Electrochemistry Application — Insights into the electric double-layer capacitance of two-dimensional electrically conductive metal-organic frameworks

13 measurement groups · 33 results

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

CV in symmetric EDLC

Voltammetry

acetylene black/PTFE film · Electrode

Acetylene black film electrodes; 1 M NEt4BF4/acetonitrile; 10 mV s-1.

Geometry: symmetric EDLC
Context: conductive-additive control
Measurement source: p007 · Figure S5 · Fig. S5

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
acetylene black specific capacitance	2-3 F g-1	—	—	Caption Range	p007 · Figure S5 caption · Fig. S5

Long-term GCD cycling

Galvanostatic cycling

Cu3(HHTP)2 composite film electrode · Electrode

Symmetric Cu3(HHTP)2 EDLC; 0-1 V; 0.1 A g-1.

Geometry: symmetric EDLC
Context: composite electrode
Measurement source: p005 · Results and discussion · Fig. 4b; Fig. S23

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
capacitance retention after 10000 cycles at 0.1 A g-1	32% after 10,000 cycles	—	—	Text Rounded Reported	p005 · Results and discussion · Fig. 4b

Long-term GCD cycling

Galvanostatic cycling

Cu3(HHTP)2 composite film electrode · Electrode

Symmetric Cu3(HHTP)2 EDLC; 0-1 V; 1 A g-1.

Geometry: symmetric EDLC
Context: composite electrode
Measurement source: p005 · Results and discussion · Fig. 4b; Fig. S20-S22

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
capacitance retention after 10000 cycles at 1 A g-1	86% after 10000 cycles	—	—	Text Rounded Reported	p005 · Results and discussion · Fig. 4b
capacitance retention after 30000 cycles at 1 A g-1Marked as a best value within this paper	81% over 30,000 cycles	—	—	Text Rounded Reported	p005 · Results and discussion · Fig. 4b
capacitance retention after 5000 cycles at 1 A g-1	90% after 5000 cycles	—	—	Text Rounded Reported	p005 · Results and discussion · Fig. 4b

GCD and EIS performance comparison

Impedance spectroscopy Galvanostatic cycling

Cu3(HHTP)2 symmetric EDLC cell 1 · Electrode

0.04-0.05 A g-1, 0-1 V; 1 M NEt4BF4/acetonitrile; symmetric EDLC.

Geometry: symmetric EDLC
Context: composite electrode
Measurement source: p023 · Table S3 · Table S3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Cell 1 specific capacitanceMarked as a best value within this paper	114 F g-1 at 0.04-0.05 A g-1, 0-1 V	—	—	SI Table Exact Reported	p023 · Table S3 · Table S3
Cell 1 ESR from EISMarked as a best value within this paper	6.6 Ohm	—	—	SI Table Exact Reported	p023 · Table S3 · Table S3
Cell 1 ESR from GCDMarked as a best value within this paper	7.6 Ohm	—	—	SI Table Exact Reported	p023 · Table S3 · Table S3
Cell 1 Cu3(HHTP)2 mass loading per electrode	14.8 mg cm-2	—	—	SI Table Exact Reported	p023 · Table S3 · Table S3

GCD and EIS performance comparison

Impedance spectroscopy Galvanostatic cycling

Cu3(HHTP)2 symmetric EDLC cell 2 · Electrode

0.04-0.05 A g-1, 0-1 V; 1 M NEt4BF4/acetonitrile; symmetric EDLC.

Geometry: symmetric EDLC
Context: composite electrode
Measurement source: p023 · Table S3 · Table S3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
areal capacitance sample A/cell 2	14.0 uF cm-2	—	—	SI Table Exact Reported	p024 · Table S4 · Table S4
Cell 2 specific capacitance	111 F g-1 at 0.04-0.05 A g-1, 0-1 V	—	—	SI Table Exact Reported	p023 · Table S3 · Table S3
Cell 2 ESR from EIS	13.6 Ohm	—	—	SI Table Exact Reported	p023 · Table S3 · Table S3

GCD and EIS performance comparison

Impedance spectroscopy Galvanostatic cycling

Cu3(HHTP)2 symmetric EDLC cell 3 · Electrode

0.04-0.05 A g-1, 0-1 V; 1 M NEt4BF4/acetonitrile; symmetric EDLC.

