Khan Z.U., Jiang J., Zeb S. · Journal of Materials Science: Materials in Electronics · 2026 · 152
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 Zn-doped Ni/Fe-MOF//AC aqueous ASC is claimed to provide practical high-performance storage with 1.8 V operation, 23.45 Wh kg-1 energy density, 803.77 W kg-1 power density and 89.42% retention after 5000 cycles.
Caveat: Table S1 provides electrode masses/loadings/compositions/drying, but current collector and slurry solvent are still not specified.
main p.15-17 · 3.3 ASC; Table 3 · Fig. 7; Table 3 · Linked to 9 structured results
Zn-doped Ni/Fe-MOF is the best three-electrode material in the reported series, giving the highest GCD capacitance and the lowest Rct/Rs values.
Caveat: The active material may be a MOF-derived carbon composite rather than an unpyrolysed pristine MOF.
main p.12-14 · 3.2 Electrochemical investigation · Table 2; Fig. 6e · Linked to 6 structured results
The paper alternates between describing the target as Zn-doped Ni/Fe-MOF and as a Zn-doped Ni/Fe-MOF-derived carbon composite after 600 C nitrogen pyrolysis.
Caveat: Database users should treat the electroactive target as derived/pyrolysed where carbonisation-dependent data are reported, although the authors often keep the shorthand Zn-doped Ni/Fe-MOF.
main p.3-4 and p.8-9 · 2.1.3 Synthesis; 3.1 Physical characterization · Fig. 3c · Linked to 3 structured results
The larger BET surface area and hierarchical meso/macroporosity of the Zn-doped material are linked to improved ion accessibility, faster redox kinetics and higher capacitance.
Caveat: Pore-size distribution is discussed qualitatively; exact pore volumes and pore diameters are not reported in text.
main p.9 · 3.1 Physical characterization · Fig. 3d-f · Linked to 4 structured results
Zn incorporation into the bimetallic Ni/Fe-MOF is claimed to improve electronic conductivity, create additional electroactive sites, and accelerate ion transport.
Caveat: No direct four-probe or conductivity value is reported; electrical conductivity is inferred from EIS, CV area, porosity and optical/electrochemical behaviour.
main p.1 and p.16 · Abstract; Conclusion · Linked to 6 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Activated carbon (AC) | CarbonNone · None | unknown · UnknownDisordered, partially graphitic activated carbon with oxygen-containing surface groups. | SI rendered p.2-3 · Supplementary activated carbon characterisation · Fig. S1 |
| Fe-MOF | Fe-based terephthalate MOF; exact empirical formula not reportedFe nodes from FeCl3.6H2O · Terephthalic acid / BDC | unknown · PristineFe-MOF with peaks at ca. 9.6, 16.9, 20.5 and 25.1 degrees 2theta; compared with MIL-53(Fe), JCPDS No. 01-089-8307. | main p.3 and p.7 · 2.1.2 Synthesis of Ni-MOF and Fe-MOF; 3.1 Physical characterization · Fig. 3a |
| Bimetallic Ni/Fe-MOF | Ni/Fe terephthalate MOF; exact empirical formula not reportedMixed Ni and Fe nodes from Ni(NO3)2.6H2O and FeCl3.6H2O · Terephthalic acid / BDC | unknown · PristineHybrid crystalline framework containing diffraction features from both Ni-MOF and Fe-MOF, with reflections at ca. 10.2, 17.8, 22.8 and 30.1 degrees 2theta. | main p.4 and p.7 · 2.1.3 Synthesis of Ni/Fe-MOF and Zn-doped Ni/Fe-MOF; 3.1 Physical characterization · Fig. 3a |
| Ni-MOF | Ni-based terephthalate MOF; exact empirical formula not reportedNi nodes from Ni(NO3)2.6H2O · Terephthalic acid / 1,4-benzenedicarboxylic acid (BDC) | unknown · PristineNi-based MOF with reflections at ca. 11.6, 18.2, 22.9, 31.0 and 35.5 degrees 2theta; assigned to a well-ordered crystalline framework, JCPDS No. 15-0806. | main p.3 and p.7 · 2.1.2 Synthesis of Ni-MOF and Fe-MOF; 3.1 Physical characterization · Fig. 3a |
| Zn-doped Ni/Fe-MOF | Zn-doped Ni/Fe terephthalate MOF; exact empirical formula not reportedNi, Fe and Zn centres from Ni(NO3)2.6H2O, FeCl3.6H2O and ZnCl2 · Terephthalic acid / BDC | unknown · PristineZn incorporation broadens diffraction peaks, gives a dominant reflection around 9-12 degrees, and is interpreted as lattice distortion/framework disorder caused by Zn2+ substitution. | main p.3-4 and p.7 · 2.1.3 Synthesis of Ni/Fe-MOF and Zn-doped Ni/Fe-MOF; 3.1 Physical characterization · Fig. 3a |
| Zn-doped Ni/Fe-MOF//AC asymmetric supercapacitor | Zn-doped Ni/Fe-MOF positive electrode paired with activated carbon negative electrode in 2 M KOHNi/Fe/Zn active positive electrode; carbon negative electrode has no metal nodes · BDC-derived positive-electrode framework/carbon; activated carbon negative electrode | unknown · CompositeTwo-electrode aqueous ASC device with a 1.8 V operating window. | main p.15-16 · 3.3 Asymmetric supercapacitor (ASC) · Fig. 7 |
