Otun K.O., Diop N.F., Fasakin O. et al. · RSC Advances · 2025 · 4120-4136
Open a family to keep every result attached to its sample, method and conditions.
Paraphrased for this database from the authors’ stated interpretations — never quoted verbatim — and kept separate from reported measurements.
The ZnCo-MOF-HMIM//AC asymmetric device delivers 28.2 W h kg^-1 at 1025.4 W kg^-1 and retains 80.0% capacity after 10000 cycles.
Caveat: Device results include activated carbon and electrode additives, so they should not be treated as intrinsic MOF conductivity.
15 · 3.1.2 Two-electrode measurement · Fig. 14, Table 2 · Linked to 4 structured results
ZnCo-MOF-HMIM has the highest reported surface area and pore volume of the three ligand-mediated MOFs, and also the highest three-electrode specific capacity.
Caveat: Surface area and electrochemical capacity are reported on powder and composite electrode forms, respectively.
8-11 · 3 Results and discussion · Fig. 7, Fig. 10 · Linked to 3 structured results
Changing HMIM, BDC and ABDC linkers under the same synthesis protocol changes ZnCo-MOF structure and morphology, giving dodecahedron, cross-like and rod-like materials.
Caveat: The exact crystallographic structures/topologies are not solved; SI Table S1 verifies ligand identities but does not provide structural models.
15 · 4 Conclusions · Linked to 6 structured results
The authors link the better HMIM electrode/device stability to imidazolate coordination, hydrophobic methyl groups, pi-pi interactions and synergistic Zn/Co framework stability.
Caveat: This is a proposed structure-property interpretation supported by electrochemical cycling and EIS; no in situ post-cycling structural analysis was reported.
11,15 · 3.1.1 and Conclusions · Fig. 10e, Fig. 14 · Linked to 2 structured results
Lower ESR and Rct for the HMIM-based electrode are used as evidence for improved charge dynamics, electrical conductivity and electrode/electrolyte charge transfer relative to BDC and ABDC analogues.
Caveat: EIS values are for binder/conductive-additive composite electrodes, not isolated MOF pellets or single crystals.
11 · 3.1.1 Three-electrode evaluation · Fig. 10d · Linked to 6 structured results
The authors attribute charge storage to reversible redox reactions of Zn/Co nodes with OH- plus ligand contributions, giving mixed diffusion/capacitive pseudocapacitive behaviour.
Caveat: Mechanistic assignments are inferred from CV shape, b-values and Dunn analysis rather than direct in situ chemical-state tracking.
11-12 · 3.1.1 Three-electrode evaluation · Fig. 10f, Fig. 12 · Linked to 5 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| ZnCo-MOF-HMIM//AC asymmetric supercapacitor device | Composite device of ZnCo-MOF-HMIM electrode and activated carbon electrodeZn2+ and Co2+ in the MOF electrode · HMIM in ZnCo-MOF-HMIM; activated carbon from peanut shell as counter electrode material | unknown · CompositeAsymmetric two-electrode device assembled from ZnCo-MOF-HMIM and peanut-shell activated carbon in 6 M KOH. | 13 · 3.1.2 Two-electrode measurement · Fig. 13, Fig. 14, Table 2 |
| ZnCo-MOF-ABDC | Zn/Co bimetallic MOF with 2-aminoterephthalate linker; exact formula not reportedZn2+ and Co2+ · 2-aminoterephthalic acid / 2-amino-benzenedicarboxylic acid (ABDC; O and N donors) | 3D · PristineCrystalline bimetallic ZnCo-MOF; SEM/TEM described closely packed elliptical rods / rod-like shapes; XRD peaks at 14.51, 26.72 and 39.4 degrees assigned to amino benzene carboxylic acid coordination. | 2 · Introduction / Results · Fig. 3, Fig. 5 |
