Application of Carbon-Based Oxygen Evolution Reaction …
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Fig. 1 The zinc electrowinning device diagram. (Color figure online)
Results and Discussion
Characterization of Amino-HNC
The SEM and SEM-EDS determination results of materials are shown in Fig. 2.
It can be seen from Fig. 1a that the prepared catalyst is in a network structure.
Compared with the comparative sample of CP (Fig. 1c), the Amino-HNC (Fig. 1b)
surface shows a porous structure, which can provide more active sites for the oxygen
evolution reaction proceeding. The SEM-EDS mapping results (Fig. 1d) show that
the carbon surface is mixed with N element, which improves the activity of the
catalyst.
XRD is mainly used to analyze the composition of prepared materials and determine the crystal structure. As shown in Fig. 3, the diffraction pattern shows a
sharp, strong peak at 26.4°, corresponding to (002) of graphite (JCPDS#08-0415).
Meanwhile, the peaks at 44.5°, 54.5°, and 77.4°, corresponding to (101), (004),
(110), respectively, although fixed well with graphite. XRD results indicated that the
as-prepared Amino-HNC catalyst has similar properties to graphite.
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Fig. 1 The zinc electrowinning device diagram. (Color figure online)
Results and Discussion
Characterization of Amino-HNC
The SEM and SEM-EDS determination results of materials are shown in Fig. 2.
It can be seen from Fig. 1a that the prepared catalyst is in a network structure.
Compared with the comparative sample of CP (Fig. 1c), the Amino-HNC (Fig. 1b)
surface shows a porous structure, which can provide more active sites for the oxygen
evolution reaction proceeding. The SEM-EDS mapping results (Fig. 1d) show that
the carbon surface is mixed with N element, which improves the activity of the
catalyst.
XRD is mainly used to analyze the composition of prepared materials and determine the crystal structure. As shown in Fig. 3, the diffraction pattern shows a
sharp, strong peak at 26.4°, corresponding to (002) of graphite (JCPDS#08-0415).
Meanwhile, the peaks at 44.5°, 54.5°, and 77.4°, corresponding to (101), (004),
(110), respectively, although fixed well with graphite. XRD results indicated that the
as-prepared Amino-HNC catalyst has similar properties to graphite.