Geometry: symmetric EDLC
Context: composite electrode
Measurement source: p023 · Table S3 · Table S3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Cell 3 specific capacitance	110 F g-1 at 0.04-0.05 A g-1, 0-1 V	—	—	SI Table Exact Reported	p023 · Table S3 · Table S3
Cell 3 ESR from EIS	17.3 Ohm	—	—	SI Table Exact Reported	p023 · Table S3 · Table S3

GCD areal-capacitance comparison

Galvanostatic cycling

Cu3(HHTP)2 symmetric EDLC cell 4 from sample B · Electrode

0.04-0.05 A g-1, 0.8/1 V; 1 M NEt4BF4/acetonitrile; symmetric EDLC from Cu3(HHTP)2 sample B.

Geometry: symmetric EDLC
Context: composite electrode from sample B
Measurement source: p024 · Table S4 · Table S4

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
areal capacitance sample B/cell 4	16.0 uF cm-2	—	—	SI Table Exact Reported	p024 · Table S4 · Table S4

GCD areal-capacitance comparison

Galvanostatic cycling

Cu3(HHTP)2 symmetric EDLC cell 5 from soaked sample X · Electrode

0.04-0.05 A g-1, 0.8 V stable window; 1 M NEt4BF4/acetonitrile; symmetric EDLC from soaked Cu3(HHTP)2 sample X.

Geometry: symmetric EDLC
Context: composite electrode from soaked sample X
Measurement source: p024 · Table S4 · Table S4

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
areal capacitance sample X/cell 5Marked as a best value within this paper	23.1 uF cm-2 at stable window 0.8 V	—	—	SI Table Exact Reported	p024 · Table S4 · Table S4

Cyclic voltammetry and galvanostatic charge-discharge in symmetric EDLC

Voltammetry Galvanostatic cycling

Cu3(HHTP)2 composite film electrode · Electrode

Cu3(HHTP)2 composite film electrodes; 1 M NEt4BF4 in acetonitrile; CV scan rate 10 mV s-1; GCD current densities varied.

Atmosphere: assembled in N2-filled glovebox; tested after air-tight sealing
Geometry: symmetric Swagelok EDLC
Context: composite electrode with carbon additive
Measurement source: p003 · Results and discussion · Fig. 2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
specific capacitance range across independent Cu3(HHTP)2 EDLCsMarked as a best value within this paper	110-114 F g-1 at 0.04-0.05 A g-1	—	—	Text Range	p004 · Results and discussion · Table S3
EDLC CV/GCD behaviour	Nearly rectangular CV traces and triangular GCD traces, indicative of electric double-layer capacitance.	—	—	Text Qualitative	p003 · Results and discussion · Fig. 2
faradaic process onset in symmetric-cell CV	faradaic processes centred at ca. 1.1 V beyond 1 V	—	—	Caption Approximate	p010 · Figure S10 caption · Fig. S10
initial symmetric-cell double-layer voltage window	approximately 1 V	—	—	Text Approximate	p003 · Results and discussion · Fig. S10
Cu3(HHTP)2 capacitance retention from 0.25 to 2 A g-1	79% between 0.25-2 A g-1	—	—	Text Rounded Reported	p004 · Results and discussion · Fig. S15
Cu3(HHTP)2 capacitance retention from 0.25 to 2.5 A g-1	72% between 0.25-2.5 A g-1	—	—	Text Rounded Reported	p004 · Results and discussion · Fig. S15
faradaic activity at slow scan rate	At 0.1 mV s-1 up to 1 V, faradaic activity observed after reaching ca. 0.8 V.	—	—	Caption Approximate	p017 · Figure S19 caption · Fig. S19

CV, GCD and EIS in symmetric EDLC without conductive additive

Impedance spectroscopy Voltammetry Galvanostatic cycling

Cu3(HHTP)2/PTFE film without conductive additive · Electrode

95 wt% Cu3(HHTP)2/5 wt% PTFE electrodes; 1 M NEt4BF4/acetonitrile; very low scan rates/current densities required.

