E2g stretching mode of the sp 2 bonds, and is allowed for both ordered and disordered carbons. Robertson and Ferrari have proposed a 3-stage model to interpret the Raman spectra of carbons with varying degrees of structural order, ranging from ordered graphite to amorphous (tetrahedrally-coordinated) carbon with high sp content. Highly disordered nanoporous carbons with in-plane crystalline correlation lengths (La) less than 2 nm, as indicated in X-ray pair distribution function patterns, fall into stage 2 of this model, and the intensity of the D-band is now proportional to the probability of finding a six-membered (aromatic) ring in the graphene-like cluster or sheet -and is thus proportional to the cluster area: a stronger D band intensity indicates a larger graphene-like domain size in the carbon structure. As a result, the ID/IG intensity ratio is proportional to the square of the in-plane correlation length, La. In addition, the distribution of domain sizes of the graphene-like fragments gives rise to the broadening of the D band. The full width at half maximum (FWHM) of the D-band, therefore allows qualitative comparison of structural disorder distributions among different carbons. Additionally, a broad feature appears at 2300 to 3200 cm -1 , attributed to the modulated 2D, D+D' and 2D' bands. Here, our comparative study of disorder measurements from Raman and NMR spectroscopy yields new insight into the structures of amorphous nanoporous carbons, and provides new evidence for disorder-driven capacitance.