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首页> 外文期刊>RSC Advances >Electrophoretic separation and deposition of metal-graphene nanocomposites and their application as electrodes in solar cells
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Electrophoretic separation and deposition of metal-graphene nanocomposites and their application as electrodes in solar cells

机译：金属 - 石墨烯纳米复合材料的电泳分离及沉积及其作为太阳能电池电极的应用

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Graphene oxide (GO) is a 2D material which offers great promise in many applications, owing primarily to the reactive surface which enables an easy surface functionalization and solution processing of the resulting materials. Herein we demonstrate that graphene oxide (GO) can be used as a supporting template for the production of new graphene-metal nanoparticle composites. Our synthetic strategy allowed for nanoparticle deposition (Pt and Au) onto the surface of the 2 dimensional carbon nano-substrate without stabilising ligands. Moreover we have shown that the composite materials can be further processed using electrophoretic deposition (EPD). The deposition of the materials onto conducting glass substrates (namely fluorine doped tin oxide) via EPD, allows for the formation of high quality, stable electrodes. These electrodes demonstrated a tuneable electrochemical response towards the reduction of the tri-iodide ion, when studied electrochemically. These electrodes were then tested as potential counter electrodes (CEs) in dye sensitized solar cells (DSSCs) and displayed very promising results, increasing the efficiency by 47.5%, when compared to a conventional Pt electrode.
机译：石墨烯氧化物（GO）是一种2D材料，其在许多应用中提供了很大的希望，主要是在反应表面上，这使得能够易于表面官能化和所得材料的溶液处理。在此，我们证明了石墨烯（GO）可以用作用于生产新的石墨烯纳米颗粒复合材料的支撑模板。我们的合成策略允许纳米颗粒沉积（Pt和Au）在2维碳纳米基板的表面上而不稳定配体。此外，我们已经表明，可以使用电泳沉积（EPD）进一步处理复合材料。通过EPD将材料沉积到导电玻璃基板上（即氟掺杂氧化锡），允许形成高质量，稳定的电极。当电化学研究时，这些电极表明了朝向减少三碘离子的可调谐电化学响应。然后将这些电极作为染料敏化太阳能电池（DSSCs）的电位计数电极（CES）进行测试，并显示出非常有前途的结果，与常规PT电极相比，将效率提高47.5％。

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