Electrochemistry Application — Enhancing the Electrochemical Energy Storage of Metal-Organic Frameworks: Linker Engineering and Size Optimization

6 measurement groups · 42 results

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

Specific capacitance comparison for Ni-MOF//AC ASCs

Ni-tdc-bpe(0.5)//AC hybrid supercapacitor · Electrode

ASC GCD at 0.5 A/g; values from Figure S21 and main-text discussion

Temperature: room temperature
Atmosphere: not reported
Geometry: asymmetric supercapacitor devices
Context: comparison across MOF//AC composite devices
Measurement source: S25 · Figure captions · Figure S21

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Ni-tdc-bpe//AC specific capacitance	120.3 F g-1 at 0.5 A g-1	—	—	Text Exact Reported	432 · Results and Discussion · Figure S21
Ni-tdc-bpy(0.5)//AC specific capacitance	156.1 F g-1 at 0.5 A g-1	—	—	Text Exact Reported	432 · Results and Discussion · Figure S21
Ni-tdc-bpy//AC specific capacitance	110.1 F g-1 at 0.5 A g-1	—	—	Text Exact Reported	432 · Results and Discussion · Figure S21

Electrochemical impedance spectroscopy (EIS)

Impedance spectroscopy

Ni-MOF working electrode series · Electrode

CHI760e working station; fitted equivalent circuit shown as inset of Figure S15

Temperature: room temperature
Atmosphere: not reported
Geometry: three-electrode Ni-MOF composite electrodes
Context: composite electrode containing pristine Ni-MOF active material
Measurement source: S19 · Figure captions · Figure S15

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
EIS charge-transfer comparisonMarked as a best value within this paper	Ni-tdc-bpe(0.5) showed smaller semicircle diameter and steeper slope, indicating smaller Rct and Warburg resistance	—	—	Text Qualitative	432 · Results and Discussion · Figure S15

b-value and capacitive/diffusion contribution analysis from CV curves

Voltammetry

Ni-MOF working electrode series · Electrode

CV scan rates 10-100 mV/s; b values from log(i) vs log(v); contribution ratios from i = k1v + k2v1/2

Temperature: room temperature
Atmosphere: not reported
Geometry: three-electrode Ni-MOF composite electrodes
Context: composite electrode containing pristine Ni-MOF active material
Measurement source: S4 · Electrochemical measurements · Equations S2-S5

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
b value Ni-tdc-bpe(0.5) peak A	0.61	—	—	Text Exact Reported	430 · Results and Discussion · Figure S7
b value Ni-tdc-bpe(0.5) peak B	0.55	—	—	Text Exact Reported	430 · Results and Discussion · Figure S7
b value Ni-tdc-bpe peak A	0.65	—	—	Text Exact Reported	430 · Results and Discussion · Figure S7
b value Ni-tdc-bpe peak B	0.54	—	—	Text Exact Reported	430 · Results and Discussion · Figure S7
b value Ni-tdc-bpy(0.5) peak A	0.62	—	—	Text Exact Reported	430 · Results and Discussion · Figure S7
b value Ni-tdc-bpy(0.5) peak B	0.59	—	—	Text Exact Reported	430 · Results and Discussion · Figure S7
b value Ni-tdc-bpy peak A	0.48	—	—	Text Exact Reported	430 · Results and Discussion · Figure S7
b value Ni-tdc-bpy peak B	0.44	—	—	Text Exact Reported	430 · Results and Discussion · Figure S7
Capacitive contribution Ni-tdc-bpe(0.5) at 100 mV/s	35.3%	—	—	Text Exact Reported	430 · Results and Discussion · Figure S12
Capacitive contribution Ni-tdc-bpe(0.5) at 20 mV/s	18.6%	—	—	Text Exact Reported	430 · Results and Discussion · Figure S12
Capacitive contribution Ni-tdc-bpe at 100 mV/sMarked as a best value within this paper	66.0%	—	—	Text Exact Reported	430 · Results and Discussion · Figure S12
Capacitive contribution Ni-tdc-bpe at 20 mV/sMarked as a best value within this paper	32.8%	—	—	Text Exact Reported	430 · Results and Discussion · Figure S12
Capacitive contribution Ni-tdc-bpy(0.5) at 100 mV/s	48.3%	—	—	Text Exact Reported	430 · Results and Discussion · Figure S12
Capacitive contribution Ni-tdc-bpy(0.5) at 20 mV/s	27.2%	—	—	Text Exact Reported	430 · Results and Discussion · Figure S12
Capacitive contribution Ni-tdc-bpy at 100 mV/s	10.3%	—	—	Text Exact Reported	430 · Results and Discussion · Figure S12
Capacitive contribution Ni-tdc-bpy at 20 mV/s	4.5%	—	—	Text Exact Reported	430 · Results and Discussion · Figure S12

Cycling stability of Ni-tdc-bpe(0.5) electrode

Ni-MOF working electrode series · Electrode

5 A/g current density for 5000 cycles in three-electrode configuration

Temperature: room temperature
Atmosphere: not reported
Geometry: Ni-tdc-bpe(0.5) composite working electrode
Context: composite electrode containing target MOF active material
Measurement source: S20 · Figure captions · Figure S16

