{"entity": "researcher", "timestamp": "2026-06-08T05:39:10.956Z", "family": "Ohlin", "given": "C Andr\u00e9", "initials": "CA", "orcid": "0000-0002-3804-6421", "affiliations": ["Department of Chemistry, Faculty of Science and Technology, Ume\u00e5 University, 907 36 Sweden. andre.ohlin@umu.se."], "links": {"self": {"href": "https://publications.scilifelab.se/researcher/cc8a24c050c04953abf72381de7e9885.json"}, "display": {"href": "https://publications.scilifelab.se/researcher/cc8a24c050c04953abf72381de7e9885"}}, "publications": [{"entity": "publication", "iuid": "1dc349ef9c3a452ea68af92df3a24d5b", "links": {"self": {"href": "https://publications.scilifelab.se/publication/1dc349ef9c3a452ea68af92df3a24d5b.json"}, "display": {"href": "https://publications.scilifelab.se/publication/1dc349ef9c3a452ea68af92df3a24d5b"}}, "title": "Scotch Pine Cones-Derived Hard Carbon as an Anode Material for Sodium-Ion Battery Applications.", "authors": [{"family": "Rao", "given": "Y Bhaskara", "initials": "YB"}, {"family": "Sundman", "given": "Ola", "initials": "O", "orcid": "0000-0002-1705-5249", "researcher": {"href": "https://publications.scilifelab.se/researcher/c15a15210b8a41e0826343602778bc6d.json"}}, {"family": "Holmboe", "given": "Michael", "initials": "M", "orcid": "0000-0003-3927-6197", "researcher": {"href": "https://publications.scilifelab.se/researcher/2d069795b2434c7883f7017855bbb896.json"}}, {"family": "Tavajohi", "given": "Naser", "initials": "N", "orcid": "0000-0002-3973-0938", "researcher": {"href": "https://publications.scilifelab.se/researcher/fa5c356fc0524b31a9593284adf002a4.json"}}, {"family": "Ohlin", "given": "C Andr\u00e9", "initials": "CA", "orcid": "0000-0002-3804-6421", "researcher": {"href": "https://publications.scilifelab.se/researcher/cc8a24c050c04953abf72381de7e9885.json"}}], "type": "journal article", "published": "2025-03-25", "journal": {"title": "ACS Omega", "issn": "2470-1343", "volume": "10", "issue": "11", "pages": "11158-11167", "issn-l": "2470-1343"}, "abstract": "A biobased anode material for sodium-ion batteries (SIBs) was prepared through the simple pyrolysis of Scotch pine cones (Pinus sylvestris, SPC), followed by a heteroatom doping modification. The resulting nitrogen-doped hard carbon exhibited a high reversible capacity of 273 mA\u00b7h\u00b7g-1 at a current density of 25 mA\u00b7g-1 compared to the undoped material (197 mA\u00b7h\u00b7g-1). X-ray diffraction analysis shows that the produced hard carbon from the biomass is highly amorphous in nature, and high-resolution transmission electron microscopy images reveal the presence of localized graphite-like structures that are found to be beneficial for the storage and transport of Na+ ions during charging/discharging. Experimental results demonstrated that the increased specific surface area (S BET = 424 m2\u00b7g-1), high micropore volume (0.177 cm3\u00b7g-1), and expanded interlayer spacing (>3.7 \u00c5) and a high Na+-ion diffusion coefficient (3.08 \u00d7 10-16 cm2\u00b7s-1) facilitated the diffusion of sodium ions, leading to a high capacity retention of 80% after 250 cycles for the SPC-N material over the undoped one, SPC (71%). This study highlights the potential of low-cost, widely available biobased Scotch pine cones as an alternative anode material to enhance the sustainability of SIB production.", "doi": "10.1021/acsomega.4c10363", "pmid": "40160790", "labels": {"Integrated Microscopy Technologies Ume\u00e5": "Service"}, "xrefs": [{"db": "pmc", "key": "PMC11948143"}], "notes": [], "created": "2025-10-30T12:06:03.272Z", "modified": "2025-10-30T12:06:03.595Z"}, {"entity": "publication", "iuid": "59dbc502a5354b9396c1d2f8cf1c7ace", "links": {"self": {"href": "https://publications.scilifelab.se/publication/59dbc502a5354b9396c1d2f8cf1c7ace.json"}, "display": {"href": "https://publications.scilifelab.se/publication/59dbc502a5354b9396c1d2f8cf1c7ace"}}, "title": "Polyoxoniobates