Abstract In this work, we initially synthesized Sb2S3 with uniform flower-like structures via a facile hydrothermal method through the modification of the Sb source and pH value. Afterward, Sb2S3 with a nanosheet structure was successfully synthesized on reduced graphene oxide (Sb2S3@RGO). The flower-like Sb2S3 and the Sb2S3@RGO nanosheets were tested as the counter electrode (CE) of dye-sensitized solar cells, and the latter exhibited a higher electrocatalytic property than the former owing to the introduction of graphene. The results from electrochemical tests indicated that the as-prepared Sb2S3@RGO nanosheets possess higher catalytic activity, charge-transfer ability, and electrochemical stability than Sb2S3, RGO, and Pt CEs. More notably, the power conversion efficiency of Sb2S3@RGO reached 8.17%, which was higher than that of the standard Pt CE (7.75%).

中文翻译：

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选择性合成不同形貌的 Sb2S3 纳米结构以实现染料敏化太阳能电池的高性能

摘要 在这项工作中，我们通过简单的水热法，通过改变 Sb 源和 pH 值，初步合成了具有均匀花状结构的 Sb2S3。随后，在还原氧化石墨烯（Sb2S3@RGO）上成功合成了具有纳米片结构的Sb2S3。花状Sb2S3和Sb2S3@RGO纳米片作为染料敏化太阳能电池的对电极（CE）进行了测试，由于石墨烯的引入，后者表现出比前者更高的电催化性能。电化学测试结果表明，所制备的 Sb2S3@RGO 纳米片比 Sb2S3、RGO 和 Pt CE 具有更高的催化活性、电荷转移能力和电化学稳定性。更值得注意的是，Sb2S3@RGO 的功率转换效率达到了 8.17%，