Low-Dimensional Hyperthin FeS2 Nanostructures for Efficient and Stable Hydrogen Evolution Electrocatalysis

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• 作者：Daniel Jasion ; Joseph M. Barforoush ; Qiao Qiao ; Yimei Zhu ; Shenqiang Ren ; Kevin C. Leonard
• 刊名：ACS Catalysis
• 出版年：2015
• 出版时间：November 6, 2015
• 年：2015
• 卷：5
• 期：11
• 页码：6653-6657
• 全文大小：387K
• ISSN：2155-5435

文摘

We report a scalable, solution-processing method for synthesizing low-dimensional hyperthin FeS₂ nanostructures, and we show that 2D FeS₂ disc nanostructures are an efficient and stable hydrogen evolution electrocatalyst. By changing the Fe:S ratio in the precursor solution, we were able to preferentially synthesize either 1D wire or 2D disc nanostructures. The 2D FeS₂ disc structure has the highest electrocatalytic activity for the hydrogen evolution reaction, comparable to platinum in neutral pH conditions. The ability of the FeS₂ nanostructures to generate hydrogen was confirmed by scanning electrochemical microscopy, and the 2D disc nanostructures were able to generate hydrogen for over 125 h.