Fig. 3 Porosity analyses of PCFs.

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Fig. 3 Porosity analyses of PCFs. Porosity analyses of PCFs. (A) SAXS spectra of electrospun (e-spun), oxidized, and pyrolyzed PAN-b-PMMA fibers, in comparison with the carbon fibers pyrolyzed from PAN and PAN/PMMA blend. a.u., arbitrary units. (B) N2 at 77.4 K and (C) CO2 at 273.2 K adsorption-desorption isotherms of all carbon fibers. STP, standard temperature and pressure. (D) Calculated pore size distributions of all carbon fibers using NLDFT. Zhengping Zhou et al. Sci Adv 2019;5:eaau6852 Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY).