Abstract A simple, rapid and cost-effective strategy for in situ growing multi-walled carbon nanotubes (MWCNTs) nanocomposites on metal nickel substrates by ethanol flame method with two different precursors is reported to prepare counter electrodes (CEs) of dye-sensitized solar cells (DSSCs). Thiourea is first introduced as a precursor to prepare CNTs with different dimensions and individual carbon-encased sulfide nanoparticles and consuming lower energy in situ preparing process. Then, the diverse structure of as-prepared CNTs samples is explored by observing the reaction process of catalytic growing CNTs. Significantly, both kinds of CNTs nanocomposites in situ growing on nickel foils through flame method are first introduced as CEs in DSSCs, which possessed good conductive properties and excellent electrocatalytic performance. Two corresponding DSSCs based on CNTs CEs display higher fill factor (FF = 0.72, 0.73), larger short-circuit current density (Jsc = 14.1, 14.7 mA cm−2) and higher photoelectric conversion efficiency (7.43% and 6.96%) than that (0.69, 13.8 mA cm−2, 6.72%) of DSSC based on Pt/FTO CE.

中文翻译：

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用乙醇火焰法原位生长将镍化合物包封在镍箔上的碳纳米管作为染料敏化太阳能电池的优良对电极

摘要 据报道，一种使用两种不同前驱体通过乙醇火焰法在金属镍基材上原位生长多壁碳纳米管 (MWCNTs) 纳米复合材料的简单、快速且经济高效的策略制备染料敏化太阳能电池的对电极 (CEs)。 (DSSC)。硫脲首先作为前体被引入，以制备具有不同尺寸的碳纳米管和单个碳包裹的硫化物纳米粒子，并在原位制备过程中消耗较低的能量。然后，通过观察催化生长的碳纳米管的反应过程，探索了所制备碳纳米管样品的不同结构。值得注意的是，这两种通过火焰法在镍箔上原位生长的 CNTs 纳米复合材料首次被引入 DSSCs 中作为 CEs，它们具有良好的导电性能和优异的电催化性能。