Electrochemistry Application — Synergistic effect of Co/Ni bimetallic metal–organic nanostructures for enhanced electrochemical energy storage

13 measurement groups · 33 results

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

Two-electrode asymmetric supercapacitor CV, GCD and cycling

Voltammetry Galvanostatic cycling

Co/Ni-MOF-2:1//AC ASC device · Electrode

Co/Ni-MOF-2:1 positive electrode and activated carbon negative electrode in 3.0 M KOH; 0-1.4 V CV window; GCD 0.5-5 A g-1; cycling at 5 A g-1.

Atmosphere: 3.0 M KOH aqueous electrolyte
Geometry: two-electrode asymmetric supercapacitor full cell
Context: application device with activated carbon
Measurement source: p006-p007 / article pp.394-395 · 2.2 Supercapacitor · Fig. 6

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Purchased activated carbon electrode specific capacitance	148 F g-1 at 0.5 A g-1	148 F g-1	—	Text Exact Reported	SI text p003 · Figure S25 / ASC device details · Figure S25
Co/Ni-MOF-2:1//AC ASC specific capacitance at 0.5 A g-1Marked as a best value within this paper	228 F g-1 at 0.5 A g-1	228 F g-1	—	Text Exact Reported	p006 / article p.394 · 2.2 Supercapacitor · Fig. 6b,c
Co/Ni-MOF-2:1//AC ASC capacitance retention after 5000 cyclesMarked as a best value within this paper	95.5 % after 5000 cycles at 5 A g-1	0.955 fraction	—	Text Exact Reported	p006 / article p.394 · 2.2 Supercapacitor · Fig. 6d
ASC positive-to-negative active mass ratio	1:2.8	—	—	Text Exact Reported	SI text p003 · Figure S25 / ASC device details · Figure S25
Co/Ni-MOF-2:1//AC ASC capacitance retention at 5 A g-1	68 % capacity retention at 5 A g-1	0.68 fraction	—	Text Exact Reported	p006 / article p.394 · 2.2 Supercapacitor · Fig. 6c
ASC CV potential window upper limit	0-1.4 V	—	—	Text Exact Reported	p006 / article p.394 · 2.2 Supercapacitor · Fig. 6a

Cyclic voltammetry (CV), three-electrode cell

Voltammetry

Co/Ni-MOF-2:1 three-electrode working electrode · Electrode

3.0 M KOH at room temperature; Hg/HgO reference; 0-0.6 V window; scan rates including 20 mV s-1 and 10-100 mV s-1.

Atmosphere: 3.0 M KOH aqueous electrolyte
Geometry: MOF/acetylene black/PTFE on nickel foam working electrode; Pt counter; Hg/HgO reference
Context: electrode composite with conductive carbon and PTFE binder
Measurement source: p003-p005 / article pp.391-393 · 2.2 Supercapacitor · Fig. 4a; Fig. 5a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
CV redox behaviour	pair of redox peaks observed in 0-0.6 V potential window at 20 mV s-1	—	—	Text Exact Reported	p003 / article p.391 · 2.2 Supercapacitor · Fig. 4a; Figure S12a

CV kinetic analysis (log(i) versus log(v) b-value)

Voltammetry

Co/Ni-MOF-1:1 three-electrode working electrode · Electrode

Specific peak currents extracted from CV curves at scan rates from 10 to 100 mV s-1 in 3.0 M KOH.

Atmosphere: 3.0 M KOH aqueous electrolyte
Geometry: three-electrode MOF/acetylene black/PTFE on nickel foam electrode
Context: electrode composite with conductive carbon and PTFE binder
Measurement source: SI rendered p.22 · Figure S18 · Figure S18

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Co/Ni-MOF-1:1 Peak A b value	b=0.64	—	—	Figure Axis Rounded Reported	SI rendered p.22 · Figure S18 · Figure S18
Co/Ni-MOF-1:1 Peak B b value	b=0.52	—	—	Figure Axis Rounded Reported	SI rendered p.22 · Figure S18 · Figure S18

CV kinetic analysis (log(i) versus log(v) b-value)

Voltammetry

Co/Ni-MOF-1:2 three-electrode working electrode · Electrode

Specific peak currents extracted from CV curves at scan rates from 10 to 100 mV s-1 in 3.0 M KOH.

Atmosphere: 3.0 M KOH aqueous electrolyte
Geometry: three-electrode MOF/acetylene black/PTFE on nickel foam electrode
Context: electrode composite with conductive carbon and PTFE binder
Measurement source: SI rendered p.22 · Figure S18 · Figure S18

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Co/Ni-MOF-1:2 Peak A b value	b=0.61	—	—	Figure Axis Rounded Reported	SI rendered p.22 · Figure S18 · Figure S18
Co/Ni-MOF-1:2 Peak B b value	b=0.58	—	—	Figure Axis Rounded Reported	SI rendered p.22 · Figure S18 · Figure S18

CV kinetic analysis (b-value and capacitive/diffusion contribution)

Voltammetry

Co/Ni-MOF-2:1 three-electrode working electrode · Electrode

CV curves from 10 to 100 mV s-1 in 3.0 M KOH; ip = a v^b and i(V) = k1 v + k2 v^1/2 analysis.

