Exfoliation of ultrathin FePS3 layers as a promising electrocatalyst for the oxygen evolution reaction
Wen Zhu, Wei Gan, Zahir Muhammad, Changda Wang, Chuanqiang Wu, Hengjie Liu, Daobin Liu, Ke Zhang, Qun He, Hongliang Jiang, Xusheng Zheng, Zhe Sun, Shuangming Chen, Li Song
Index: 10.1039/C8CC01076E
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Abstract
Few-layer ternary FePS3 nanosheets, prepared via chemical vapor transport synthesis and ball-milling exfoliation, exhibit excellent electrocatalytic performance for the oxygen evolution reaction in an alkaline medium. Combined with first principles calculations, our X-ray spectroscopy and HRTEM results clearly reveal that the introduction of in-plane defects in FePS3 layers after exfoliation and formation of a FePS3–FeOOH heterostructure during the OER process largely contribute to the catalytic activity enhancement.