Bai Yang, Zong Xu, Yu Hua, Chen Zhi-Gang, Wang Lianzhou
Nanomaterials Centre, School of Chemical Engineering and AIBN, The University of Queensland, Brisbane, QLD 4072 (Australia).
Chemistry. 2014 Jul 7;20(28):8670-6. doi: 10.1002/chem.201402657. Epub 2014 Jun 12.
A new type of semitransparent SnS2 nanosheet (NS) films were synthesized using a simple and environmentally friendly solution-processed approach, which were subsequently used as a counter electrode (CE) alternative to the noble metal Pt for triiodide reduction in dye-sensitized solar cells (DSSCs). The resultant SnS2 -based CE with a thickness of about 300 nm exhibited excellent electrochemical catalytic activity for catalyzing the reduction of triiodide and demonstrated comparable power conversion efficiency of 7.64 % with that of expensive Pt-based CE in DSSCs (7.71 %). When functionalized with a small amount of carbon nanoparticles, the SnS2 NS-based CE showed even better performance of 8.06 % than Pt under the same conditions. Considering the facile fabrication method, optical transparency, low cost, and remarkable catalytic property, this study on SnS2 NSs may shed light on the large-scale production of electrocatalytic electrode materials for low-cost photovoltaic devices.
采用一种简单且环保的溶液处理方法合成了一种新型的半透明二硫化锡纳米片（NS）薄膜，随后将其用作染料敏化太阳能电池（DSSC）中三碘化物还原的对电极（CE），替代贵金属铂。所得厚度约为300 nm的基于二硫化锡的CE对催化三碘化物还原表现出优异的电化学催化活性，并且在DSSC中展示出与昂贵的基于铂的CE相当的7.64%的功率转换效率（基于铂的CE为7.71%）。当用少量碳纳米颗粒进行功能化时，基于二硫化锡NS的CE在相同条件下表现出比铂更好的8.06%的性能。考虑到其简便的制备方法、光学透明度、低成本以及显著的催化性能，这项关于二硫化锡NS的研究可能为低成本光伏器件的电催化电极材料的大规模生产提供启示。
