Iqbal M.Z., Shaheen M., Siddique S. et al. · Journal of Energy Storage · 2023 · 107361
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.
Cu-MOF//AC is more stable during cycling than Ni-MOF//AC, retaining 95% capacity after 3000 GCD cycles compared with 84% for Ni-MOF//AC.
Caveat: Stability comparison is based on device-level measurements rather than pristine-powder ageing.
8 · 4. Conclusion · Fig. 6b · Linked to 3 structured results
Ni3(HHTP)2 is the more favourable electrode material for energy-storage performance, with higher surface area, lower ESR, higher specific capacity, energy density and power density than Cu3(HHTP)2-based device.
Caveat: Device samples include AC and slurry components; no direct electrical conductivity value is reported.
8 · 4. Conclusion · Linked to 10 structured results
Although the authors discuss conductivity as a performance factor, the paper does not report a direct electrical-transport measurement or numerical conductivity value for the MOFs.
Caveat: EIS/ESR are electrochemical resistance metrics, not intrinsic electronic conductivity.
4 · 3.2. Three cell assembly performance of Ni-MOF and Cu-MOF · Fig. 4c · Linked to 4 structured results
The superior Ni-MOF performance is attributed to higher porosity, eclipsed structure, larger Ni ionic radius/lattice spacing and easier OH- intercalation compared with slipped-parallel Cu-MOF.
Caveat: Mechanistic assignment is argued from structural/electrochemical trends; no direct ion-intercalation measurement is reported.
5 · 3.2. Three cell assembly performance of Ni-MOF and Cu-MOF · Linked to 4 structured results
The MOF electrodes and MOF//AC devices show Faradic or hybrid Faradic/double-layer behaviour, evidenced by redox peaks, non-linear GCD humps and Dunn-model separation of capacitive/diffusive current.
Caveat: Kinetic contributions from Dunn plots were mostly reported graphically and qualitative/visual-estimate values are flagged.
6 · 3.3. Evaluation of Ni-MOF and Cu-MOF based battery-supercapacitor hybrids · Fig. 5 · Linked to 4 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Activated carbon (AC) | Not specified | unknown · UnknownCapacitive counter electrode material for hybrid devices. | 2 · Materials and method |
| Cu-MOF; Cu3(HHTP)2Browse family: Cu₃(HHTP)₂ / Cu–HHTP | Cu3(HHTP)2Cu ions; text discusses mixed oxidation states of metal and ligand · HHTP (2,3,6,7,10,11-hexahydroxytriphenylene) | 2D · Pristine2D conjugated c-MOF with hexagonal conjugated framework; described as slipped-parallel relative to Ni analogue. | 2 · Introduction |
| Cu-MOF//AC hybrid battery-supercapacitor device | Not specifiedCu-MOF working electrode plus AC counter electrode · HHTP in Cu-MOF component | 2D · CompositeAsymmetric hybrid device combining Faradic Cu-MOF electrode and capacitive activated-carbon electrode. | 6 · 3.3. Evaluation of Ni-MOF and Cu-MOF based battery-supercapacitor hybrids · Fig. 5 |
| Ni-MOF; Ni3(HHTP)2Browse family: Ni₃(HHTP)₂ / Ni–HHTP | Ni3(HHTP)2Ni ions; text states nickel only exhibits +2 oxidation state · HHTP (2,3,6,7,10,11-hexahydroxytriphenylene) | 2D · Pristine2D conjugated c-MOF with hexagonal conjugated framework; described as eclipsed relative to Cu analogue. | 2 · Introduction |
| Ni-MOF//AC hybrid battery-supercapacitor device | Not specifiedNi-MOF working electrode plus AC counter electrode · HHTP in Ni-MOF component | 2D · CompositeAsymmetric hybrid device combining Faradic Ni-MOF electrode and capacitive activated-carbon electrode. | 6 · 3.3. Evaluation of Ni-MOF and Cu-MOF based battery-supercapacitor hybrids · Fig. 5 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Activated-carbon electroderesearch_0787__mat__activated_carbon | Electrode · Composite Component · Composite | Slurry electrode; three-electrode AC control and device counter electrode.Nickel foam, 1 x 1 cm2 coated area | Performance of AC in three cell assembly · Fig. 1.3 |
| Cu-MOF//AC hybrid supercapacitorresearch_0787__mat__cu_hhtp_ac_device_material | Electrode · Composite Sample · Composite | Mass-balanced asymmetric device; Cu-MOF and AC deposited masses in 0.5:1 ratio.Two-electrode device using MOF working electrode and AC counter electrode | Section 1.1 Charge balance |
| Cu-MOF slurry electrode on nickel foamresearch_0787__mat__cu_hhtp | Electrode · Composite Sample · Composite | Slurry deposited on nickel foam; three-electrode measurements used 4 mg active loading.Nickel foam, 1 x 1 cm2 coated area | 3 · 2.3. Structural and electrochemical characterizations |
| As-synthesised Cu-MOF crystals/powderresearch_0787__mat__cu_hhtp | Powder · Pristine Control · Pristine Framework | Washed by centrifugation with DI water and acetone, then dried. | 2 · 2.2. Synthesis of Ni-MOF, Cu-MOF and activated carbon (AC) · Fig. 1 |
| Ni-MOF//AC hybrid supercapacitorresearch_0787__mat__ni_hhtp_ac_device_material | Electrode · Composite Sample · Composite | Mass-balanced asymmetric device; Ni-MOF and AC deposited masses in 1:2.2 ratio.Two-electrode device using MOF working electrode and AC counter electrode | Section 1.1 Charge balance |
| Ni-MOF slurry electrode on nickel foamresearch_0787__mat__ni_hhtp | Electrode · Composite Sample · Composite | Slurry deposited on nickel foam; three-electrode measurements used 4 mg active loading.Nickel foam, 1 x 1 cm2 coated area | 3 · 2.3. Structural and electrochemical characterizations |
| As-synthesised Ni-MOF crystals/powderresearch_0787__mat__ni_hhtp | Powder · Pristine Control · Pristine Framework | Washed by centrifugation with DI water and acetone, then dried. | 2 · 2.2. Synthesis of Ni-MOF, Cu-MOF and activated carbon (AC) · Fig. 1 |