Atmosphere: 3.0 M KOH aqueous electrolyte
Geometry: three-electrode MOF/acetylene black/PTFE on nickel foam electrode
Context: target electrode composite
Measurement source: p005-p006 / article pp.393-394 · 2.2 Supercapacitor · Fig. 5

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Co/Ni-MOF-2:1 anodic peak b value	0.67	—	—	Text Exact Reported	p005 / article p.393 · 2.2 Supercapacitor · Fig. 5b
Co/Ni-MOF-2:1 cathodic peak b value	0.72	—	—	Text Exact Reported	p005 / article p.393 · 2.2 Supercapacitor · Fig. 5b
Capacitive-type contribution at 10 mV s-1	about 40.1 %	0.401 fraction	about	Text Approximate	p006 / article p.394 · 2.2 Supercapacitor · Fig. 5c,d
Capacitive-type contribution at 100 mV s-1Marked as a best value within this paper	67.3 %	0.673 fraction	—	Figure Axis Rounded Reported	p006 / article p.394 · 2.2 Supercapacitor · Fig. 5d
Capacitive-type contribution at 20 mV s-1	42.9 %	0.429 fraction	—	Figure Axis Rounded Reported	p006 / article p.394 · 2.2 Supercapacitor · Fig. 5d
Capacitive-type contribution at 30 mV s-1	45.4 %	0.454 fraction	—	Figure Axis Rounded Reported	p006 / article p.394 · 2.2 Supercapacitor · Fig. 5d
Capacitive-type contribution at 50 mV s-1	51.0 %	0.51 fraction	—	Figure Axis Rounded Reported	p006 / article p.394 · 2.2 Supercapacitor · Fig. 5d
Capacitive-type contribution at 80 mV s-1	60.3 %	0.603 fraction	—	Figure Axis Rounded Reported	p006 / article p.394 · 2.2 Supercapacitor · Fig. 5d

CV kinetic analysis (log(i) versus log(v) b-value)

Voltammetry

Co/Ni-MOF-3:1 three-electrode working electrode · Electrode

Specific peak currents extracted from CV curves at scan rates from 10 to 100 mV s-1 in 3.0 M KOH.

Atmosphere: 3.0 M KOH aqueous electrolyte
Geometry: three-electrode MOF/acetylene black/PTFE on nickel foam electrode
Context: electrode composite with conductive carbon and PTFE binder
Measurement source: SI rendered p.22 · Figure S18 · Figure S18

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Co/Ni-MOF-3:1 Peak A b value	b=0.80	—	—	Figure Axis Rounded Reported	SI rendered p.22 · Figure S18 · Figure S18
Co/Ni-MOF-3:1 Peak B b value	b=0.62	—	—	Figure Axis Rounded Reported	SI rendered p.22 · Figure S18 · Figure S18

CV kinetic analysis (log(i) versus log(v) b-value)

Voltammetry

Ni-MOF three-electrode working electrode · Electrode

Specific peak currents extracted from CV curves at scan rates from 10 to 100 mV s-1 in 3.0 M KOH.

Atmosphere: 3.0 M KOH aqueous electrolyte
Geometry: three-electrode MOF/acetylene black/PTFE on nickel foam electrode
Context: electrode composite with conductive carbon and PTFE binder
Measurement source: SI rendered p.22 · Figure S18 · Figure S18

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Ni-MOF Peak A b value	b=0.52	—	—	Figure Axis Rounded Reported	SI rendered p.22 · Figure S18 · Figure S18
Ni-MOF Peak B b value	b=0.50	—	—	Figure Axis Rounded Reported	SI rendered p.22 · Figure S18 · Figure S18

Galvanostatic cycling stability

Galvanostatic cycling

Co/Ni-MOF-2:1 three-electrode working electrode · Electrode

3.0 M KOH; 5 A g-1; 5000 cycles in three-electrode configuration.

Atmosphere: 3.0 M KOH aqueous electrolyte
Geometry: MOF/acetylene black/PTFE on nickel foam working electrode
Context: target electrode composite
Measurement source: p004-p005 / article pp.392-393 · 2.2 Supercapacitor · Fig. 4e

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Co/Ni-MOF-2:1 capacitance retention after 5000 cyclesMarked as a best value within this paper	72 % after 5000 cycles at 5 A g-1	0.72 fraction	—	Text Exact Reported	p004 / article p.392 · 2.2 Supercapacitor · Fig. 4e

