Electrochemistry Application — Conductive metal-organic frameworks with wheel-shaped metallomacrocycle subunits as high-performance supercapacitor electrodes

5 measurement groups · 21 results

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

two-electrode asymmetric supercapacitor CV, GCD, EIS and Ragone analysis

Impedance spectroscopy Voltammetry Galvanostatic cycling

NDC//MWM-1 (Co) asymmetric supercapacitor · Electrode

CR2035 button cell; NDC positive electrode, MWM-1(Co) negative electrode, cellulose cloth separator, 6 M KOH

Geometry: two-electrode ASC button cell
Context: pristine-control asymmetric device
Measurement source: 2, 7 · Section 2.3; Section 3.2 · Fig. 5h,i; Fig. S14

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
MWM-1(Co) ASC cycle stability after 20,000 cycles	approximately 100% after 20,000 cycles at 5 A g-1 from Fig. S14f	20000 cycles	visual estimate	Figure Axis Approximate	S8 · Figure S14 · Figure S14f
specific energy/power MWM-1(Co), high-power point	3.5 Wh kg-1, 9812.8 W kg-1	9812.8 W kg-1	—	Text Exact Reported	7 · Section 3.2 · Fig. 5h,i; Fig. S14
specific energy/power MWM-1(Co), low-power point	7.5 Wh kg-1, 499.4 W kg-1	499.4 W kg-1	—	Text Exact Reported	7 · Section 3.2 · Fig. 5h,i; Fig. S14
MWM-1(Co) ASC relaxation time constant	tau = 3.16 s from Fig. S14e inset	—	figure label	Figure Axis Rounded Reported	S8 · Figure S14 · Figure S14e

two-electrode asymmetric supercapacitor CV, GCD, EIS and Ragone analysis

Impedance spectroscopy Voltammetry Galvanostatic cycling

NDC//MWM-1 (Co/2Ni) asymmetric supercapacitor · Electrode

CR2035 button cell; NDC positive electrode, MWM-1(Co/2Ni) negative electrode, cellulose cloth separator, 6 M KOH

Geometry: two-electrode ASC button cell
Context: target asymmetric device
Measurement source: 2, 7-8 · Section 2.3; Section 3.2 · Fig. 5d,e,h,i; Table 1; Fig. S16

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
MWM-1(Co/2Ni) ASC gravimetric capacitance at low current	approximately 60 F g-1 at 1 A g-1 from Fig. S16c	1 A g-1	visual estimate	Figure Axis Approximate	S9 · Figure S16 · Figure S16c
MWM-1(Co/2Ni) ASC cycle stability after 5,000 cycles	approximately 78% after 5,000 cycles at 5 A g-1 from Fig. S16f	5000 cycles	visual estimate	Figure Axis Approximate	S9 · Figure S16 · Figure S16f
specific energy/power MWM-1(Co/2Ni), high-power point	7.9 Wh kg-1, 9470.5 W kg-1	9470.5 W kg-1	—	Text Exact Reported	7 · Section 3.2 · Fig. 5h,i
specific energy/power MWM-1(Co/2Ni), low-power pointMarked as a best value within this paper	21.9 Wh kg-1, 1037.1 W kg-1	1037.1 W kg-1	—	Text Exact Reported	7 · Section 3.2 · Fig. 5h,i
volumetric capacitance in ASCMarked as a best value within this paper	100.3 F cm-3 at 1 A g-1	1 A g-1	—	Table Exact Reported	8 · Table 1 · Table 1
maximum volumetric energy densityMarked as a best value within this paper	35.6 Wh L-1 at 1688.4 W L-1	1688.4 W L-1	—	Table Exact Reported	8 · Table 1 · Table 1
maximum volumetric power densityMarked as a best value within this paper	15.4 kW L-1 at 12.8 Wh L-1	12.8 Wh L-1	—	Table Exact Reported	8 · Table 1 · Table 1
MWM-1(Co/2Ni) ASC relaxation time constant	tau = 17.78 s from Fig. S16e inset	—	figure label	Figure Axis Rounded Reported	S9 · Figure S16 · Figure S16e

two-electrode asymmetric supercapacitor performance

NDC//MWM-1 (Co/5Ni) asymmetric supercapacitor · Electrode

Fig. 7 plots capacitance retention, Ragone plots and 20,000-cycle life for MWM-1(Co/5Ni) versus MWM-1(Co)

Atmosphere: 6 M KOH electrolyte
Geometry: two-electrode ASC
Context: Co/xNi higher-Ni doped target variant compared with Co control
Measurement source: 9 · Discussion · Fig. 7

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
MWM-1(Co/5Ni) specific capacitance in ASCMarked as a best value within this paper	~80 F g-1 at ~0.5 A g-1 from Fig. 7a	0.5 A g-1	visual estimate	Figure Axis Approximate	9 · Discussion · Fig. 7a
MWM-1(Co/5Ni) capacitance retention after 20,000 cycles	~90% after 20,000 cycles at 5 A g-1	20000 cycles	visual estimate	Figure Axis Approximate	9 · Discussion · Fig. 7c
MWM-1(Co/5Ni) maximum specific energy in ASCMarked as a best value within this paper	~29 Wh kg-1 from Fig. 7b	—	visual estimate	Figure Axis Approximate	9 · Discussion · Fig. 7b

three-electrode CV, GCD and EIS

Impedance spectroscopy Voltammetry Galvanostatic cycling

MWM-1 (Co) composite working electrode · Electrode

6 M KOH; Ni foam working electrode, Pt needle counter electrode, Hg/HgO reference; CV/GCD at varied scan rates and specific currents; EIS 0.01 Hz-100 kHz

Geometry: three-electrode cell
Context: pristine-control composite electrode
Measurement source: 2, 7 · Section 2.3; Section 3.2 · Fig. 5; Fig. S13

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
specific capacitance MWM-1(Co), three-electrode	52.3 F g-1 at 0.5 A g-1	—	—	Text Exact Reported	7 · Section 3.2 · Fig. 5; Fig. S13-S14
MWM-1(Co) cycle stabilityMarked as a best value within this paper	specific capacitance remained unchanged after 30,000 charge-discharge cycles	—	—	Text Qualitative	7 · Section 3.2 · Supplementary Fig. S13
electrode-material density MWM-1(Co)	1.623 g cm-3	—	—	Text Exact Reported	3 · Section 2.3 · Equations 1-2

three-electrode CV, GCD and EIS

Impedance spectroscopy Voltammetry Galvanostatic cycling

MWM-1 (Co/2Ni) composite working electrode · Electrode

6 M KOH; Ni foam working electrode; CV/GCD at varied scan rates and specific currents; EIS 0.01 Hz-100 kHz

Geometry: three-electrode cell
Context: target mixed-metal MOF composite electrode
Measurement source: 2, 7 · Section 2.3; Section 3.2 · Fig. 5b,c,f,g; Fig. S15

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
specific capacitance MWM-1(Co/2Ni), three-electrodeMarked as a best value within this paper	403.8 F g-1 at 0.5 A g-1	—	—	Text Exact Reported	7 · Section 3.2 · Fig. 5; Fig. S15-S16
calculated volumetric capacitance MWM-1(Co/2Ni), three-electrodeMarked as a best value within this paper	403.8 F g-1 x 1.629 g cm-3 = 657.8 F cm-3	—	calculated from reported values	Calculated From Reported Rounded Reported	3, 7 · Sections 2.3 and 3.2 · Fig. 5f
electrode-material density MWM-1(Co/2Ni)	1.629 g cm-3	—	—	Text Exact Reported	3, 7 · Section 2.3; Section 3.2 · Equations 1-2