活性增強(qiáng)；加有不同量石墨烯的Ti/IrO2-Ta2O5-G陽(yáng)極的電化學(xué)性能有一定差別，其中加入0.4 g稬-1石墨烯陽(yáng)極的電化學(xué)性能提高最明顯。

    Abstract:

    The IrO2-Ta2O5 coated titanium anodes (Ti/IrO2-Ta2O5-G) with different graphene contents were prepared by thermal decomposition method. The microstructure was analyzed by FESEM and EDX, and the electrochemical properties were investigated by electrochemical testing including cyclic voltammetry(CV), anode polarization curves, and electrochemical impedance spectroscopy(EIS). As compared with the traditional Ti/IrO2-Ta2O5 anode, the results indicate that the rugged surface morphology with tiny cracks of the Ti/IrO2-Ta2O5-G anodes offer more active center for oxygen evolution reaction and have larger electrochemically active surface area, better electrocatalytic activity for oxygen evolution. The Ti/IrO2-Ta2O5-G anode with 0.4 g稬-1 graphene contents presents the best electrochemical performance.

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寧慧利,杜愛(ài)玲.含石墨烯IrO2-Ta2O5涂層鈦陽(yáng)極性能改進(jìn)研究[J].稀有金屬材料與工程,2016,45(4):946~951.[ninghuili, duailing. Study on Properties of IrO2-Ta2O5 Coated Titanium Anodes Modified with Graphene[J]. Rare Metal Materials and Engineering,2016,45(4):946~951.]
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  • 收稿日期:2014-04-23
  • 最后修改日期:2014-07-10
  • 錄用日期:2014-08-12
  • 在線發(fā)布日期: 2016-06-02
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