Fe 3+ /Mo 6+ -Codoped ZnWO 4 @rGO Supercapacitor Electrode Material with Defect–Electron Transport–Interface Trinity Regulation and Its Electrochemical Energy Storage Performance
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Le résumé fourni par la source
In order to improve the low conductivity, slow reaction kinetics, and poor mechanical stability of zinc tungstate (ZnWO 4 ) as a supercapacitor electrode material, the strategy of hydrothermal synthesis of Fe 3+ /Mo 6+ -codoped ZnWO 4 composite graphene oxide (FM-ZWO@rGO) was proposed. Among them, Fe 3+ doping induced a high concentration of oxygen vacancies ( V O ••, concentration increased by 8.33%), which significantly improved the redox activity of the material. Mo 6+ doping reduces the charge transfer energy barrier by introducing low-level orbitals to regulate the energy level positions of the valence band (VB) and conduction band (CB). The two synergistically further inhibit the longitudinal growth of the crystal, form a high-specific-surface-area spherical morphology and defect network, and optimize the ion diffusion path. In terms of improving cycle stability, rGO is anchored by chemical bonding and layered-coated with doped particles to buffer the volume strain during the cycle, effectively inhibiting structural collapse and active material dissolution. The electrochemical performance of ZnWO 4 was enhanced by the trinity of defect engineering–electron transport optimization–interface reinforcement, so that F 0.03 M 0.03 -ZWO@rGO exhibited the ideal specific capacity (1 A g –1 1027.05 F g –1 ) and cycle stability (20 A g –1 101.2% after 5000 cycles). It shows the great potential of the trinity strategy to improve the electrochemical performance of supercapacitors and provides an idea for the preparation of high-performance bimetallic oxide electrode materials.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé, mais le titre doit être comparé manuellement.
- Titre Crossref
- Fe <sup>3+</sup> /Mo <sup>6+</sup> -Codoped ZnWO <sub>4</sub> @rGO Supercapacitor Electrode Material with Defect–Electron Transport–Interface Trinity Regulation and Its Electrochemical Energy Storage Performance
- Date Crossref
- 31/10/2025
- Éditeur
- American Chemical Society (ACS)
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Xi'an University of Architecture and Technology pays non établi dans la noticeUniversité ou école supérieure
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Northwest University pays non établi dans la noticeUniversité ou école supérieure
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Shaanxi Coal Chemical Industry Technology Research Institute pays non établi dans la noticeStructure de recherche
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College of Materials Science and Engineering pays non établi dans la noticeUniversité ou école supérieure
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Science and Technology Department pays non établi dans la noticeInstitution
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Shaanxi Chemical Research Institute Co. Science and Technology Department pays non établi dans la noticeStructure de recherche
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School of Environmental and Municipal Engineering pays non établi dans la noticeUniversité ou école supérieure
Xi'an University of Architecture and Technology, Northwest University et Shaanxi Coal Chemical Industry Technology Research Institute, avec 4 autres affiliations.
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