Electrochemistry Application — Two-Dimensional π-d Conjugated Conductive Metal-Organic Framework with Triple Active Centers as High-Performance Cathodes for Flexible Zinc Batteries

8 measurement groups · 38 results

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

Cyclic voltammetry

Voltammetry

1D Cu-TABQ composite cathode in CR2032 Zn cell · Electrode

2032 Zn button cell, zinc metal anode; sweep rate 0.2 mV s-1, voltage window 0.3-1.5 V vs Zn2+/Zn.

Geometry: CR2032 coin cell
Context: composite cathode containing pristine 1D Cu-TABQ active material
Measurement source: main p.3 · Electrochemical Performance · Figure 3b

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
1D Cu-TABQ low-voltage redox peak pair	0.79/0.68 V	—	—	Text Exact Reported	main p.3 · Electrochemical Performance · Figure 3b
1D Cu-TABQ high-voltage redox peak pair	1.01/0.91 V	—	—	Text Exact Reported	main p.3 · Electrochemical Performance · Figure 3b

Cyclic voltammetry

Voltammetry

2D Cu-TABQ composite cathode in CR2032 Zn cell · Electrode

2032 Zn button cell, zinc metal anode, 2M Zn(CF3SO3)2 electrolyte; sweep rate 0.2 mV s-1, voltage window 0.3-1.5 V vs Zn2+/Zn.

Geometry: CR2032 coin cell
Context: composite cathode containing pristine 2D Cu-TABQ active material
Measurement source: main p.3 · Electrochemical Performance · Figure 3a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
2D Cu-TABQ CV oxidation peak at low potential	0.72 V	—	—	Text Exact Reported	main p.3 · Electrochemical Performance · Figure 3a
2D Cu-TABQ CV oxidation intermediate peak	0.81 V	—	—	Text Exact Reported	main p.3 · Electrochemical Performance · Figure 3a
2D Cu-TABQ CV oxidation peak	0.97 V	—	—	Text Exact Reported	main p.3 · Electrochemical Performance · Figure 3a
2D Cu-TABQ CV oxidation peak at highest potential	1.15 V	—	—	Text Exact Reported	main p.3 · Electrochemical Performance · Figure 3a
2D Cu-TABQ CV reduction peak	0.6 V	—	—	Text Exact Reported	main p.3 · Electrochemical Performance · Figure 3a
2D Cu-TABQ CV reduction peak	0.74 V	—	—	Text Exact Reported	main p.3 · Electrochemical Performance · Figure 3a

Electrochemical impedance spectroscopy

Impedance spectroscopy

2D Cu-TABQ composite cathode in CR2032 Zn cell · Electrode

Initial-state EIS of 1D and 2D Cu-TABQ cathodes; 0.01 to 100000 Hz.

Geometry: CR2032 coin cell
Context: composite cathodes containing 2D or 1D Cu-TABQ
Measurement source: main pp.4,8 · Electrochemical Performance; Electrochemical Measurements · Figure S9

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
1D Cu-TABQ charge-transfer resistance	approximately 1350 ohm	—	visual estimate from SI Figure S9 Nyquist semicircle	Figure Axis Uncertain	SI p.8 · Supporting Figures · Figure S9
2D Cu-TABQ charge-transfer resistanceMarked as a best value within this paper	Rct = 554.4 ohm	—	—	Text Exact Reported	main p.4 · Electrochemical Performance · Figure S9

Flexible Zn battery GCD, bending, cycling and open-circuit voltage

Galvanostatic cycling

Flexible 2D Cu-TABQ//Zn cell with PVA/Zn(CF3SO3)2 hydrogel electrolyte · Electrode

Flexible 2D Cu-TABQ//Zn cell with PVA/Zn(CF3SO3)2 hydrogel electrolyte; bending angles 0, 60, 120 and 180 degrees; cycling at 0.2 and 2 A g-1.

