Highly efficient ZnO-based dye-sensitized solar cells with low-cost Co–Ni/carbon aerogel composites as counter electrodes,New Journal of Chemistry

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Highly efficient ZnO-based dye-sensitized solar cells with low-cost Co–Ni/carbon aerogel composites as counter electrodes
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2018-08-29 00:00:00 , DOI: 10.1039/c8nj03376e
Jian Cheng _{1,

2,

3,

4,

5} , Junhong Ma _{1,

2,

3} , Yuhua Ma _{6,

7,

8} , Cui Zhou _{4,

5,

8} , Yue Qiang _{1,

2,

3,

4,

5} , Xiaofeng Zhou _{1,

2,

3,

4,

5} , Jianya Yang _{1,

2,

3,

4,

5} , Haokun Shi _{1,

2,

3,

4,

5} , Yahong Xie _{1,

2,

3,

4,

5}

Affiliation

Dye-sensitized solar cells (DSSCs) have many advantages, but the use of expensive platinum counter electrodes (CEs) limits their industrial applications. In this work, a Co–Ni/carbon aerogel composite with a unique three-dimensional network structure and high specific surface area was prepared through simple ion exchange and carbonization of low-cost sodium alginate supramolecular hydrogels. Using this metal/carbon aerogel composite as the CE (hereafter denoted as CAE) of ZnO-based DSSCs, a photoelectric conversion efficiency (PCE) of 5.08% was obtained. This value was 94.44% of the PCE obtained using Pt. Analysis of current–voltage curves, cyclic voltammograms, and electrochemical impedance spectra revealed that the fabricated CAE had higher catalytic activity than a Pt CE and comparable charge-transfer ability. The adhesion of the CAE onto FTO was also strong with carbon paste as an adhesive.

中文翻译：

高效的基于ZnO的染料敏化太阳能电池，以低成本Co-Ni /碳气凝胶复合材料作为对电极

染料敏化太阳能电池（DSSC）具有许多优点，但是昂贵的铂对电极（CE）的使用限制了其工业应用。在这项工作中，通过简单的离子交换和低成本藻酸钠超分子水凝胶的碳化，制备了具有独特的三维网络结构和高比表面积的Co-Ni /碳气凝胶复合材料。使用该金属/碳气凝胶复合物作为ZnO类DSSC的CE（以下称为CAE），得到5.08％的光电转换效率（PCE）。该值是使用Pt获得的PCE的94.44％。对电流-电压曲线，循环伏安图和电化学阻抗谱的分析表明，所制备的CAE具有比Pt CE更高的催化活性和相当的电荷转移能力。

更新日期：2018-08-29

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