cMOF Evidence Base
Electrochemistry Application — Nanostructured zinc-doped nickel/iron metal–organic framework electrode material for an efficient energy storage

Measurement evidence

Electrochemistry Application

Nanostructured zinc-doped nickel/iron metal–organic framework electrode material for an efficient energy storage · Khan Z.U., Jiang J., Zeb S. · Journal of Materials Science: Materials in Electronics · 2026 · 152

12 measurement groups · 84 results

Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.

ASC CV and GCD

VoltammetryGalvanostatic cycling

Zn-doped Ni/Fe-MOF//AC ASC device · Electrode

Two-electrode ASC in 2 M KOH; CV 1-100 mV s-1; GCD 1-10 A g-1; 0.0-1.8 V operating window

Temperature
room temperature
Geometry
two-electrode ASC
Context
device application
Measurement source
main p.15-16 · 3.3 Asymmetric supercapacitor (ASC) · Fig. 7
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
AC negative electrode stable potential range0.0-0.6 V——Text
Exact Reported		main p.15 · 3.3 Asymmetric supercapacitor (ASC) · Fig. 7a
ASC specific capacitance at 10 A g-171.03 F g-1 at 10 A g-1——Text
Exact Reported		main p.1 and p.16 · Abstract; Conclusion · Fig. 7d
ASC specific capacitance at 1 A g-1Marked as a best value within this paper102.31 F g-1 at 1 A g-1——Text
Exact Reported		main p.15-16 · 3.3 ASC; Conclusion · Fig. 7d
ASC GCD capacitance sequence102.31, 97.27, 95.09, 92.11, 90.22, 87.17, 84.64, 80.71, 77.11, and 71.03 F g-1; current-density list in text is internally inconsistent——Text
Exact Reported		main p.15 · 3.3 Asymmetric supercapacitor (ASC) · Fig. 7c-d
ASC energy densityMarked as a best value within this paper23.45 Wh kg-1——Text
Exact Reported		main p.15-17 · 3.3 ASC; Table 3 · Fig. 7g; Table 3
Optimised positive/negative mass ratio0.15——Text
Exact Reported		main p.5 · 2.3 Electrochemical analysis
Zn-doped positive electrode operational potential window0.6-1.8 V——Text
Exact Reported		main p.15 · 3.3 Asymmetric supercapacitor (ASC) · Fig. 7a
ASC power densityMarked as a best value within this paper803.77 W kg-1——Text
Exact Reported		main p.15-17 · 3.3 ASC; Table 3 · Fig. 7g; Table 3
ASC separator materialWhatman cellulose——SI Table
Qualitative		SI rendered p.3 · Table S1 electrode preparation details · Table S1
ASC operating voltage window1.8 V——Text
Exact Reported		main p.15 · 3.3 Asymmetric supercapacitor (ASC) · Fig. 7a

ASC long-term GCD cycling

Galvanostatic cycling

Zn-doped Ni/Fe-MOF//AC ASC device · Electrode

5000 consecutive GCD cycles at 10 A g-1 in 2 M KOH

Temperature
room temperature
Geometry
two-electrode ASC
Context
device cycling stability
Measurement source
main p.15-16 · 3.3 Asymmetric supercapacitor (ASC) · Fig. 7e-f
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
ASC coulombic efficiency after 5000 cycles96.72%——Text
Exact Reported		main p.15 · 3.3 Asymmetric supercapacitor (ASC) · Fig. 7e
ASC capacitance retention after 5000 cyclesMarked as a best value within this paper89.42%——Text
Exact Reported		main p.15-17 · 3.3 ASC; Table 3 · Fig. 7e; Table 3
ASC abstract coulombic efficiency~99%——Text
Approximate		main p.1 · Abstract

CV, GCD and EIS

Impedance spectroscopyVoltammetryGalvanostatic cycling

Fe-MOF on glassy carbon electrode · Electrode

Three-electrode 2 M KOH; CV 0.0-0.7 V at 1-50 mV s-1 (figure caption 5-100 mV s-1); GCD 0.0-0.6 V at 1-10 A g-1; EIS 0.1 to 10^5 Hz

Temperature
ambient/room temperature
Geometry
three-electrode GC/Pt/Ag-AgCl
Context
Fe-MOF control electrode
Measurement source
main p.4 and p.12-13 · 2.3 Electrochemical analysis; 3.2 Electrochemical investigation · Figs. 5-6; Table 2
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Fe-MOF EIS fit chi20.00021——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Fe-MOF CPE exponent0.85——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Fe-MOF CV specific capacitance at 1 mV s-1621.35 F g-1——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Fe-MOF CV potential window0.0-0.7 V——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Fe-MOF GCD specific capacitance at 1 A g-1349.13 F g-1——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Fe-MOF charge-transfer resistance Rct0.54 ohm——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Fe-MOF solution resistance Rs1.02 ohm——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Fe-MOF Warburg coefficient5.33 ohm s-1/2——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2