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Ni-tdc-bpe(0.5) electrode capacitance retention	68.5% after 5000 cycles at 5 A g-1	—	—	Text Exact Reported	432 · Results and Discussion · Figure S16

Hybrid supercapacitor CV, GCD, Ragone plot, and cycling

Voltammetry Galvanostatic cycling

Ni-tdc-bpe(0.5)//AC hybrid supercapacitor · Electrode

Ni-tdc-bpe(0.5) positive electrode, AC negative electrode, 3 M KOH electrolyte; current densities 0.5-5 A/g; scan rates 10-100 mV/s

Temperature: room temperature
Atmosphere: not reported
Geometry: asymmetric hybrid supercapacitor
Context: application device built from target pristine MOF component and activated carbon
Measurement source: 432 · Results and Discussion · Figure 4

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
AC negative electrode potential window	-0.8-0 V	—	—	Text Exact Reported	432 · Results and Discussion · Figure 4b
Ni-tdc-bpe(0.5)//AC specific capacitance at 0.5 A/gMarked as a best value within this paper	202.3 F g-1 at 0.5 A g-1	—	—	Text Exact Reported	432 · Results and Discussion · Figure 4e
Ni-tdc-bpe(0.5)//AC capacitance retention from 0.5 to 5 A/g	52.6% preserved at 5 A g-1	—	—	Text Exact Reported	432 · Results and Discussion · Figure 4e
Ni-tdc-bpe(0.5)//AC Coulombic efficiency	93.5% after 5000 cycles	—	—	Text Exact Reported	432 · Results and Discussion · Figure 4g
Ni-tdc-bpe(0.5)//AC cycle-life capacitance retentionMarked as a best value within this paper	99.3% after 5000 cycles at 5 A g-1	—	—	Text Exact Reported	432 · Results and Discussion · Figure 4g
Ni-tdc-bpe(0.5)//AC device potential rangeMarked as a best value within this paper	0-1.28 V	—	—	Text Exact Reported	432 · Results and Discussion · Figure 4b
Ni-tdc-bpe(0.5)//AC maximum energy densityMarked as a best value within this paper	33.6 Wh kg-1 at 232.6 W kg-1	—	—	Text Exact Reported	432 · Results and Discussion · Figure 4f
Energy density at high power	21.6 Wh kg-1 at 2880 W kg-1	—	—	Text Exact Reported	432 · Results and Discussion · Figure 4f
HSC electrode mass ratio m+/m-	3.3	—	—	Text Exact Reported	S3 · Electrochemical measurements
Ni-tdc-bpe(0.5) positive-electrode loading	1.0~1.3 mg	—	range	Text Range	S3 · Electrochemical measurements
Ni-tdc-bpe(0.5) positive electrode potential window	0-0.55 V	—	—	Text Exact Reported	432 · Results and Discussion · Figure 4b
Power density at maximum energy density	232.6 W kg-1	—	—	Text Exact Reported	432 · Results and Discussion · Figure 4f
High power density paired value	2880 W kg-1	—	—	Text Exact Reported	432 · Results and Discussion · Figure 4f

Three-electrode CV and GCD

Voltammetry Galvanostatic cycling

Ni-MOF working electrode series · Electrode

3.0 M KOH electrolyte; Pt counter electrode; Hg/HgO reference; CHI760e station; room temperature

Temperature: room temperature
Atmosphere: not reported
Geometry: Ni-MOF/acetylene black/PTFE working electrode on nickel foam
Context: composite electrode containing pristine Ni-MOF active material
Measurement source: S3 · Electrochemical measurements

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Specific capacitance of Ni-tdc-bpe electrode at 0.5 A/g	331 F g-1 at 0.5 A g-1	—	—	Text Rounded Reported	430 · Results and Discussion · Figure 3c
Specific capacitance of Ni-tdc-bpe(0.5) electrode at 0.5 A/gMarked as a best value within this paper	650 F g-1 at 0.5 A g-1	—	—	Text Rounded Reported	430 · Results and Discussion · Figure 3c
Specific capacitance of Ni-tdc-bpe(0.5) electrode at 5 A/gMarked as a best value within this paper	321 F g-1 at 5 A g-1	—	—	Text Rounded Reported	430 · Results and Discussion · Figure 3c
Specific capacitance of Ni-tdc-bpe electrode at 5 A/g	170 F g-1 at 5 A g-1	—	—	Text Rounded Reported	430 · Results and Discussion · Figure 3c
Specific capacitance of Ni-tdc-bpy electrode at 0.5 A/g	240 F g-1 at 0.5 A g-1	—	—	Text Rounded Reported	430 · Results and Discussion · Figure 3c
Specific capacitance of Ni-tdc-bpy(0.5) electrode at 0.5 A/g	501 F g-1 at 0.5 A g-1	—	—	Text Rounded Reported	430 · Results and Discussion · Figure 3c
Specific capacitance of Ni-tdc-bpy(0.5) electrode at 5 A/g	207 F g-1 at 5 A g-1	—	—	Text Rounded Reported	430 · Results and Discussion · Figure 3c
Specific capacitance of Ni-tdc-bpy electrode at 5 A/g	123 F g-1 at 5 A g-1	—	—	Text Rounded Reported	430 · Results and Discussion · Figure 3c