{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["5(9)"],"submitter":["Miyake J"],"pubmed_abstract":["Proton exchange membranes (PEMs), Nafion as a representative, are one of the key materials for energy-converting devices such as fuel cells, water electrolyzers, and redox flow batteries. Recently, environmental concerns regarding perfluoro compounds (e.g., PFAS) have been issues; thus, synthesis of PEMs with mitigated environmental impact is highly demanded. In this paper, we describe that a one-pot synthesis from cellulose provides highly proton conductive cellulose-based PEMs (<b>SC-1</b>) very effectively. The <b>SC-1</b> with ion exchange capacity ranging from 1.07-1.49 mmol g<sup>-1</sup> was successfully prepared by controlling the feed molar ratio of the reactants. <sup>1</sup>H NMR spectra, titration, and elemental analysis supported the successful synthesis of <b>SC-1</b> with a high purity and well-defined structure. Consequently, our synthetic method provided <b>SC-1</b> with a high degree of substitution (1.87-2.48), which was advantageous for membrane properties. For example, the maximum H<sup>+</sup> conductivity of the <b>SC-1</b> membranes exceeded 140 mS cm<sup>-1</sup> (in water at 60 °C) with a suppressed water uptake value (69%), which is one of the best performances among cellulose-based PEMs. The <b>SC-1</b> membranes also showed good acid resistivity in 2 M H<sub>2</sub>SO<sub>4</sub> at 30 °C for 24 h."],"journal":["JACS Au"],"pagination":["4165-4169"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC12458048"],"repository":["biostudies-literature"],"pubmed_title":["Cellulose Proton Conductor: Both Sulfonic Acid and Hydrophobic Group Functionalization Enable High Proton Conductivity."],"pmcid":["PMC12458048"],"pubmed_authors":["Miyake J"],"additional_accession":[]},"is_claimable":false,"name":"Cellulose Proton Conductor: Both Sulfonic Acid and Hydrophobic Group Functionalization Enable High Proton Conductivity.","description":"Proton exchange membranes (PEMs), Nafion as a representative, are one of the key materials for energy-converting devices such as fuel cells, water electrolyzers, and redox flow batteries. Recently, environmental concerns regarding perfluoro compounds (e.g., PFAS) have been issues; thus, synthesis of PEMs with mitigated environmental impact is highly demanded. In this paper, we describe that a one-pot synthesis from cellulose provides highly proton conductive cellulose-based PEMs (<b>SC-1</b>) very effectively. The <b>SC-1</b> with ion exchange capacity ranging from 1.07-1.49 mmol g<sup>-1</sup> was successfully prepared by controlling the feed molar ratio of the reactants. <sup>1</sup>H NMR spectra, titration, and elemental analysis supported the successful synthesis of <b>SC-1</b> with a high purity and well-defined structure. Consequently, our synthetic method provided <b>SC-1</b> with a high degree of substitution (1.87-2.48), which was advantageous for membrane properties. For example, the maximum H<sup>+</sup> conductivity of the <b>SC-1</b> membranes exceeded 140 mS cm<sup>-1</sup> (in water at 60 °C) with a suppressed water uptake value (69%), which is one of the best performances among cellulose-based PEMs. The <b>SC-1</b> membranes also showed good acid resistivity in 2 M H<sub>2</sub>SO<sub>4</sub> at 30 °C for 24 h.","dates":{"release":"2025-01-01T00:00:00Z","publication":"2025 Sep","modification":"2026-06-03T20:19:19.134Z","creation":"2026-05-01T03:10:46.572Z"},"accession":"S-EPMC12458048","cross_references":{"pubmed":["41001653"],"doi":["10.1021/jacsau.5c00547"]}}