@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00080028v1> a dcat:Dataset ;
    dct:description """
              Deintercalated "LixNiO2" materials (x = 0.25, 0.33, 0.50, 0.58, and 0.65) were obtained using the electrochemical route from the Li0.985Ni1.015O2 and Li0.993Ni1.007O2 compounds. Refinements of X-ray diffraction data using the Rietveld method show a good agreement with the phase diagram of the LixNiO2 system studied earlier in this laboratory. Electronic conductivity measurements show a thermally activated electron-hopping process for the deintercalated Li0.5NiO2 phase. In the LixNiO2 materials investigated (x = 0.25, 0.33, 0.50, and 0.58), 7Li NMR shows mobility effects leading to an exchanged signal at room temperature. A clear tendency for Li to be surrounded mainly by Ni3+ ions with the 180 configuration is observed, particularly, for strongly deintercalated materials with smaller Li+ and Ni3+ contents, even upon heating, when this mobility becomes very fast in the NMR time scale. This suggests that Li/vacancy hopping does occur on the NMR time scale but that Ni3+/Ni4+ hopping does not occur independently. The position of Li seems to govern the oxidation state of the Ni around it at any time; the electrons follow the Li ions to satisfy local electroneutrality and minimal energy configuration. The observed NMR shifts are compatible with the Li/vacancy and Ni3+/Ni4+ ordering patterns calculated by Arroyo y de Dompablo et al. for x = 0.25 and x = 0.50, but not for x = 0.33 and x = 0.58.
            """ ;
    dct:identifier "hal-00080028" ;
    dct:issued "2026-05-12T20:07:04.768996"^^xsd:dateTime ;
    dct:language "en" ;
    dct:modified "2026-05-12T20:07:04.769003"^^xsd:dateTime ;
    dct:publisher <https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> ;
    dct:title "Coupled Ion/Electron Hopping in LixNiO2: A 7Li NMR Study" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "CCSD" ] ;
    dcat:distribution <https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00080028v1/resource/00f004d3-9fb8-462f-bcfc-6c3d764521cb> ;
    dcat:keyword "7li",
        "chimmatechemical-sciencesmaterial-chemistry",
        "electron",
        "infoeu-reposemanticsarticle",
        "ion",
        "journal-articles",
        "lithium-batteries",
        "nuclear-magnetic-resonance" ;
    dcat:landingPage <ISSN:%200020-1669> .

<ISSN:%200020-1669> a foaf:Document .

<https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00080028v1/resource/00f004d3-9fb8-462f-bcfc-6c3d764521cb> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2026-05-12T20:07:04.858969"^^xsd:dateTime ;
    dct:modified "2026-05-12T20:07:04.727617"^^xsd:dateTime ;
    dct:title "Coupled Ion/Electron Hopping in LixNiO2: A 7Li NMR Study" ;
    dcat:accessURL <https://hal.science/hal-00080028> .

<https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> a foaf:Agent ;
    foaf:name "test_moissonnage_selune" .