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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >In situ growth of oriented polyaniline nanowires array for efficient cathode of Co(III)/Co(II) mediated dye-sensitized solar cell
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In situ growth of oriented polyaniline nanowires array for efficient cathode of Co(III)/Co(II) mediated dye-sensitized solar cell

机译：Co（III）/ Co（II）介导的染料敏化太阳能电池有效阴极的定向聚苯胺纳米线阵列的原位生长

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摘要

To improve the electrocatalytic performance of polyaniline thin films, an oriented polyaniline nanowires array has been successfully grown in situ on conductive glass substrates without templates and applied as the cathode of dye-sensitized solar cells (DSSCs) mediated with a Co(bpy)3~(3+/2+) (bpy = 2,2'-bipyridine) redox couple. Compared to the polyaniline film with a random network, the oriented polyaniline nanowires array exhibits much better electrocatalytic performance, and even outperforms the typical Pt electrode in both electrocatalytic performance and electrochemical stability when exposed to the acetonitrile solution of the Co(bpy)3~(3+/2+) redox couple. Owing to the higher electrocatalytic performance, the DSSC with the oriented nanowires array produces a higher short-circuit photocurrent and fill factor than the DSSCs with the random polyaniline network or Pt cathodes. Consequently, the power conversion efficiency of DSSCs based on a typical D-π-A organic dye sensitizer increases from 5.97% for the polyaniline random network cathode to 8.24% for the oriented polyaniline nanowires array cathode, which is also higher than the efficiency (6.78%) of the DSSC with the Pt cathode.
机译：为了提高聚苯胺薄膜的电催化性能，定向聚苯胺纳米线阵列已成功地在无模板的导电玻璃基板上原位生长，并被用作由Co（bpy）3〜介导的染料敏化太阳能电池（DSSC）的阴极。 （3 + / 2 +）（bpy = 2,2'-联吡啶）氧化还原对。与具有随机网络的聚苯胺薄膜相比，取向的聚苯胺纳米线阵列表现出更好的电催化性能，并且当暴露于Co（bpy）3〜（）的乙腈溶液中时，在电催化性能和电化学稳定性方面甚至优于典型的Pt电极。 3 + / 2 +）氧化还原对。由于具有更高的电催化性能，具有定向纳米线阵列的DSSC与具有无规聚苯胺网络或Pt阴极的DSSC相比，具有更高的短路光电流和填充因子。因此，基于典型D-π-A有机染料敏化剂的DSSC的功率转换效率从聚苯胺无规网络阴极的5.97％提高到定向聚苯胺纳米线阵列阴极的8.24％，这也高于效率（6.78 DSC和Pt阴极。

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