| ZnCo-MOF-BDC | Zn/Co bimetallic MOF with terephthalate linker; exact formula not reportedZn2+ and Co2+ · terephthalic acid / 1,4-benzenedicarboxylic acid (BDC; O-donor) | 3D · PristineCrystalline bimetallic ZnCo-MOF; SEM/TEM described elliptical cross-like morphology; XRD peaks at 17.31, 25.25 and 27.62 degrees confirm benzene-carboxylic acid coordination. | 2 · Introduction / Results · Fig. 3, Fig. 5 |
| ZnCo-MOF-HMIM | Zn/Co bimetallic MOF with 2-methylimidazolate linker; exact formula not reportedZn2+ and Co2+ · 2-methylimidazole (HMIM; N-donor imidazole with hydrophobic -CH3 group) | 3D · PristineCrystalline bimetallic ZnCo-MOF; SEM described dodecahedron morphology and TEM described octahedron-like smooth particles; XRD peaks assigned to Zn-MOF/Co-MOF planes and HMIM ligand-related reflections. | 1-2 · Abstract and Introduction |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| ZnCo-MOF-HMIM//AC asymmetric two-electrode deviceresearch_0615__mat__mat_znco_hmim_ac_device | Electrode · Composite Sample · Composite | 6 M KOH electrolyte; coated masses reported as 3.2 mg cm^-2 and 0.8 mg cm^-2 for negative and positive electrodes, total device electrode mass 4.0 mg cm^-2.two-electrode supercapacitor cell | 13 · 3.1.2 Two-electrode measurement |
| ZnCo-MOF-ABDC/Ni-foam working electroderesearch_0615__mat__mat_znco_mof_abdc | Electrode · Composite Sample · Composite | ZnCo-MOF-ABDC active material mixed with acetylene black and PVDF (8:1:1), NMP slurry, coated on Ni foam, dried 60 C for 12 h; active mass loading 3.2 mg.pre-cleaned Ni foam, 1 cm x 1 cm | 3 · 2.4 Electrode preparation |
| ZnCo-MOF-BDC/Ni-foam working electroderesearch_0615__mat__mat_znco_mof_bdc | Electrode · Composite Sample · Composite | ZnCo-MOF-BDC active material mixed with acetylene black and PVDF (8:1:1), NMP slurry, coated on Ni foam, dried 60 C for 12 h; active mass loading 2.5 mg.pre-cleaned Ni foam, 1 cm x 1 cm | 3 · 2.4 Electrode preparation |
| ZnCo-MOF-HMIM/Ni-foam working electroderesearch_0615__mat__mat_znco_mof_hmim | Electrode · Composite Sample · Composite | ZnCo-MOF-HMIM active material mixed with acetylene black and PVDF (8:1:1), NMP slurry, coated on Ni foam, dried 60 C for 12 h; active mass loading 3.0 mg.pre-cleaned Ni foam, 1 cm x 1 cm | 3 · 2.4 Electrode preparation |
| organic ligand precursor set (HMIM, BDC, ABDC)research_0615__mat__mat_znco_mof_hmim | Unknown · Paper Level Unspecified · Unknown | Commercial ligand precursors used without additional purification. | 1 · Table S1 · Table S1 |
| as-synthesised ZnCo-MOF-ABDC powderresearch_0615__mat__mat_znco_mof_abdc | Powder · Target Sample · Mixed Metal | Solvothermal/hydrothermal product, centrifuged, washed with DMF and ethanol, dried overnight at 70 C in vacuum. | 2 · 2.2 Preparation of ZnCo-MOFs with three different ligands |
| as-synthesised ZnCo-MOF-BDC powderresearch_0615__mat__mat_znco_mof_bdc | Powder · Target Sample · Mixed Metal | Solvothermal/hydrothermal product, centrifuged, washed with DMF and ethanol, dried overnight at 70 C in vacuum. | 2 · 2.2 Preparation of ZnCo-MOFs with three different ligands |
| as-synthesised ZnCo-MOF-HMIM powderresearch_0615__mat__mat_znco_mof_hmim | Powder · Target Sample · Mixed Metal | Solvothermal/hydrothermal product, centrifuged, washed with DMF and ethanol, dried overnight at 70 C in vacuum. | 2 · 2.2 Preparation of ZnCo-MOFs with three different ligands |