Geometry: symmetric EDLC
Context: control excluding conductive carbon additive
Measurement source: p008 · Figures S6-S7 · Figs. S6-S7

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
no-conductive-additive capacitance at very low current	114 F g-1 at 0.0025 A g-1	—	—	Caption Exact Reported	p008 · Figure S7 caption · Fig. S7
no-conductive-additive ESR from GCD voltage drop	approximately 10,000-15,000 Ohm	—	—	Caption Range	p008 · Figure S7 caption · Fig. S7

Three-electrode cyclic voltammetry

Voltammetry

Cu3(HHTP)2 composite film electrode · Electrode

Cu3(HHTP)2 composite working electrode; overcapacitive YP50F counter electrode; Ag pseudo-reference; 1 M NEt4BF4/acetonitrile; dry oxygen-free N2 glovebox.

Atmosphere: dry and oxygen-free N2-filled glovebox
Geometry: Swagelok PFA-820-3 three-electrode cell
Context: composite electrode
Measurement source: p008 · Three-electrode cell assembly · Figs. S11-S12

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
negative-direction faradaic-free limit vs Ag	from +0.33 V open-circuit potential to -0.27 V vs Ag	—	—	Text Rounded Reported	p003-p004 · Results and discussion · Fig. S11
positive-direction faradaic-free limit vs Ag	from +0.19 V open-circuit potential to +0.79 V vs Ag	—	—	Text Rounded Reported	p004 · Results and discussion · Fig. S12
working voltage window inferred from three-electrode tests	ca. 1.0-1.2 V	—	—	Text Range	p004 · Results and discussion · Figs. S11-S12

GCD with increasing final cell voltages and CV stress test

Voltammetry Galvanostatic cycling

Cu3(HHTP)2 composite film electrode · Electrode

Symmetric Cu3(HHTP)2 EDLC; 0.1 A g-1 GCD with increasing final voltages; CV up to 1.6 V at 10 mV s-1.

Geometry: symmetric EDLC
Context: composite electrode
Measurement source: p004 · Results and discussion · Fig. 4a; Fig. S16

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
symmetric-cell voltage limit under GCD conditions	approximately 1.3 V	—	—	Text Approximate	p004 · Results and discussion · Fig. 4a

CV, GCD rate and cycle testing in symmetric EDLC

Voltammetry Galvanostatic cycling

YP50F activated-carbon film electrode · Electrode

YP50F film electrodes; 1 M NEt4BF4/acetonitrile; 0-2.5 V; coin-cell format.

Atmosphere: assembled in N2-filled glovebox
Geometry: CR2032 SS316 coin cell
Context: commercial activated-carbon comparator
Measurement source: p020 · Figure S25 · Fig. S25

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
YP50F capacitance retention after 10000 cyclesMarked as a best value within this paper	99% over 10,000 cycles, 0-2.5 V at 2 A g-1	—	—	Text Rounded Reported	p005 · Results and discussion · Fig. S24
YP50F capacitance retention from 0.5 to 10 A g-1Marked as a best value within this paper	94% between 0.5-10 A g-1	—	—	Text Rounded Reported	p006 · Results and discussion · Fig. S25
YP50F specific capacitance in this system	ca. 90-100 F g-1	—	—	Text Range	p005 · Results and discussion · Fig. S25
YP50F working double-layer voltage window	ca. 2.5 V	—	—	Text Approximate	p006 · Results and discussion · Fig. S25