Geometry: Flexible 2 x 3 cm2 sandwich cell
Context: flexible composite device containing 2D Cu-TABQ cathode
Measurement source: main p.6 · Flexible Batteries · Figure 6, Figures S14-S19

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Flexible 2D Cu-TABQ//Zn capacity at 0 degree bendingMarked as a best value within this paper	158.6 mAh g-1 under 0 degree	—	—	Text Exact Reported	main p.6 · Flexible Batteries · Figure 6b
Flexible 2D Cu-TABQ//Zn capacity at 120 degree bending	138.6 mAh g-1 under 120 degree	—	—	Text Exact Reported	main p.6 · Flexible Batteries · Figure 6b
Flexible 2D Cu-TABQ//Zn capacity at 180 degree bending	136 mAh g-1 under 180 degree	—	—	Text Exact Reported	main p.6 · Flexible Batteries · Figure 6b
Flexible 2D Cu-TABQ//Zn capacity at 60 degree bending	146.3 mAh g-1 under 60 degree	—	—	Text Exact Reported	main p.6 · Flexible Batteries · Figure 6b
Flexible 2D Cu-TABQ//Zn capacity after 50 cycles at 0.2 A g-1	144.5 mAh g-1 after 50 cycles at 0.2 A g-1	—	—	Text Exact Reported	main p.2 · Introduction · Figure 6c; Figure S17
Flexible 2D Cu-TABQ//Zn capacity after 500 cycles at 2 A g-1Marked as a best value within this paper	92.5 mAh g-1 over 500 times at 2 A g-1	—	—	Text Exact Reported	main p.7 · Flexible Batteries · Figure 6d; Figure S19
Flexible 2D Cu-TABQ battery open-circuit voltage	about 1.21 V	—	—	Text Approximate	main p.7 · Flexible Batteries · Figure 6e
Flexible 2D Cu-TABQ//Zn capacity retention after 50 cyclesMarked as a best value within this paper	64.4% after 50 cycles at 0.2 A g-1	—	—	Text Exact Reported	main p.7 · Flexible Batteries · Figure 6c; Figure S17

Galvanostatic charge/discharge, rate performance and cycling

Galvanostatic cycling

1D Cu-TABQ composite cathode in CR2032 Zn cell · Electrode

CR2032 Zn cell in 2M Zn(CF3SO3)2 electrolyte; 1D Cu-TABQ control tested under same current densities as 2D Cu-TABQ.

Geometry: CR2032 coin cell
Context: composite cathode containing 1D Cu-TABQ
Measurement source: main p.4 · Electrochemical Performance · Figure 3d-e, Figure S4-S5

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
1D Cu-TABQ capacity after 1000 cycles at 2.0 A g-1	approximately 25 mAh g-1 after 1000 cycles at 2.0 A g-1	—	visual estimate from Figure 3e	Figure Axis Approximate	main p.4 · Electrochemical Performance · Figure 3e
1D Cu-TABQ reversible capacity at 0.2 A g-1	136 mAh g-1 at 0.2 A g-1	—	—	Text Exact Reported	main p.4 · Electrochemical Performance · Figure 3d
1D Cu-TABQ reversible capacity at 0.5 A g-1	184 mAh g-1 at 0.5 A g-1	—	—	Text Exact Reported	main p.4 · Electrochemical Performance · Figure 3d
1D Cu-TABQ reversible capacity at 1.0 A g-1	122 mAh g-1 at 1.0 A g-1	—	—	Text Exact Reported	main p.4 · Electrochemical Performance · Figure 3d
1D Cu-TABQ reversible capacity at 2.0 A g-1	97 mAh g-1 at 2.0 A g-1	—	—	Text Exact Reported	main p.4 · Electrochemical Performance · Figure 3d
1D Cu-TABQ reversible capacity at 5.0 A g-1	83 mAh g-1 at 5.0 A g-1	—	—	Text Exact Reported	main p.4 · Electrochemical Performance · Figure 3d

Galvanostatic charge/discharge, rate performance and cycling

Galvanostatic cycling

2D Cu-TABQ composite cathode in CR2032 Zn cell · Electrode

CR2032 Zn cell in 2M Zn(CF3SO3)2 electrolyte; GCD at 0.2 A g-1 and rate/cycling tests from 0.2 to 5.0 A g-1.

