Research Article
Preparation of a Nitrogen-Doped Reduced Graphene Oxide-Modified Graphite Felt Electrode for VO2+/VO2+ Reaction by Freeze-Drying and Pyrolysis Method
Figure 4
Surface morphology of N-rGO-modified GF electrode (a) and detailed view of the N-rGO absorbed on GF electrode. The red arrow in Figure 4 (b) points to the absorbed N-rGO.
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