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首页> 外文期刊>RSC Advances >α-Fe2O3 hollow meso–microspheres grown on graphene sheets function as a promising counter electrode in dye-sensitized solar cells
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α-Fe2O3 hollow meso–microspheres grown on graphene sheets function as a promising counter electrode in dye-sensitized solar cells

机译：石墨烯片上生长的α-Fe2O3中空微球可作为染料敏化太阳能电池中有希望的反电极

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Although nanoparticles, nanorods, and nanosheets of α-Fe _(2) O _(3) on graphene sheets have been synthesized, it remains a challenge to grow 3D α-Fe _(2) O _(3) nanomaterials with more sophisticated compositions and structures on the graphene sheets. Herein, we demonstrate a facile solvothermal route under controlled conditions to successfully fabricate 3D α-Fe _(2) O _(3) hollow meso–microspheres on the graphene sheets (α-Fe _(2) O _(3) /RGO HMM). Attributed to the combination of the catalytic features of α-Fe _(2) O _(3) hollow meso–microspheres and the high conductivity of graphene, α-Fe _(2) O _(3) /RGO HMM exhibited promising electrocatalytic performance as a counter electrode in dye-sensitized solar cells (DSSCs). The DSSCs fabricated with α-Fe _(2) O _(3) HMM displayed high power conversion efficiency of 7.28%, which is comparable with that of Pt (7.71%).
机译：尽管已经合成了石墨烯片上的α-Fe_（2）O _（3）的纳米粒子，纳米棒和纳米片，但是要生长具有更复杂的3Dα-Fe_（2）O _（3）纳米材料仍然是一个挑战。石墨烯片上的组成和结构。在这里，我们证明了在受控条件下的一种轻松的溶剂热途径，可以成功地在石墨烯片上制备3Dα-Fe_（2）O _（3）空心中微球（α-Fe_（2）O _（3）/ RGO HMM）。归因于α-Fe_（2）O _（3）空心中微球的催化特性和石墨烯的高电导率，α-Fe_（2）O _（3）/ RGO HMM表现出良好的电催化性能染料敏化太阳能电池（DSSC）中用作对电极的性能。用α-Fe_（2）O _（3）HMM制成的DSSC显示出7.28％的高功率转换效率，与Pt（7.71％）相当。

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