CV, GCD and EIS

Impedance spectroscopyVoltammetryGalvanostatic cycling

Ni/Fe-MOF on glassy carbon electrode · Electrode

Three-electrode 2 M KOH; CV 0.0-0.7 V at 1-50 mV s-1 (figure caption 5-100 mV s-1); GCD 0.0-0.6 V at 1-10 A g-1; EIS 0.1 to 10^5 Hz

Temperature
ambient/room temperature
Geometry
three-electrode GC/Pt/Ag-AgCl
Context
Ni/Fe-MOF control electrode
Measurement source
main p.4 and p.12-13 · 2.3 Electrochemical analysis; 3.2 Electrochemical investigation · Figs. 5-6; Table 2
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Ni/Fe-MOF EIS fit chi20.00013——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Ni/Fe-MOF CPE exponent0.89——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Ni/Fe-MOF CV specific capacitance at 1 mV s-1703.19 F g-1——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Ni/Fe-MOF CV potential window0.0-0.7 V——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Ni/Fe-MOF GCD specific capacitance at 1 A g-1598.35 F g-1——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Ni/Fe-MOF charge-transfer resistance Rct0.17 ohm——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Ni/Fe-MOF solution resistance Rs0.43 ohm——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Ni/Fe-MOF Warburg coefficient3.56 ohm s-1/2——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2

CV, GCD and EIS

Impedance spectroscopyVoltammetryGalvanostatic cycling

Ni-MOF on glassy carbon electrode · Electrode

Three-electrode 2 M KOH; CV 0.0-0.7 V at 1-50 mV s-1 (figure caption 5-100 mV s-1); GCD 0.0-0.6 V at 1-10 A g-1; EIS 0.1 to 10^5 Hz

Temperature
ambient/room temperature
Geometry
three-electrode GC/Pt/Ag-AgCl
Context
Ni-MOF control electrode
Measurement source
main p.4 and p.12-13 · 2.3 Electrochemical analysis; 3.2 Electrochemical investigation · Figs. 5-6; Table 2
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Ni-MOF EIS fit chi20.00016——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Ni-MOF CPE exponent0.87——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Ni-MOF CV specific capacitance at 1 mV s-1639.71 F g-1——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Ni-MOF CV potential window0.0-0.8 V——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Ni-MOF GCD specific capacitance at 1 A g-1289.21 F g-1——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Ni-MOF charge-transfer resistance Rct0.43 ohm——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Ni-MOF solution resistance Rs0.51 ohm——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Ni-MOF Warburg coefficient4.12 ohm s-1/2——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2

CV, GCD and EIS

Impedance spectroscopyVoltammetryGalvanostatic cycling

Zn-doped Ni/Fe-MOF-derived material on glassy carbon electrode · Electrode

Three-electrode 2 M KOH; CV 0.0-0.7 V at 1-50 mV s-1 (figure caption 5-100 mV s-1); GCD 0.0-0.6 V at 1-10 A g-1; EIS 0.1 to 10^5 Hz

Temperature
ambient/room temperature
Geometry
three-electrode GC/Pt/Ag-AgCl
Context
Zn-doped target electrode
Measurement source
main p.4 and p.12-13 · 2.3 Electrochemical analysis; 3.2 Electrochemical investigation · Figs. 5-6; Table 2
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Zn-doped Ni/Fe-MOF EIS fit chi29.8e-05——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Zn-doped Ni/Fe-MOF CPE exponentMarked as a best value within this paper0.92——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Anodic redox peakapproximately 0.48 V vs Ag/AgCl——Text
Approximate		main p.11 · 3.2 Electrochemical investigation · Fig. 5d
Zn-doped Ni/Fe-MOF CV specific capacitance at 1 mV s-1Marked as a best value within this paper929.23 F g-1——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Cathodic redox peakca. 0.36 V vs Ag/AgCl——Text
Approximate		main p.11 · 3.2 Electrochemical investigation · Fig. 5d
Zn-doped Ni/Fe-MOF CV potential window0.0-0.7 V——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Zn-doped Ni/Fe-MOF GCD specific capacitance at 1 A g-1Marked as a best value within this paper1246.71 F g-1——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Zn-doped Ni/Fe-MOF charge-transfer resistance RctMarked as a best value within this paper0.13 ohm——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Zn-doped Ni/Fe-MOF solution resistance RsMarked as a best value within this paper0.29 ohm——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2
Zn-doped Ni/Fe-MOF Warburg coefficientMarked as a best value within this paper2.71 ohm s-1/2——Table
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Table 2

