Supplementary information from Novel biomass-derived smoke-like carbon as a supercapacitor electrode material Mingxu Chu Mingtang Li Zhaolian Han Jinshan Cao Rui Li Zhiqiang Cheng 10.6084/m9.figshare.8982362.v1 https://rs.figshare.com/articles/journal_contribution/Supplementary_information_from_Novel_biomass-derived_smoke-like_carbon_as_a_supercapacitor_electrode_material/8982362 In this present work, smoke-like carbon was successfully fabricated from a bio-waste fungal substrate crude polysaccharide for the first time. The as-prepared products possess smoke-like structures, ultra-high specific surface area (<i>S</i><sub>BET</sub>: 2160 m<sup>2</sup> g<sup>−1</sup>) and a high content of micropores (microporous surface area of 60%, with a nanopore size of 0.70 nm), which can increase the specific capacitance, representing a wonderful structure for electrochemical energy storage devices. The as-prepared sample displayed an excellent specific capacitance of 152 F g<sup>−1</sup> at 5 A g<sup>−1</sup> in the three-electrode configuration and exhibited maximal densities of 6.8–10.2 W h kg<sup>−1</sup> under power outputs of 253.4–24.3 kW kg<sup>−1</sup>. We believe that this work demonstrates a simple, green and low-cost route by using agricultural residue to prepare applicable carbon materials for use in energy storage devices. 2019-07-23 10:04:01 biomass carbon supercapacitor energy storage devices polysaccharide fungal substrate