Electrochemistry Application — Isonicotinic acid-based copper-MOF: An exotic redox propertied electrode material for high energy asymmetric supercapacitor

6 measurement groups · 33 results

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

Three-electrode CV voltage-window screening for device electrodes

Voltammetry

Cu-MOF//activated carbon asymmetric hybrid supercapacitor · Electrode

Activated carbon functionalized over 0 to -1 V; Cu-MOF over 0 to 0.7 V; Fig. S3 used to choose device voltage window.

Temperature: room temperature
Atmosphere: 1 M KOH electrolyte
Geometry: pre-device electrode voltage window assessment
Context: Cu-MOF positive electrode and activated-carbon negative electrode
Measurement source: 6 · Two electrode configuration · Fig. S3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Activated-carbon negative-electrode voltage window	0 to -1 V	—	—	Text Range	6 · Two electrode configuration · Fig. S3
Cu-MOF positive-electrode voltage window	0 to 0.7 V	—	—	Text Range	6 · Two electrode configuration · Fig. S3

Cyclic voltammetry in three-electrode configuration

Voltammetry

Cu-MOF/Ni foam working electrode · Electrode

Hg/HgO reference, Pt counter electrode, 1 M KOH, room temperature; CV over 0-0.7 V at multiple sweep rates.

Temperature: room temperature
Atmosphere: 1 M KOH electrolyte
Geometry: three-electrode cell; Cu-MOF/Ni foam working electrode
Context: composite electrode containing 80 wt% Cu-MOF
Measurement source: 4-5 · Three cell configurations · Fig. 3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Electrode b-value from peak-current scan-rate fitting	b = 0.507	—	—	Text Exact Reported	4 · Three cell configurations · Fig. 3b
Capacitive contribution at 50 mV/s	25.05 % capacitive insertion	—	—	Text Exact Reported	5 · Three cell configurations · Fig. 3d
Faradaic contribution at 3 mV/sMarked as a best value within this paper	93.7 % Faradic contributions at 3 mV/s	—	—	Text Exact Reported	8 · Conclusion
Non-Faradaic contribution at 3 mV/s	6.30 % non-Faradic contributions	—	—	Text Exact Reported	5 · Three cell configurations · Fig. 3c
Oxidation peak activity voltage	0.52 V	—	—	Text Exact Reported	5 · Three cell configurations · Fig. 3e
Oxidation-active voltage range	0.45-0.62 V	—	—	Text Range	5 · Three cell configurations · Fig. 3e
Reduction maximum interaction voltage	0.36 V	—	—	Text Exact Reported	5 · Three cell configurations · Fig. 3e inset
Reduction-active voltage range	0.49-0.29 V	—	—	Text Range	5 · Three cell configurations · Fig. 3e inset
CV-derived specific capacity at 3 mV/sMarked as a best value within this paper	511.66 C/g at 3 mV/s	—	—	Text Exact Reported	5 · Three cell configurations · Fig. 3f
Three-electrode CV voltage window	0-0.7 V	—	—	Text Range	4 · Three cell configurations · Fig. 3a

Galvanostatic charge-discharge (GCD) in three-electrode configuration

Galvanostatic cycling

Cu-MOF/Ni foam working electrode · Electrode

Potential window 0-0.6 V; current densities 0.6-10 A/g in 1 M KOH at room temperature.

Temperature: room temperature
Atmosphere: 1 M KOH electrolyte
Geometry: three-electrode cell; Cu-MOF/Ni foam working electrode
Context: composite electrode containing 80 wt% Cu-MOF
Measurement source: 5 · Three cell configurations · Fig. 4

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Specific capacitance at 10 A/g	351.88 F/g at 10 A/g	—	—	Text Exact Reported	5 · Three cell configurations · Fig. 4b
Specific capacity at 10 A/g	211.13 C/g at 10 A/g	—	—	Text Exact Reported	5 · Three cell configurations · Fig. 4b
Three-electrode GCD current-density range	0.6-10 A/g	—	—	Text Range	5 · Three cell configurations · Fig. 4a
Maximum GCD specific capacitanceMarked as a best value within this paper	781.87 F/g at 0.6 A/g	—	—	Text Exact Reported	5 · Three cell configurations · Fig. 4b
Maximum GCD specific capacityMarked as a best value within this paper	469.12 C/g at 0.6 A/g	—	—	Text Exact Reported	5 · Three cell configurations · Fig. 4b
SI visual specific capacitance near 0.6 A/g	approximately 780 F/g near 0.6 A/g	—	visual read from plotted axis	Figure Axis Approximate	2 · Supplementary information · Figure S2
SI visual specific capacitance at 10 A/g	approximately 350 F/g at 10 A/g	—	visual read from plotted axis	Figure Axis Approximate	2 · Supplementary information · Figure S2

Coulombic efficiency during 5000-cycle device stability test

Cu-MOF//activated carbon asymmetric hybrid supercapacitor · Electrode

SI Figure S4 plots coulombic efficiency versus number of cycles for the Cu-MOF//activated-carbon device during 5000 cycles.

