Figure 4 | NPG Asia Materials

Figure 4

From: Ruthenium functionalized graphene aerogels with hierarchical and three-dimensional porosity as a free-standing cathode for rechargeable lithium-oxygen batteries

Figure 4

(a) X-ray powder diffraction (XRD) patterns of the pristine, discharged and charged cathodes of Ru particles functionalized graphene aerogel (Ru-GA). (b) Scanning electron microscope (SEM) image of the discharged cathode of Ru-GA. (c and d) Transmission electron microscopy (TEM) images of the discharged cathode of Ru-GA.

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