Figure 3.
a–d) TEM images and e) Raman spectra of different width of DN‐GNR range from 3 to 24 nm. f) ORR and g) OER polarization curves, and h) the overall polarization curves of different width of DN‐GNRs.
a–d) TEM images and e) Raman spectra of different width of DN‐GNR range from 3 to 24 nm. f) ORR and g) OER polarization curves, and h) the overall polarization curves of different width of DN‐GNRs.