Synthesis of ternary nickel cobalt phosphide nanowires through phosphorization for use in platinum-free dye-sensitized solar cells
Synthesis of ternary nickel cobalt phosphide nanowires through phosphorization for use in platinum-free dye-sensitized solar cells
复制标题
磷化法合成三元镍钴磷化物纳米线用于无铂染料敏化太阳能电池
DOI：
10.1016/j.jallcom.2018.08.136
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发表时间：
2018
影响因子：
6.2
通讯作者：
Zhu Miaoli
中科院分区：
文献类型：
--
作者：
Su Lijun;Li Honggang;Xiao Yaoming;Han Gaoyi;Zhu Miaoli
以氢氧化镍和氢氧化钴为前驱体，通过磷化反应在钛片上制备了磷化镍钴纳米线，并将其用作染料敏化太阳能电池的对电极材料。电化学研究表明，三元磷化镍钴对电极比二元磷化镍和磷化钴对电极具有更高的催化活性，这是由于两种过渡金属的引入可以调节价电子，提供两个供电子活性中心。该三元磷化镍钴对电极的染料敏化太阳能电池获得了8.01%的有竞争力的光电转换效率，其高于二元磷化镍，（3.73%）和磷化钴（2.80%）对电极，并且光伏性能与使用常规铂对电极的光伏性能相当（8.69%）的染料敏化太阳能电池。
Nickel cobalt phosphide nanowires are fabricated on titanium foil through phosphating reaction from their nickel and cobalt hydroxide precursors, which are employed as the counter electrode materials for the dye-sensitized solar cell. Electrochemical investigations demonstrate that the ternary nickel cobalt phosphide counter electrode exhibits higher catalytic activity than that of the binary nickel phosphide and cobalt phosphide counter electrodes, which is due to that the introduction of two transition metals can adjust the valence electron and provide two electron donating active sites. The dye-sensitized solar cell with the ternary nickel cobalt phosphide counter electrode achieves a competitive photoelectric conversion efficiency of 8.01%, which is higher than that of the binary nickel phosphide (3.73%) and cobalt phosphide (2.80%) counter electrodes under the same conditions and comparable photovoltaic performance to that using the conventional platinum counter electrode (8.69%) for the dye-sensitized solar cell.