Three-electrode preparation

Zn-doped Ni/Fe-MOF-derived material on glassy carbon electrode · Electrode

GC electrode 3 mm, area 0.07065 cm2; 0.50 +/- 0.02 mg active material; loading 0.14 mg cm-2; 90 wt% active / 10 wt% PVDF; dried at 50 C for 3 h.

Geometry
GC electrode
Context
three-electrode testing
Measurement source
SI rendered p.3 · Table S1 electrode preparation details · Table S1
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Glassy carbon area7.065 x 10^-6 m2——Text
Exact Reported		main p.4 · 2.3 Electrochemical analysis
Active material mass loadingapproximately 0.14 mg cm-2——Text
Approximate		main p.4 · 2.3 Electrochemical analysis · Fig. 5 caption
Three-electrode active fraction90 wt% active——SI Table
Exact Reported		SI rendered p.3 · Table S1 electrode preparation details · Table S1
Three-electrode active material mass0.50 +/- 0.02 mg—+/- 0.02 mgSI Table
Exact Reported		SI rendered p.3 · Table S1 electrode preparation details · Table S1
Three-electrode GC area0.07065 cm2 (3 mm GC)——SI Table
Exact Reported		SI rendered p.3 · Table S1 electrode preparation details · Table S1
Three-electrode drying temperature50 C——SI Table
Exact Reported		SI rendered p.3 · Table S1 electrode preparation details · Table S1
Three-electrode drying time3 h——SI Table
Exact Reported		SI rendered p.3 · Table S1 electrode preparation details · Table S1
Three-electrode active-material loading0.14 mg cm-2——SI Table
Exact Reported		SI rendered p.3 · Table S1 electrode preparation details · Table S1
Three-electrode PVDF binder fraction10 wt% PVDF——SI Table
Exact Reported		SI rendered p.3 · Table S1 electrode preparation details · Table S1

CV cycling comparison

Voltammetry

Ni/Fe-MOF on glassy carbon electrode · Electrode

5000 CV cycles at 50 mV s-1 in 2 M KOH

Context
cycling comparison
Measurement source
main p.13-15 · 3.2 Electrochemical investigation · Fig. 6a-c
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Ni/Fe-MOF capacitance decrease after 5000 CV cycles34% decrease——Text
Exact Reported		main p.13 · 3.2 Electrochemical investigation · Fig. 6c
Zn-doped Ni/Fe-MOF CV cycling comparisonretained most of its initial capacitance; significantly lower capacitance loss than Ni/Fe-MOF——Text
Qualitative		main p.13 · 3.2 Electrochemical investigation · Fig. 6c

Electrode preparation table

Activated carbon negative electrode · Electrode

SI Table S1 reports active mass, loading, electrode area, composition, binder and drying for the ASC activated-carbon negative electrode.

Geometry
ASC negative electrode, 1.00 cm2
Context
ASC negative electrode component
Measurement source
SI rendered p.3 · Table S1 electrode preparation details · Table S1
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
ASC negative activated-carbon fraction90 wt% AC——SI Table
Exact Reported		SI rendered p.3 · Table S1 electrode preparation details · Table S1
ASC negative activated-carbon mass10.0 mg——SI Table
Exact Reported		SI rendered p.3 · Table S1 electrode preparation details · Table S1
ASC negative electrode area1.00 cm2——SI Table
Exact Reported		SI rendered p.3 · Table S1 electrode preparation details · Table S1
ASC negative drying temperature100 C——SI Table
Exact Reported		SI rendered p.3 · Table S1 electrode preparation details · Table S1
ASC negative drying time10 h——SI Table
Exact Reported		SI rendered p.3 · Table S1 electrode preparation details · Table S1
ASC negative active-material loading10.0 mg cm-2——SI Table
Exact Reported		SI rendered p.3 · Table S1 electrode preparation details · Table S1
ASC negative PVDF binder fraction10 wt% PVDF——SI Table
Exact Reported		SI rendered p.3 · Table S1 electrode preparation details · Table S1

Electrode preparation table

ASC positive electrode (Zn-doped Ni/Fe-MOF) · Electrode

SI Table S1 reports active mass, loading, electrode area, composition, binder and drying for the ASC positive electrode.

