One-Step Synthesis of Rod-Shaped NiFe-MOF as a Highly Efficient Oxygen Evolution Catalyst

Dandan Zhang; Renxing Huang; Huaming Xie; Xingyong Liu; Ying Lei; Ming Pan

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자료유형: 학술저널

저자정보: Dandan Zhang (Sichuan University of Science and Engineering) Renxing Huang (Sichuan University of Science and Engineering) Huaming Xie (Sichuan University of Science and Engineering) Xingyong Liu (Sichuan University of Science and Engineering) Ying Lei (Sichuan University of Science and Engineering) Ming Pan (Sichuan University of Science and Engineering)

저널정보: 성균관대학교 성균나노과학기술원 NANO NANO Vol.14 No.8

발행연도: 2019.1

수록면: 77 - 89 (13page)

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Development of low-cost, highly active catalyst for efficient oxygen evolution reaction based on earth-abundant metals is still a great challenge. Here, we report that a rod-like bimetallic NiFe metal-organic framework (NiFe-MOF) can directly act as a highly efficient oxygen evolution reaction (OER) catalyst synthesized by a convenient-to-operate hydrothermal method. The rod-like NiFe-MOF can derive 10 mA cm -2 with a low overpotential of only 26 mV, and its Tafel slope is 40.82 mV dec -1, which is superior to that of monometallic Ni-MOF or Fe-MOF, and even can be comparable to that of RuO2. To identify the origin of enhancing OER activity, we resorted to X-ray diffraction, scanning electron microscope, transmission electron microscope, high resolution transmission electron microscopy image and nitrogen adsorption–desorption techniques and various electrochemical techniques to probe it gingerly. The results indicate that its high electrochemically active area and the synergistic effect of bimetallic node could be responsible for the surprisingly high catalytic performance of the NiFe-MOF. These results suggest that this kind of bimetallic MOF (NiFe-MOF) could be a promising electrocatalyst for oxygen evolution reaction.

#Bimetallic #NiFe #metal-organic framework #oxygen evolution reaction

참고문헌 (61)

참고문헌 신청

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