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Depositing Pt nanoparticles by pulse electrodeposition for DSSCs counter electrode with high electrocatalytic activity

机译:通过脉冲电沉积沉积Pt纳米颗粒,具有高电催化活性的DSSCS对电极

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摘要

A Pt counter electrode of dye-sensitized solar cells (DSSCs) was prepared by a simple and low-cost pulse electrodeposition method. The catalytic activity and the Pt utilization efficiency of Pt films were investigated. In this study, four Pt counter electrodes were prepared by pulse electrodeposition at high current density on FTO substrates. The catalytic activity of the counter electrode and DSSC performance were optimized by varying the pulse electrodepositing cycles. The relationships between Pt nanostructure, electrochemical properties, interfacial charge transfer resistance and photovoltaic performance are investigated in detail. The Pt film prepared by 25 pulse electrodepositing cycles shows well-distributed Pt nanoparticles on the FTO substrate, which provides not only a larger electrochemical active surface area but also lower charge transfer resistance than others. The photovoltaic performance proves that the Pt counter electrode prepared by 25 pulse electrodepositing cycles at 30 mA/cm(2) current density achieves the highest energy conversion efficiency of 8.45% among these samples.
机译:通过简单且低成本的脉冲电沉积方法制备染料敏化太阳能电池(DSSCs)的PT对电极。研究了Pt膜的催化活性和Pt利用效率。在该研究中,通过在FTO基板上以高电流密度的脉冲电沉积来制备四个PT计数器电极。通过改变脉冲电沉积循环来优化对电极和DSSC性能的催化活性。研究了Pt纳米结构,电化学性质,界面电荷转移电阻和光伏性能之间的关系。由25脉冲电沉积循环制备的Pt膜在FTO基板上显示出良好分布的Pt纳米颗粒,其不仅提供比其他电化学的电化学表面积更大的电化学活性表面积,而且提供更低的电荷转移性。光伏性能证明,在30mA / cm(2)电流密度下由25脉冲电沉积循环制备的Pt计数器电极在这些样品中的最高能量转换效率为8.45%。

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