| Zn-doped Ni/Fe-MOF-derived carbon/metal oxide nanocomposite | MOF-derived carbon matrix decorated with Zn, Ni and Fe metal/oxide nanoparticles; exact formula not reportedZn, Ni and Fe oxide/metal nanoparticles embedded in carbon after pyrolysis · BDC-derived carbon framework after ligand decomposition | unknown · DerivedThin curved sheet-like MOF-derived carbon composite with graphitic/disordered carbon bands and residual low-frequency metal/oxide signal. | main p.3-4 and p.8-9 · 2.1.3 Synthesis; 3.1 Physical characterization · Figs. 2j-l; Fig. 3c |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Activated carbon negative electroderesearch_0546__mat__activated_carbon | Electrode · Composite Component · Composite | 90 wt% activated carbon / 10 wt% PVDF; dried at 100 C in an oven for 10 h.ASC negative electrode, electrode area 1.00 cm2; current collector/substrate not specified. · Active material mass 10.0 mg; mass loading 10.0 mg cm-2. | SI rendered p.3 · Table S1 electrode preparation details · Table S1 |
| Fe-MOF on glassy carbon electroderesearch_0546__mat__fe_mof | Electrode · Pristine Control · Composite | Sample dispersion drop-cast onto GC and dried at 50 C in vacuum oven for 3 h.Glassy carbon working electrode; active material loading ca. 0.14 mg cm-2. · Mass loading approximately 0.14 mg cm-2 | main p.4 and p.12 · 2.3 Electrochemical analysis · Fig. 5 |
| Fe-MOF powderresearch_0546__mat__fe_mof | Powder · Pristine Control · Pristine Framework | Solvothermal product washed, centrifuged and dried at 90 C for 4 h. | main p.3 · 2.1.2 Synthesis of Ni-MOF and Fe-MOF |
| Ni/Fe-MOF on glassy carbon electroderesearch_0546__mat__ni_fe_mof | Electrode · Pristine Control · Composite | Sample dispersion drop-cast onto GC and dried at 50 C in vacuum oven for 3 h.Glassy carbon working electrode; active material loading ca. 0.14 mg cm-2. · Mass loading approximately 0.14 mg cm-2 | main p.4 and p.12 · 2.3 Electrochemical analysis · Fig. 5 |
| Ni/Fe-MOF control powderresearch_0546__mat__ni_fe_mof | Powder · Pristine Control · Mixed Metal | Prepared by the same protocol as the Zn-doped material, omitting ZnCl2; exact post-treatment extent is ambiguous. | main p.4 · 2.1.3 Synthesis of Ni/Fe-MOF and Zn-doped Ni/Fe-MOF |
| Ni-MOF on glassy carbon electroderesearch_0546__mat__ni_mof | Electrode · Pristine Control · Composite | Sample dispersion drop-cast onto GC and dried at 50 C in vacuum oven for 3 h.Glassy carbon working electrode, 3 mm diameter, 7.065 x 10^-6 m2; active material loading ca. 0.14 mg cm-2. · Mass loading approximately 0.14 mg cm-2 | main p.4 and p.12 · 2.3 Electrochemical analysis · Fig. 5 |
| Ni-MOF powderresearch_0546__mat__ni_mof | Powder · Pristine Control · Pristine Framework | Solvothermal product washed with DMF and dried at 60 C for 3 h. | main p.3 · 2.1.2 Synthesis of Ni-MOF and Fe-MOF |
| Zn-doped Ni/Fe-MOF//AC ASC deviceresearch_0546__mat__zn_doped_ni_fe_mof_ac_asc | Electrode · Composite Sample · Composite | ASC assembled from a 90 wt% Zn-doped Ni/Fe-MOF positive electrode and a 90 wt% activated-carbon negative electrode, both with 10 wt% PVDF and dried at 100 C for 10 h.Two-electrode aqueous ASC with 1.00 cm2 positive and negative electrodes, Whatman cellulose separator and 2 M KOH electrolyte. · Positive: 1.57 mg, 1.57 mg cm-2; negative: 10.0 mg, 10.0 mg cm-2; potential window 0.0-1.8 V. | main p.15-16; SI rendered p.3 · 3.3 Asymmetric supercapacitor; Table S1 · Fig. 7; Table S1 |
| ASC positive electrode (Zn-doped Ni/Fe-MOF)research_0546__mat__zn_doped_ni_fe_mof_derived_carbon | Electrode · Target Sample · Composite | 90 wt% active material / 10 wt% PVDF; dried at 100 C in an oven for 10 h.Electrode area 1.00 cm2; current collector/substrate not specified. · Active material mass 1.57 mg; mass loading 1.57 mg cm-2. | SI rendered p.3 · Table S1 electrode preparation details · Table S1 |
| Pyrolysed Zn-doped Ni/Fe-MOF-derived carbon powderresearch_0546__mat__zn_doped_ni_fe_mof_derived_carbon | Powder · Target Sample · Derived Carbon | 500 mg MOF powder heated to 600 C under nitrogen at 5 C min-1 and held 3 h. | main p.3-4 and p.8-9 · 2.1.3 Synthesis; 3.1 Physical characterization · Fig. 3c |
| Zn-doped Ni/Fe-MOF-derived material on glassy carbon electroderesearch_0546__mat__zn_doped_ni_fe_mof_derived_carbon | Electrode · Target Sample · Composite | Sample dispersion drop-cast onto GC and dried at 50 C in vacuum oven for 3 h.Glassy carbon working electrode; active material loading ca. 0.14 mg cm-2. · Mass loading approximately 0.14 mg cm-2 | main p.4 and p.12 · 2.3 Electrochemical analysis · Fig. 5 |
| Zn-doped Ni/Fe-MOF powder before carbonisationresearch_0546__mat__zn_doped_ni_fe_mof | Powder · Target Sample · Doped | Solvothermal product rinsed with DMF and dried at 60 C for 3 h before optional/continued pyrolysis. | main p.3-4 · 2.1.3 Synthesis of Ni/Fe-MOF and Zn-doped Ni/Fe-MOF |