Electrochemistry Application — Pillared nickel-based metal-organic frameworks as electrode material with high electrochemical performance

10 measurement groups · 37 results

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

Activated carbon negative-electrode CV, GCD, capacitance and Nyquist tests

Voltammetry Galvanostatic cycling

Activated carbon composite negative electrode · Electrode

Three-electrode system in 3 M KOH; CV at 10-150 mV s-1; GCD at 1-20 A g-1; Nyquist plot in SI Fig. S9.

Temperature: room temperature
Geometry: negative electrode
Context: Non-MOF negative electrode component for ASC charge balance.
Measurement source: SI p.5 · Supplementary Materials · Fig. S9

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Activated carbon negative-electrode specific capacitance at 1 A g-1	approximately 293 F g-1 at 1 A g-1 from Fig. S9c	—	visual estimate from plotted point	Visual Estimate Approximate	SI p.5 · Supplementary Materials · Fig. S9c

Asymmetric supercapacitor CV and GCD

Voltammetry Galvanostatic cycling

(Zn/Ni)2(bdc)2P//AC asymmetric supercapacitor · Electrode

(Zn/Ni)2(bdc)2P positive electrode and AC negative electrode; CV at 30-200 mV s-1; GCD at 0.5-10 A g-1; working window 0-1.5 V.

Temperature: room temperature
Geometry: ASC device
Context: Application device using target mixed-metal MOF electrode.
Measurement source: 8 · 3.2 Electrochemical measurements · Fig. 7b-d

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
ASC specific capacitance at 0.5 A g-1Marked as a best value within this paper	39.8 F g-1	—	—	Text Exact Reported	8 · 3.2 Electrochemical measurements · Fig. 7d
ASC specific capacitance at 1 A g-1	35.5 F g-1	—	—	Text Exact Reported	8 · 3.2 Electrochemical measurements · Fig. 7d
ASC specific capacitance at 10 A g-1	14.7 F g-1	—	—	Text Exact Reported	8 · 3.2 Electrochemical measurements · Fig. 7d
ASC specific capacitance at 2 A g-1	30.7 F g-1	—	—	Text Exact Reported	8 · 3.2 Electrochemical measurements · Fig. 7d
ASC specific capacitance at 3 A g-1	27.3 F g-1	—	—	Text Exact Reported	8 · 3.2 Electrochemical measurements · Fig. 7d
ASC specific capacitance at 5 A g-1	22.2 F g-1	—	—	Text Exact Reported	8 · 3.2 Electrochemical measurements · Fig. 7d
ASC specific capacitance at 8 A g-1	17.2 F g-1	—	—	Text Exact Reported	8 · 3.2 Electrochemical measurements · Fig. 7d
ASC working potential window	1.5 V	—	—	Text Exact Reported	8 · 3.2 Electrochemical measurements · Fig. 7a,b

ASC Ragone analysis and cycle-life testing

(Zn/Ni)2(bdc)2P//AC asymmetric supercapacitor · Electrode

Energy and power density calculated from GCD curves; cycling at 5 A g-1 for 3000 cycles.

Temperature: room temperature
Geometry: ASC device
Context: Application device using target mixed-metal MOF electrode.
Measurement source: 8-9 · 3.2 Electrochemical measurements · Fig. 7e,f

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
ASC energy density at 371.5 W kg-1Marked as a best value within this paper	12.2 W h kg-1 at 371.5 W kg-1	—	—	Text Exact Reported	8 · 3.2 Electrochemical measurements · Fig. 7e
ASC energy density at maximum power	3.1 W h kg-1 at 6141.6 W kg-1	—	—	Text Exact Reported	8 · 3.2 Electrochemical measurements · Fig. 7e
ASC maximum power densityMarked as a best value within this paper	6141.6 W kg-1	—	—	Text Exact Reported	8 · 3.2 Electrochemical measurements · Fig. 7e
ASC power density at 12.2 W h kg-1	371.5 W kg-1	—	—	Text Exact Reported	8 · 3.2 Electrochemical measurements · Fig. 7e
ASC capacitance retention after 1000 cycles	66% after 1000 cycles	—	—	Text Exact Reported	9 · 3.2 Electrochemical measurements · Fig. 7f
ASC capacitance retention after 3000 cycles	60.8% after 3000 cycles	—	read from Fig. 7f label	Figure Axis Approximate	8-9 · 3.2 Electrochemical measurements · Fig. 7f

ASC supplementary potential-window CV and Nyquist testing

Voltammetry

(Zn/Ni)2(bdc)2P//AC asymmetric supercapacitor · Electrode

Supplementary Fig. S10: CV windows 0-1.0, 0-1.2, 0-1.4 and 0-1.5 V plus ASC Nyquist plot.

