High specific capacitance supercapacitors from hierarchically organized all-cellulose composites Hobisch, Mathias A. Mourad, Eléonore Fischer, Wolfgang J. Prehal, Christian Eyley, Samuel Childress, Anthony Zankel, Armin Mautner, Andreas Breitenbach, Stefan Rao, Apparao M. Thielemans, Wim Freunberger, Stefan Alexander ; https://orcid.org/0000-0003-2902-5319 Eckhart, Rene Bauer, Wolfgang Spirk, Stefan ddc:540 Here, we employ micro- and nanosized cellulose particles, namely paper fines and cellulose nanocrystals, to induce hierarchical organization over a wide length scale. After processing them into carbonaceous materials, we demonstrate that these hierarchically organized materials outperform the best materials for supercapacitors operating with organic electrolytes reported in literature in terms of specific energy/power (Ragone plot) while showing hardly any capacity fade over 4,000 cycles. The highly porous materials feature a specific surface area as high as 2500 m2ˑg-1 and exhibit pore sizes in the range of 0.5 to 200 nm as proven by scanning electron microscopy and N2 physisorption. The carbonaceous materials have been further investigated by X-ray photoelectron spectroscopy and RAMAN spectroscopy. Since paper fines are an underutilized side stream in any paper production process, they are a cheap and highly available feedstock to prepare carbonaceous materials with outstanding performance in electrochemical applications. 2020 info:eu-repo/semantics/preprint doc-type:preprint text http://purl.org/coar/resource_type/c_816b https://research-explorer.ista.ac.at/record/8081 https://research-explorer.ista.ac.at/download/8081/8082 https://research-explorer.ista.ac.at/download/8081/8102 Hobisch MA, Mourad E, Fischer WJ, et al. High specific capacitance supercapacitors from hierarchically organized all-cellulose composites. eng info:eu-repo/semantics/openAccess