Galvanostatic charge-discharge (GCD), three-electrode cell

Galvanostatic cycling

Co/Ni-MOF-1:1 three-electrode working electrode · Electrode

3.0 M KOH at room temperature; capacitance calculated from GCD at 0.5 A g-1.

Atmosphere: 3.0 M KOH aqueous electrolyte
Geometry: MOF/acetylene black/PTFE on nickel foam working electrode; Pt counter; Hg/HgO reference
Context: comparison electrode composite
Measurement source: p004 / article p.392 · 2.2 Supercapacitor · Figure S12b,c

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Co/Ni-MOF-1:1 specific capacitance at 0.5 A g-1	551 F g-1 at 0.5 A g-1	551 F g-1	—	Text Exact Reported	p004 / article p.392 · 2.2 Supercapacitor · Figure S12c

Galvanostatic charge-discharge (GCD), three-electrode cell

Galvanostatic cycling

Co/Ni-MOF-1:2 three-electrode working electrode · Electrode

3.0 M KOH at room temperature; capacitance calculated from GCD at 0.5 A g-1.

Atmosphere: 3.0 M KOH aqueous electrolyte
Geometry: MOF/acetylene black/PTFE on nickel foam working electrode; Pt counter; Hg/HgO reference
Context: comparison electrode composite
Measurement source: p004 / article p.392 · 2.2 Supercapacitor · Figure S12b,c

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Co/Ni-MOF-1:2 specific capacitance at 0.5 A g-1	509 F g-1 at 0.5 A g-1	509 F g-1	—	Text Exact Reported	p004 / article p.392 · 2.2 Supercapacitor · Figure S12c

Galvanostatic charge-discharge (GCD), three-electrode cell

Galvanostatic cycling

Co/Ni-MOF-2:1 three-electrode working electrode · Electrode

3.0 M KOH at room temperature; capacitance calculated from GCD curves at 0.5-5 A g-1.

Atmosphere: 3.0 M KOH aqueous electrolyte
Geometry: MOF/acetylene black/PTFE on nickel foam working electrode; Pt counter; Hg/HgO reference
Context: target electrode composite
Measurement source: p004-p005 / article pp.392-393 · 2.2 Supercapacitor · Fig. 4b,c

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Co/Ni-MOF-2:1 specific capacitance at 0.5 A g-1Marked as a best value within this paper	610 F g-1 at 0.5 A g-1	610 F g-1	—	Text Exact Reported	p004 / article p.392 · 2.2 Supercapacitor · Fig. 4c
Co/Ni-MOF-2:1 capacitance retention from 0.5 to 5 A g-1Marked as a best value within this paper	about 88 % retained when current density increases from 0.5 A g-1 to 5 A g-1	0.88 fraction	about	Text Approximate	p004 / article p.392 · 2.2 Supercapacitor · Fig. 4c
Co/Ni-MOF-2:1 Table S2 voltage window	0.55 V	—	—	SI Table Exact Reported	SI rendered p.20 · Table S2 · Table S2

Galvanostatic charge-discharge (GCD), three-electrode cell

Galvanostatic cycling

Co/Ni-MOF-3:1 three-electrode working electrode · Electrode

3.0 M KOH at room temperature; capacitance calculated from GCD at 0.5 A g-1.

Atmosphere: 3.0 M KOH aqueous electrolyte
Geometry: MOF/acetylene black/PTFE on nickel foam working electrode; Pt counter; Hg/HgO reference
Context: comparison electrode composite
Measurement source: p004 / article p.392 · 2.2 Supercapacitor · Figure S12b,c

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Co/Ni-MOF-3:1 specific capacitance at 0.5 A g-1	361 F g-1 at 0.5 A g-1	361 F g-1	—	Text Exact Reported	p004 / article p.392 · 2.2 Supercapacitor · Figure S12c

Galvanostatic charge-discharge (GCD), three-electrode cell

Galvanostatic cycling

Ni-MOF three-electrode working electrode · Electrode

3.0 M KOH at room temperature; capacitance calculated from GCD curves at 0.5-5 A g-1.

Atmosphere: 3.0 M KOH aqueous electrolyte
Geometry: MOF/acetylene black/PTFE on nickel foam working electrode; Pt counter; Hg/HgO reference
Context: pristine-control electrode composite
Measurement source: p004-p005 / article pp.392-393 · 2.2 Supercapacitor · Fig. 4b,c

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Ni-MOF specific capacitance at 0.5 A g-1	425 F g-1 at 0.5 A g-1	425 F g-1	—	Text Exact Reported	p004 / article p.392 · 2.2 Supercapacitor · Fig. 4c
Ni-MOF capacitance retention after 5000 cycles	31 % after 5000 cycles at 5 A g-1	0.31 fraction	—	Text Exact Reported	p004 / article p.392 · 2.2 Supercapacitor · Fig. 4e
Ni-MOF capacitance retention from 0.5 to 5 A g-1	29 % capacitance retention	0.29 fraction	—	Text Exact Reported	p004 / article p.392 · 2.2 Supercapacitor · Fig. 4c