Chinese Journal of Catalysis ›› 2021, Vol. 42 ›› Issue (8): 1370-1378.DOI: 10.1016/S1872-2067(20)63741-X
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You Xua,b, Kaili Rena, Rong Xub,*()
Received:
2020-08-31
Accepted:
2020-10-22
Online:
2021-08-18
Published:
2020-12-10
Contact:
Rong Xu
About author:
*. E-mail: rxu@ntu.edu.sgSupported by:
You Xu, Kaili Ren, Rong Xu. In situ formation of amorphous Fe-based bimetallic hydroxides from metal-organic frameworks as efficient oxygen evolution catalysts[J]. Chinese Journal of Catalysis, 2021, 42(8): 1370-1378.
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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(20)63741-X
Fig. 1. SEM (a) and TEM (b) images of the NiFe-MIL-0.75. SEM (c,d), TEM (e), HRTEM (f), and HAADF-STEM (g) and elemental mapping images of the as-converted NiFe-OH-0.75.
Fig. 2. XRD patterns (a) and Raman spectra (b) of NiFe-MIL-0.75 and the as-converted NiFe-OH-0.75; High-resolution Fe 2p (c) and high-resolution Ni 2p (d) XPS spectra of NiFe-OH-0.75.
Fig. 3. SEM image (a) of the CoFe-MIL-0.75. The inset of (a) is the TEM image of CoFe-MIL-0.75. SEM (b), TEM (c), HRTEM (d), and HAADF- STEM (e) images and element mapping images of the CoFe-OH-0.75. The inset of (d) is the SAED pattern of the CoFe-OH-0.75.
Fig. 4. OER polarization curves (a,c) and Tafel plots (b,d) for the various catalysts loaded on different electrode substrates. (a,b) GC electrode; (c,d) nickel foam electrode.
Fig. 5. CV curves at various scan rates and capacitive current densities of the NiFe-OH-0.75 decorated GC electrode (a,c) and NiFe-OH-0.75(H) decorated GC electrode (b,d).
Fig. 6. Time-dependent potential curve (a) and time-dependent current density curve (b) (without iR compensation) of the NiFe-OH-0.75/Ni foam electrode.
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