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首页> 外文期刊>Journal of power sources >Cobalt iron selenide/sulfide porous nanocubes as high-performance electrocatalysts for efficient dye-sensitized solar cells
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Cobalt iron selenide/sulfide porous nanocubes as high-performance electrocatalysts for efficient dye-sensitized solar cells

机译：硒化钴铁/硫化物多孔纳米立方体作为高效染料催化剂，用于高效染料敏化太阳能电池

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摘要

A novel series of ternary compounds, namely cobalt iron selenide/sulfide nanocubes, are successfully synthesized as counter electrode (CE) materials for dye-sensitized solar cells (DSSCs), which deliver excellent performances. Homogeneous cobalt iron Prussian-blue-analog (PBA) nanocubes are prepared as the templates and are subsequently dealt with selenation/sulfidation processes via hydrothermal methods. Owing to their unique morphology, porous structure, high surface area, small charge transfer resistance and high diffusion coefficient, the Co-Fe-Se/S nanocubes possess high catalytic activity and excellent conductivity, which are tested and verified by electrochemical measurements. Meanwhile, cobalt iron selenide/sulfide nanocubes CEs achieve high efficiencies of 9.58% and 9.06%, respectively, which are both higher than that of Pt CE (8.16%). All these prominent merits make them outstanding and promising participants among Pt-free CE materials of DSSCs with lower production costs and higher power conversion efficiency. (C) 2017 Elsevier B.V. All rights reserved.
机译：已成功合成了一系列新型三元化合物，即硒化钴铁/硫化物纳米立方体，作为染料敏化太阳能电池（DSSC）的对电极（CE）材料，具有出色的性能。均相钴铁普鲁士蓝类似物（PBA）纳米立方体被制备为模板，随后通过水热方法进行硒化/硫化过程。由于其独特的形态，多孔结构，高表面积，较小的电荷转移阻力和较高的扩散系数，Co-Fe-Se / S纳米立方体具有较高的催化活性和优异的电导率，已通过电化学测量进行了验证。同时，硒化钴铁/硫化物纳米立方晶CE分别达到9.58％和9.06％的高效率，均高于Pt CE的效率（8.16％）。所有这些突出的优点使它们成为DSSC的无铂CE材料中的杰出和有前途的参与者，具有较低的生产成本和较高的功率转换效率。 （C）2017 Elsevier B.V.保留所有权利。

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