fig1

Figure 1. (A) FE-SEM micrograph; (B) XRD profile; (C) TEM picture; and (D) HR-TEM image of the 3D Bi2Se3@N-C microspheres.
Figure 1. (A) FE-SEM micrograph; (B) XRD profile; (C) TEM picture; and (D) HR-TEM image of the 3D Bi2Se3@N-C microspheres.
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