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虫号: 3290608
注册: 2014-06-24
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专业: 碳素材料与超硬材料

[交流] 以氮掺杂孔结构可调的碳气凝胶为基体的有弹性的对电极用于高性能的燃料敏化太阳能电池已有1人参与

Flexible counter electrodes based on nitrogen-doped carbon aerogels with tunable pore structure for high-performance dye-sensitized solar cells，Carbon 77 (2014) 113- 121. 影响因子：6.16
摘要：Nitrogen-doped carbon aerogels (NCAs) were prepared by introducing tripolycyanamide during the synthesis of organic aerogel precursors, and the effects of the nitrogen content on the pore structure of NCAs and the photovoltaic properties of dye-sensitized solar cells (DSSCs) based on NCA counter electrodes (CEs) were studied.With the increase of nitrogen-doped concentration, the pore size of NCAs decreases, and the mesoporous volume fraction increases, which lead to lower charge-transfer resistance and better electrocatalytic activity. The NCA CE based on polyvinylidene ﬂuoride as binder shows a greater electrocatalytic activity than that based on polytetrafluorethylene because its higher polarity leads to better bonding capacity. Under optimized experimental conditions, the DSSC based on NCA8 ﬂexible CE achieved a photoelectric conversion efﬁciency of 8.83%, which is 102.6% of that based on platinum CE (8.61%) under the same experimental conditions (AM 1.5, 100 mWcm-2).
中文翻译摘要：通过在有机气凝胶前驱体合成过程中引入三聚氰胺制备了氮-掺杂的碳气凝胶（NCAs），研究了氮含量对NCAs孔结构的影响以及基于NCA对电极（CEs）的燃料敏化太阳能电池的光电性能。随着氮含量的增加，NCAs孔的尺寸增加，中孔的体积分数增加，这将会导致低的电荷转移阻力和较好的电催化活性。聚偏二氟乙烯基粘结剂比聚四氟乙烯基具有更高的电催化活性因为它高的极性导致较好的粘结极性。在最佳的实验条件下，以NCAs弹性电极CE为基体的DSSC完成了8.83%的光电转换效率，在相同的实验条件下是铂CE基（8.61%）的102.6%。
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