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Broadband dielectric analysis of tannin-based carbon foams produced at nine different densities, ranging from 0.036 to 0.114 g/cm3, was carried out in wide frequency (20 Hz–35 GHz) and temperature (25–500 K) ranges. Both dielectric constant and electrical conductivity of carbon foams in quasi-static regime, at 129 Hz, were high (more than 106 and close to 70 S/m, respectively), and increased with...
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