Temperature: room temperature
Geometry: ASC device
Context: Application device using target mixed-metal MOF electrode.
Measurement source: SI p.5 · Supplementary Materials · Fig. S10

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
ASC supplementary CV potential-window series	0-1.0, 0-1.2, 0-1.4 and 0-1.5 V	—	discrete set	Figure Axis Exact Reported	SI p.5 · Supplementary Materials · Fig. S10a

Cyclic voltammetry in three-electrode cell

Voltammetry

(Zn/Ni)2(bdc)2P composite working electrode · Electrode

CHI 660E workstation; 3 M KOH aqueous electrolyte; Hg/HgO reference and Pt counter electrode; room temperature.

Temperature: room temperature
Geometry: MOF/carbon black/PTFE on nickel foam working electrode
Context: Composite working electrodes prepared from pristine MOF powders.
Measurement source: 2-3,7 · 2.3 Electrochemical measurements; 3.2 Electrochemical measurements · Fig. 6a,b

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Ni2(bdc)2P b value peak 1	0.67	—	—	Text Exact Reported	7 · 3.2 Electrochemical measurements · Fig. S6b referenced
Ni2(bdc)2P b value peak 2	0.54	—	—	Text Exact Reported	7 · 3.2 Electrochemical measurements · Fig. S6b referenced
(Zn/Ni)2(bdc)2P b value peak 1	0.62	—	—	Text Exact Reported	7 · 3.2 Electrochemical measurements · Fig. 6c
(Zn/Ni)2(bdc)2P b value peak 2	0.55	—	—	Text Exact Reported	7 · 3.2 Electrochemical measurements · Fig. 6c
Zn2(bdc)2P specific capacity at 0.5 A g-1	approximately 7 C g-1 at 0.5 A g-1 from Fig. 6e	—	visual estimate from plotted point	Figure Axis Approximate	7 · 3.2 Electrochemical measurements · Fig. 6e
Ni2(bdc)2P CV oxidation peak potential	about 0.42 V	—	about	Text Approximate	6 · 3.2 Electrochemical measurements · Fig. S6a referenced
Ni2(bdc)2P CV reduction peak potential	about 0.28 V	—	about	Text Approximate	6 · 3.2 Electrochemical measurements · Fig. S6a referenced
CV area ordering at 10 mV s-1Marked as a best value within this paper	(Zn/Ni)2(bdc)2P > Ni2(bdc)2P > Zn2(bdc)2P	—	—	Text Qualitative	7 · 3.2 Electrochemical measurements · Fig. 6a

Repeated galvanostatic charge-discharge cycling

Galvanostatic cycling

(Zn/Ni)2(bdc)2P composite working electrode · Electrode

1000 cycles at 5 A g-1 in 3 M KOH three-electrode configuration.

Temperature: room temperature
Geometry: MOF/carbon black/PTFE on nickel foam
Context: Ni2(bdc)2P and (Zn/Ni)2(bdc)2P composite electrodes.
Measurement source: 8 · 3.2 Electrochemical measurements · Fig. 6f

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Ni2(bdc)2P capacitance retention after 1000 cycles	7.2% after 1000 cycles at 5 A g-1	—	—	Text Exact Reported	8 · 3.2 Electrochemical measurements · Fig. 6f
(Zn/Ni)2(bdc)2P capacitance retention after 1000 cyclesMarked as a best value within this paper	25.9% after 1000 cycles at 5 A g-1	—	—	Text Exact Reported	8 · 3.2 Electrochemical measurements · Fig. 6f

Electrochemical impedance spectroscopy

Impedance spectroscopy

(Zn/Ni)2(bdc)2P composite working electrode · Electrode

0.01 Hz to 100 kHz, 5 mV AC amplitude at open-circuit potential in 3 M KOH.

Temperature: room temperature
Geometry: MOF/carbon black/PTFE working electrode
Context: Ni2(bdc)2P and (Zn/Ni)2(bdc)2P composite electrodes.
Measurement source: 2-3,8 · 2.3 Electrochemical measurements; 3.2 Electrochemical measurements · Fig. S8