as molecular building blocks in thin films.", "authors": [{"family": "Rambaran", "given": "Mark A", "initials": "MA", "orcid": "0000-0003-1054-221X", "researcher": {"href": "https://publications.scilifelab.se/researcher/cbfccbdb1f6b460cb2400194a4347ab4.json"}}, {"family": "Gorzs\u00e1s", "given": "Andr\u00e1s", "initials": "A", "orcid": "0000-0002-2298-8844", "researcher": {"href": "https://publications.scilifelab.se/researcher/8070792ccead4c809c89943d84cf0e03.json"}}, {"family": "Holmboe", "given": "Michael", "initials": "M", "orcid": "0000-0003-3927-6197", "researcher": {"href": "https://publications.scilifelab.se/researcher/2d069795b2434c7883f7017855bbb896.json"}}, {"family": "Ohlin", "given": "C Andr\u00e9", "initials": "CA", "orcid": "0000-0002-3804-6421", "researcher": {"href": "https://publications.scilifelab.se/researcher/cc8a24c050c04953abf72381de7e9885.json"}}], "type": "journal article", "published": "2021-11-16", "journal": {"title": "Dalton Trans", "issn": "1477-9234", "issn-l": null, "volume": "50", "issue": "44", "pages": "16030-16038"}, "abstract": "Niobium oxide thin films have been prepared by spin-coating aqueous solutions of tetramethylammonium salts of the isostructural polyoxometalate clusters [Nb10O28]6-, [TiNb9O28]7- and [Ti2Nb8O28]8- onto silicon wafers, and annealing them. The [Nb10O28]6- cluster yields films of Nb2O5 in the orthorhombic and monoclinic crystal phases when annealed at 800 \u00b0C and 1000 \u00b0C, respectively, whereas the [TiNb9O28]7- and [Ti2Nb8O28]8- clusters yield the monoclinic crystal phases of Ti2Nb12O29 and TiNb2O7 (titanium-niobium oxides) in different ratios. We also demonstrate a protocol for depositing successive layers of metal oxide films. Finally, we explore factors affecting the roughness of the films.", "doi": "10.1039/d1dt03116c", "pmid": "34613326", "labels": {"Integrated Microscopy Technologies Ume\u00e5": "Service"}, "xrefs": [], "notes": [], "created": "2022-04-01T07:19:23.793Z", "modified": "2022-04-01T07:19:38.908Z"}, {"entity": "publication", "iuid": "ba64c3358adb43f997775bfa9de10fd3", "links": {"self": {"href": "https://publications.scilifelab.se/publication/ba64c3358adb43f997775bfa9de10fd3.json"}, "display": {"href": "https://publications.scilifelab.se/publication/ba64c3358adb43f997775bfa9de10fd3"}}, "title": "Microwave Synthesis of Alkali\u2010Free Hexaniobate, Decaniobate, and Hexatantalate Polyoxometalate Ions", "authors": [{"family": "Rambaran", "given": "Mark A", "initials": "MA", "orcid": "0000-0003-1054-221X", "researcher": {"href": "https://publications.scilifelab.se/researcher/cbfccbdb1f6b460cb2400194a4347ab4.json"}}, {"family": "Pascual\u2010Borr\u00e0s", "given": "Magda", "initials": "M", "orcid": "0000-0001-9919-1334", "researcher": {"href": "https://publications.scilifelab.se/researcher/97763ba5383b430f9a91020bb68282b2.json"}}, {"family": "Ohlin", "given": "C Andr\u00e9", "initials": "CA", "orcid": "0000-0002-3804-6421", "researcher": {"href": "https://publications.scilifelab.se/researcher/cc8a24c050c04953abf72381de7e9885.json"}}], "type": "journal-article", "published": "2019-09-22", "journal": {"title": "Eur. J. Inorg. Chem.", "issn": "1434-1948", "volume": "2019", "issue": "35", "pages": "3913-3918", "issn-l": null}, "abstract": null, "doi": "10.1002/ejic.201900750", "pmid": null, "labels": {"Swedish NMR Centre": "Service"}, "xrefs": [], "notes": [], "created": "2019-11-22T14:29:54.703Z", "modified": "2025-10-17T13:03:57.555Z"}]}