Low-cost CoPt alloy counter electrodes for efficient dye-sensitized solar cells
Low-cost CoPt alloy counter electrodes for efficient dye-sensitized solar cells
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DOI：
10.1016/j.jpowsour.2014.03.035
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发表时间：
2014-08
影响因子：
9.2
通讯作者：
B. He;Xin Meng;Q. Tang;Pinjiang Li;Shuangshuang Yuan;Peizhi Yang
中科院分区：
文献类型：
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作者：
B. He;Xin Meng;Q. Tang;Pinjiang Li;Shuangshuang Yuan;Peizhi Yang
染料敏化太阳能电池（DSSC）具有清洁、低成本、较高的能量转换效率、良好的耐久性和易于组装等优点，是解决全球能源和环境问题的一个很有前途的方法。然而，DSSC的商业应用一直受到对电极（CE）的高成本的阻碍。为了显著提高光电转换效率，我们采用电化学共沉积技术合成了CoPt合金，并将其用作高效DSSC的CE。由于快速的电荷转移，导电，和电催化，CoPt合金CE基DSSC的功率转换效率已显着提高相比，DSSC从铂只有CE。采用CoPt 0.1合金CE的DSSC的功率转换效率为9.59%，远高于传统的Pt基DSSC的6.86%。高转换效率、低成本与简单制备的组合以及可扩展性证明了CoPt合金CE在高效DSSC中的潜在用途。
Dye-sensitized solar cell (DSSC) is a promising solution to global energy and environmental problems because of its merits on clean, low fabrication cost, relatively high power conversion efficiency, good durability, and easy assembly. However, the commercial application of DSSCs has been hindered by the high expenses of counter electrodes (CEs). With an aim of significantly enhancing the light-to-electric power conversion efficiency, here we pioneerly synthesize CoPt alloys using an electrochemically codeposition technique which are employed as CEs for efficient DSSCs. Owing to the rapid charge transfer, electrical conduction, and electrocatalysis, power conversion efficiencies of CoPt alloy CE-based DSSCs have been markedly elevated in comparison with that of the DSSC from Pt-only CE. The DSSC employing CoPt0.1alloy CE gives an impressive power conversion efficiency of 9.59%, which is much higher than 6.86% from conversional Pt-based DSSC. The high conversion efficiency, low cost in combination with simple preparation, and scalability demonstrates the potential use of CoPt alloy CEs in efficient DSSCs.