Geometry: CR2032 coin cell
Context: composite cathode containing 2D Cu-TABQ
Measurement source: main p.4 · Electrochemical Performance · Figure 3c-e, Figure S5, Table S1

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
2D Cu-TABQ initial discharge capacity at 0.2 A g-1Marked as a best value within this paper	297.7 mAh g-1 at 0.2 A g-1	—	—	Text Exact Reported	main p.4 · Electrochemical Performance · Figure 3c
2D Cu-TABQ capacity after 1000 cycles at 2.0 A g-1Marked as a best value within this paper	98.2 mAh g-1 after 1000 cycles at 2.0 A g-1	—	—	Text Exact Reported	main p.4 · Electrochemical Performance · Figure 3e; Table S1
2D Cu-TABQ reversible capacity at 0.2 A g-1 in rate test	294 mAh g-1 at 0.2 A g-1	—	—	Text Exact Reported	main p.4 · Electrochemical Performance · Figure 3d
2D Cu-TABQ reversible capacity at 0.5 A g-1	247 mAh g-1 at 0.5 A g-1	—	—	Text Exact Reported	main p.4 · Electrochemical Performance · Figure 3d
2D Cu-TABQ reversible capacity at 1.0 A g-1	205 mAh g-1 at 1.0 A g-1	—	—	Text Exact Reported	main p.4 · Electrochemical Performance · Figure 3d
2D Cu-TABQ reversible capacity at 2.0 A g-1	184 mAh g-1 at 2.0 A g-1	—	—	Text Exact Reported	main p.4 · Electrochemical Performance · Figure 3d
2D Cu-TABQ reversible capacity at 5.0 A g-1	156 mAh g-1 at 5.0 A g-1	—	—	Text Exact Reported	main p.4 · Electrochemical Performance · Figure 3d
SI Table S1 this-work MOF cathode capacity comparisonMarked as a best value within this paper	2D Cu-TABQ: 98.2 mAh g-1 (2 A g-1/1000 cycles)	—	—	SI Table Exact Reported	SI p.18 · Supporting Table · Table S1

Scan-rate-dependent CV and capacitive contribution analysis

Voltammetry

2D Cu-TABQ composite cathode in CR2032 Zn cell · Electrode

CV scan rates 0.2-1.0 mV s-1; b-value fitting and k1v/k2v1/2 capacitive/diffusion separation.

Geometry: CR2032 coin cell
Context: composite cathode containing 2D Cu-TABQ
Measurement source: main p.5 · Reaction Kinetics · Figure 3f-h, Figure S10

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
2D Cu-TABQ b-value range	between 0.5 and 1	—	—	Text Range	main p.5 · Reaction Kinetics · Figure 3g
2D Cu-TABQ capacitive contribution at 0.4 mV s-1	65% at 0.4 mV s-1	—	—	Text Exact Reported	main p.5 · Reaction Kinetics · Figure S10
2D Cu-TABQ maximum pseudocapacitive contribution across scan ratesMarked as a best value within this paper	85%	—	—	Text Exact Reported	main p.5 · Reaction Kinetics · Figure 3h
2D Cu-TABQ minimum pseudocapacitive contribution across scan rates	55%	—	—	Text Exact Reported	main p.5 · Reaction Kinetics · Figure 3h

Electrolyte immersion/solubility visual test

Flexible 2D Cu-TABQ//Zn cell with PVA/Zn(CF3SO3)2 hydrogel electrolyte · Electrode

2D Cu-TABQ immersed in 2M Zn(CF3SO3)2 aqueous electrolyte and PVA/Zn(CF3SO3)2 hydrogel electrolyte for 0.5, 12 and 24 h.

Geometry: Vial immersion photographs
Context: stability context for flexible cell
Measurement source: SI p.16 · Supporting Figures · Figure S18

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
2D Cu-TABQ capacity retention in conventional electrolyte	36.4% after 50 cycles	—	—	Text Exact Reported	main p.7 · Flexible Batteries · Figure S17-S18
Hydrogel electrolyte suppresses 2D Cu-TABQ dissolutionMarked as a best value within this paper	less dissolution in PVA/Zn(CF3SO3)2 hydrogel than in 2M Zn(CF3SO3)2 aqueous electrolyte	—	—	Visual Estimate Qualitative	main p.7 · Flexible Batteries · Figure S18