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fig5

From:  Molecular engineering of coffee grounds via exogenous precursor-guided hydrothermal carbonization and activation for high-performance supercapacitor electrodes
Molecular engineering of coffee grounds via exogenous precursor-guided hydrothermal carbonization and activation for high-performance supercapacitor electrodes

Figure 5. (A-C) SEM images of ACG-Suc, ACG-Gly, and ACG-Cys, respectively; (D) TEM image and corresponding elemental mappings of C, N, O, and S for ACG-Cys. SEM: Scanning electron microscopy; TEM: transmission electron microscopy; ACG: activated coffee grounds.

Energy Materials
ISSN 2770-5900 (Online)
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