Geometry
ASC positive electrode, 1.00 cm2
Context
ASC target positive electrode
Measurement source
SI rendered p.3 · Table S1 electrode preparation details · Table S1
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
ASC positive active fraction90 wt% active——SI Table
Exact Reported		SI rendered p.3 · Table S1 electrode preparation details · Table S1
ASC positive active material mass1.57 mg——SI Table
Exact Reported		SI rendered p.3 · Table S1 electrode preparation details · Table S1
ASC positive electrode area1.00 cm2——SI Table
Exact Reported		SI rendered p.3 · Table S1 electrode preparation details · Table S1
ASC positive drying temperature100 C——SI Table
Exact Reported		SI rendered p.3 · Table S1 electrode preparation details · Table S1
ASC positive drying time10 h——SI Table
Exact Reported		SI rendered p.3 · Table S1 electrode preparation details · Table S1
ASC positive active-material loading1.57 mg cm-2——SI Table
Exact Reported		SI rendered p.3 · Table S1 electrode preparation details · Table S1
ASC positive PVDF binder fraction10 wt% PVDF——SI Table
Exact Reported		SI rendered p.3 · Table S1 electrode preparation details · Table S1

Long-term GCD cycling

Galvanostatic cycling

Zn-doped Ni/Fe-MOF-derived material on glassy carbon electrode · Electrode

2000 consecutive GCD cycles at 10 A g-1 in 2 M KOH

Geometry
three-electrode
Context
target durability
Measurement source
main p.15 · 3.2 Electrochemical investigation · Fig. 6h
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Coulombic efficiency after 2000 GCD cycles97.5%——Text
Exact Reported		main p.15 · 3.2 Electrochemical investigation · Fig. 6h
Capacitance retention after 2000 GCD cyclesMarked as a best value within this paper92.37%——Text
Exact Reported		main p.15 · 3.2 Electrochemical investigation · Fig. 6h

GCD rate capability

Galvanostatic cycling

Zn-doped Ni/Fe-MOF-derived material on glassy carbon electrode · Electrode

2 M KOH; 0.0-0.6 V vs Ag/AgCl; current densities 1-10 A g-1

Temperature
ambient
Geometry
three-electrode
Context
target rate capability
Measurement source
main p.14 · 3.2 Electrochemical investigation · Fig. 6f-g
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Zn-doped Ni/Fe-MOF capacitance at 10 A g-1800.19 F g-1 at 10 A g-1——Text
Exact Reported		main p.14 · 3.2 Electrochemical investigation · Fig. 6f-g
Zn-doped Ni/Fe-MOF capacitance at 1 A g-1Marked as a best value within this paper1249.99 F g-1 at 1 A g-1——Text
Exact Reported		main p.14 · 3.2 Electrochemical investigation · Fig. 6f-g
Zn-doped Ni/Fe-MOF capacitance at 2 A g-11140.25 F g-1 at 2 A g-1——Text
Exact Reported		main p.14 · 3.2 Electrochemical investigation · Fig. 6f-g
Zn-doped Ni/Fe-MOF capacitance at 3 A g-11080.12 F g-1 at 3 A g-1——Text
Exact Reported		main p.14 · 3.2 Electrochemical investigation · Fig. 6f-g
Zn-doped Ni/Fe-MOF capacitance at 4 A g-11000.76 F g-1 at 4 A g-1——Text
Exact Reported		main p.14 · 3.2 Electrochemical investigation · Fig. 6f-g
Zn-doped Ni/Fe-MOF capacitance at 5 A g-1950.61 F g-1 at 5 A g-1——Text
Exact Reported		main p.14 · 3.2 Electrochemical investigation · Fig. 6f-g
Zn-doped Ni/Fe-MOF capacitance at 6 A g-1900.37 F g-1 at 6 A g-1——Text
Exact Reported		main p.14 · 3.2 Electrochemical investigation · Fig. 6f-g
Zn-doped Ni/Fe-MOF capacitance at 7 A g-1889.79 F g-1 at 7 A g-1——Text
Exact Reported		main p.14 · 3.2 Electrochemical investigation · Fig. 6f-g
Zn-doped Ni/Fe-MOF capacitance at 8 A g-1880.91 F g-1 at 8 A g-1——Text
Exact Reported		main p.14 · 3.2 Electrochemical investigation · Fig. 6f-g
Zn-doped Ni/Fe-MOF capacitance at 9 A g-1810.28 F g-1 at 9 A g-1——Text
Exact Reported		main p.14 · 3.2 Electrochemical investigation · Fig. 6f-g