【摘 要】
：
Exploring the low-cost and effective Pt-free catalysts is of particular significance for the development of dye-sensitized solar cell (DSSC).Transition metal sulfides (TMSs) have been considered as pr
【机 构】
：
Functional Materials Laboratory (FML), School of Materials Science and Engineering,Xi'an University
【出 处】
：
第八届新型太阳能材料科学与技术学术研讨会
论文部分内容阅读
Exploring the low-cost and effective Pt-free catalysts is of particular significance for the development of dye-sensitized solar cell (DSSC).Transition metal sulfides (TMSs) have been considered as promising catalysts;however,the low utilization of active sites and poor electrical conductivity hindered its wide-ranging catalytic application.In this work,the zeolitic imidazolate frameworks (ZIF)-derived cobalt nitrogen co-doped carbon (Co/N-C) were introduced to solve the above problems.Thanks to the affecting of Co/N-C,the resultant MoS2 anchored Co/N-C composite (Co/N-C@MoS2) is endowed with good conductivity and rich catalytic active sites,and shows substantially enhanced tri-iodide reduction reactions (IRR) electrochemical activity.Remarkably,the Co/N-C@MoS2 counter electrode achieves an excellent DSSC photoelectric conversion efficiency (7.85%),which is significantly better than Pt (7.24%).The present work not only develops low-cost and effective catalysts,but also provides possibilities for the structural design of TMSs composite materials.
其他文献
Functional porous carbon-based materials have been considered as affordable and efficient electrocatalysts in the electrocatalyst field.In this work,sea urchin-like Co,N doped porous carbon dodecahedr
The development and design of electrode materials with an excellent catalytic activity and cyclic stability have significant importance for the further realization of large-scale applications of dye-s
The development of advanced catalysts with excellent catalytic ability and stability is critical for improving energy conversion efficiency in triiodide reduction reaction (IRR).To fabricate high-qual
Two copper complexes ([Cu(moby)2]2+/+ (moby=6,6-bis(methoxymethyl)-2,2-bipyridine) and[Cu(eoby)2]2+/+,(eoby=6,6-bis(ethoxymethyl)-2,2-bipyridine)) with bipyridine ligands were synthesized and used as
染料敏化太阳能电池(DSSCs)自1991年问世以来,由于其制备方法廉价简单、器件集成度高、在低光强和漫射照明条件下仍具备高功率输出等诸多优点,是极具商业化前景的新型光伏器件.特别是,双面照射DSSCs可有效利用多方向光源,具备高的环境普适性,这对DSSCs光电转换效率提升和在光伏建筑一体化等方面的应用都十分重要.PEDOT作为一种有机导电高分子聚合物,其具备高的电导率和高透光率,是双面照射DSS
染料敏化太阳能电池(DSSC)的传统液态电解质存在有机溶剂易挥发、封装工艺困难、电池稳定性差等问题,不利于实现DSSC的实际应用和工业化生产[1-2].针对上述问题,本文将新型二氧化硅(SiO2)气凝胶与石墨烯(GR)、多壁碳纳米管(MWCNT)或聚苯胺(PANI)的复合材料用于制备准固态电解质,并表征了SiO2@GR,SiO2@MWCNT和SiO2@PANI准固态电解质DSSC的电流密度-电压(
Environment contamination and energy crisis make human accelerate the exploration of high efficient new energy storage and conversion device.Dye-sensitized solar cells (DSSCs) have attracted numerous
染料敏化太阳能电池成本低廉,制备工艺简单,外观色彩丰富,透明度高,效率受入射光影响小,在叠层、双面照射和透明型光电器件等方面展现出广阔的市场化前景.起到促进电解质还原作用的对电极需满足高导电性、高催化活性、高透明性、易制备、低成本等多方面要求.然而,过渡金属氧化物导电率不足,对碘的吸附能(Ead1)[1]低,难以满足高电催化活性的DSSCs对电极.针对这一问题,我们利用高导电性载体诱导效应实现惰性
Triiodide reduction (IRR) and hydrogen evolution reaction (HER) are critical chemical processes in dye-sensitized solar cells (DSSCs) and water splitting,respectively,and their reaction rates will gre
With increasing energy demands and impending climate change,significant concerns have been raised over the electrocatalysts in energy conversion technologies due to the increase in the rate,efficiency