133377 20260217205504.0 doi 10.1016/j.biombioe.2024.107197 sideral 138058 ART-2024-138058 eng Antorán, Daniel Universidad de Zaragoza Enhancing waste hemp hurd-derived anodes for sodium-ion batteries through hydrochloric acid-mediated hydrothermal pretreatment 2024 Access copy available to the general public Unrestricted Waste hemp hurd (WHH) was used as a sustainable feedstock for producing hard carbon-based anodes for sodium-ion batteries (SIBs). Two easily scalable production pathways were tested and compared: (1) pyrolysis (at 500 °C) and subsequent annealing at 800, 1000 or 1200 °C, and (2) hydrothermal pretreatment (at 180 °C) and subsequent annealing at the above-mentioned highest temperatures. Results indicated that when a HCl (2 mol m−3) aqueous solution was used as hydrothermal medium, the textural, structural and surface chemistry features linked to the electrochemical performance of the resulting hard carbons improved. The WHH-derived electrode produced via HCl-mediated hydrothermal pretreatment and subsequent annealing at 1000 °C showed an exceptional electrochemical performance in terms of specific capacity (535 mA h g−1 at 30 mA g−1) and rate capability (372, 156, 115, and 83 mA h g−1 at 0.1, 0.5, 1, and 2 A g−1, respectively) when an ester-based electrolyte was used (NaTFSI in EC/DMC). Using an ether-based electrolyte (NaPF6 in diglyme) improved both the ICE (from 69% to 78%) and cycling stability (85% of capacity retention after 300 cycles at 1 A g−1; 91% when current rate returned to 0.1 A g−1). In summary, relatively low-cost WHH-derived carbons are able to deliver an exceptional performance, much better than that reported so far for other biomass-derived carbons, and even close to that exhibited by more expensive and complex composite and hybrid materials. info:eu-repo/grantAgreement/ES/DGA-FEDER/T22-23R info:eu-repo/grantAgreement/ES/MICINN/PID2029-107737RB-I00 info:eu-repo/semantics/openAccess by-nc-nd https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es 5.8 2024 BIOTECHNOLOGY & APPLIED MICROBIOLOGY 21 / 177 = 0.119 2024 Q1 T1 AGRICULTURAL ENGINEERING 3 / 20 = 0.15 2024 Q1 T1 ENERGY & FUELS 65 / 182 = 0.357 2024 Q2 T2 1.16 2024 Agronomy and Crop Science 2024 Q1 Waste Management and Disposal 2024 Q1 Forestry 2024 Q1 Renewable Energy, Sustainability and the Environment 2024 Q2 11.0 2024 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Alvira, Darío Universidad de Zaragoza (orcid)0000-0002-5526-3962 Sebastián, Víctor Universidad de Zaragoza (orcid)0000-0002-6873-5244 Manyà, Joan J. Universidad de Zaragoza (orcid)0000-0002-0118-3254 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 5005 X Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Proy. investigación HKA 184 (2024), 107197 [13 pp.] Biomass bioenergy BIOMASS & BIOENERGY 0961-9534 15915394 http://zaguan.unizar.es/record/133377/files/texto_completo.pdf Versión publicada 2514284 http://zaguan.unizar.es/record/133377/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:133377 articulos driver 2026-02-17-20:23:00 ARTICLE