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Electrode EIS equivalent circuit elements	Rs - (Rct parallel Cd) - W equivalent circuit shown in inset	—	—	Figure Axis Qualitative	SI p.4 · Supplementary Materials · Fig. S8
Ni2(bdc)2P charge transfer resistanceMarked as a best value within this paper	0.02 ohm	—	—	Text Exact Reported	8 · 3.2 Electrochemical measurements · Fig. S8 referenced
(Zn/Ni)2(bdc)2P charge transfer resistance	0.08 ohm	—	—	Text Exact Reported	8 · 3.2 Electrochemical measurements · Fig. S8 referenced
Ni2(bdc)2P equivalent series resistance	0.73 ohm	—	—	Text Exact Reported	8 · 3.2 Electrochemical measurements · Fig. S8 referenced
(Zn/Ni)2(bdc)2P equivalent series resistanceMarked as a best value within this paper	0.7 ohm	—	—	Text Exact Reported	8 · 3.2 Electrochemical measurements · Fig. S8 referenced

Galvanostatic charge-discharge

Galvanostatic cycling

Ni2(bdc)2P composite working electrode · Electrode

Three-electrode cell in 3 M KOH; current densities from 0.5 to 10 A g-1; potential window not fully specified for Ni-only in main text.

Temperature: room temperature
Geometry: Ni2(bdc)2P/carbon black/PTFE on nickel foam
Context: Pristine framework formulated as composite electrode.
Measurement source: 7 · 3.2 Electrochemical measurements · Fig. S6(c); Fig. 6e

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Ni2(bdc)2P specific capacity at 0.5 A g-1	177.6 C g-1 at 0.5 A g-1	—	—	Text Exact Reported	7 · 3.2 Electrochemical measurements · Fig. 6e; Fig. S6c referenced
Ni2(bdc)2P specific capacity at 10 A g-1	48 C g-1 at 10 A g-1	—	—	Text Exact Reported	7 · 3.2 Electrochemical measurements · Fig. 6e; Fig. S6c referenced

Cyclic voltammetry and galvanostatic charge-discharge for Zn2(bdc)2P

Voltammetry Galvanostatic cycling

Zn2(bdc)2P composite working electrode · Electrode

Supplementary Fig. S7: CV at 4-30 mV s-1 and GCD at 1, 2 and 5 A g-1 in 3 M KOH three-electrode system.

Temperature: room temperature
Geometry: Zn2(bdc)2P/carbon black/PTFE on nickel foam
Context: Zn-only pristine framework formulated as composite electrode control.
Measurement source: SI p.4 · Supplementary Materials · Fig. S7

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Zn2(bdc)2P CV scan-rate range	4-30 mV s-1	—	range	Caption Range	SI p.4 · Supplementary Materials · Fig. S7a
Zn2(bdc)2P GCD current-density set	1, 2 and 5 A g-1	—	discrete set	Figure Axis Exact Reported	SI p.4 · Supplementary Materials · Fig. S7b

Galvanostatic charge-discharge

Galvanostatic cycling

(Zn/Ni)2(bdc)2P composite working electrode · Electrode

Three-electrode cell in 3 M KOH; potential window 0-0.5 V; current densities from 0.5 to 10 A g-1.

Temperature: room temperature
Geometry: (Zn/Ni)2(bdc)2P/carbon black/PTFE on nickel foam
Context: Target mixed-metal framework formulated as composite electrode.
Measurement source: 7 · 3.2 Electrochemical measurements · Fig. 6d,e

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
(Zn/Ni)2(bdc)2P specific capacity at 0.5 A g-1Marked as a best value within this paper	298.5 C g-1 at 0.5 A g-1	—	—	Text Exact Reported	7 · 3.2 Electrochemical measurements · Fig. 6e
(Zn/Ni)2(bdc)2P specific capacity at 10 A g-1Marked as a best value within this paper	104 C g-1 at 10 A g-1	—	—	Text Exact Reported	7 · 3.2 Electrochemical measurements · Fig. 6e