fig3

N, O co-doped hierarchically porous carbon derived from pitch/g-C<sub>3</sub>N<sub>4</sub> composite for high-performance zinc-ion hybrid supercapacitors

Figure 3. (A) XPS spectra of M-C3N4-x samples; High-resolution (B) C 1s spectra (C) N 1s spectra and (D) O 1s spectra of M-C3N4-2. XPS: X-ray photoelectron spectrometer.

Chemical Synthesis
ISSN 2769-5247 (Online)

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