Temperature: room temperature
Atmosphere: 1 M KOH electrolyte
Geometry: two-electrode asymmetric Cu-MOF//activated carbon device
Context: composite asymmetric device
Measurement source: 4 · Supplementary information · Figure S4

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Device coulombic efficiency after 5000 cyclesMarked as a best value within this paper	97.6 % after 5000 cycles	—	—	Figure Axis Approximate	4 · Supplementary information · Figure S4

Cyclic voltammetry of asymmetric hybrid supercapacitor device

Voltammetry

Cu-MOF//activated carbon asymmetric hybrid supercapacitor · Electrode

Voltage-window optimisation at 30 mV/s over 0-0.9, 1.1, 1.3, 1.5 and 1.7 V; device CV at 3-100 mV/s over 0-1.7 V.

Temperature: room temperature
Atmosphere: 1 M KOH electrolyte
Geometry: two-electrode asymmetric Cu-MOF//activated carbon device
Context: composite asymmetric device
Measurement source: 6-8 · Two electrode configuration · Figs. 6, 8b, 9

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Device b-value range	0.61-0.65	—	—	Text Range	7 · Two electrode configuration · Fig. 8b
Device capacitive contribution at 100 mV/sMarked as a best value within this paper	53.11 %	—	—	Text Exact Reported	8 · Two electrode configuration · Fig. 9d
Device CV scan-rate range	3 to 100 mV/s	—	—	Text Range	6 · Two electrode configuration · Fig. 6c
Device diffusion-controlled contribution at 3 mV/sMarked as a best value within this paper	89.69 %	—	—	Text Exact Reported	7-8 · Two electrode configuration; Conclusion · Fig. 9d
Reliable device operating voltage windowMarked as a best value within this paper	0 to 1.7 V	—	—	Text Range	6 · Two electrode configuration · Fig. 6b

GCD rate capability and cycling stability of asymmetric hybrid supercapacitor device

Galvanostatic cycling

Cu-MOF//activated carbon asymmetric hybrid supercapacitor · Electrode

Device GCD at 1.3-10 A/g; 5000 GCD cycles at 8 A/g; 0-1.7 V operating window.

Temperature: room temperature
Atmosphere: 1 M KOH electrolyte
Geometry: two-electrode asymmetric Cu-MOF//activated carbon device
Context: composite asymmetric device
Measurement source: 6-8 · Two electrode configuration; Conclusion · Fig. 7

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Device specific capacity at 10 A/g	140.10 C/g at 10 A/g	—	—	Text Exact Reported	6 · Two electrode configuration · Fig. 7b
Device specific capacity at 1.3 A/gMarked as a best value within this paper	205.40 C/g at 1.3 A/g	—	—	Text Exact Reported	6 · Two electrode configuration · Fig. 7b
Device capacitance retention after cyclingMarked as a best value within this paper	93.47 % retention after 5000 GCD cycles at 8 A/g	—	—	Text Exact Reported	6 · Two electrode configuration · Fig. 7d
Device specific energy at 10 A/g	33.32 Wh/kg at 10 A/g	—	—	Text Exact Reported	6 · Two electrode configuration · Fig. 7c
Device specific energy at 1.3 A/gMarked as a best value within this paper	48.50 Wh/kg at 1.3 A/g	—	—	Text Exact Reported	6 · Two electrode configuration · Fig. 7c
Device energy/capacity preservation at high current	68.70 % preservation	—	—	Text Exact Reported	6 · Two electrode configuration · Fig. 7c
Device specific power at 10 A/gMarked as a best value within this paper	8667 W/kg at 10 A/g	—	—	Text Exact Reported	6 · Two electrode configuration · Fig. 7c
Device specific power at 1.3 A/g	1105 W/kg at 1.3 A/g	—	—	Text Exact Reported	6 · Two electrode configuration · Fig. 7c