Electrochemistry Application — Selenium-Substitution Strategy for Enhanced Mobility, Tunable Bandgap, and Improved Electrochemical Energy Storage in Semiconducting Conjugated Coordination Polymers

5 measurement groups · 48 results

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

Cyclic voltammetry

Voltammetry

Ag4TSHQ/PTFE/carbon black electrode on carbon paper · Electrode

Three-electrode cell; 1 M KCl electrolyte; SCE reference; platinum counter; conductive carbon paper working electrode; scan rates in Figure 6 and Figure S13.

Geometry: three-electrode supercapacitor working electrode
Context: composite electrode containing pristine Ag4TSHQ powder
Measurement source: 6 · Supercapacitor Performance of Ag4TXHQ Species · Figure 6a; Figure S13

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
AG4TSHQ capacitive contribution at 10 mV/s	14% capacitive contribution at 10 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
AG4TSHQ capacitive contribution at 1 mV/s	10% capacitive contribution at 1 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
AG4TSHQ capacitive contribution at 20 mV/s	20% capacitive contribution at 20 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
AG4TSHQ capacitive contribution at 30 mV/s	26% capacitive contribution at 30 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
AG4TSHQ capacitive contribution at 5 mV/s	12% capacitive contribution at 5 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
AG4TSHQ capacitive contribution at 7 mV/s	13% capacitive contribution at 7 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
AG4TSHQ diffusion-controlled contribution at 10 mV/s	86% diffusion contribution at 10 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
AG4TSHQ diffusion-controlled contribution at 1 mV/s	90% diffusion contribution at 1 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
AG4TSHQ diffusion-controlled contribution at 20 mV/s	80% diffusion contribution at 20 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
AG4TSHQ diffusion-controlled contribution at 30 mV/s	74% diffusion contribution at 30 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
AG4TSHQ diffusion-controlled contribution at 5 mV/s	88% diffusion contribution at 5 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
AG4TSHQ diffusion-controlled contribution at 7 mV/s	87% diffusion contribution at 7 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
ag4tshq redox first ox	0.395 V oxidation peak in first-cycle Ag-Se redox pair	—	—	Text Exact Reported	6 · Supercapacitor Performance of Ag4TXHQ Species · Figure S13
ag4tshq redox first red	-0.096 V reduction peak in first-cycle Ag-Se redox pair	—	—	Text Exact Reported	6 · Supercapacitor Performance of Ag4TXHQ Species · Figure S13
ag4tshq redox hqbq ox	0.122 V oxidation peak after hundreds of cycles	—	—	Text Exact Reported	6 · Supercapacitor Performance of Ag4TXHQ Species · Figure S13
ag4tshq redox hqbq red	-0.191 V reduction peak after hundreds of cycles	—	—	Text Exact Reported	6 · Supercapacitor Performance of Ag4TXHQ Species · Figure S13
charge-storage mechanism classification	battery-type rather than typical pseudocapacitance	—	—	Text Qualitative	7 · Supercapacitor Performance of Ag4TXHQ Species · Figure 6a,b

Cyclic voltammetry

Voltammetry

Ag4TTHQ/PTFE/carbon black electrode on carbon paper · Electrode

Three-electrode cell; 1 M KCl electrolyte; SCE reference; platinum counter; conductive carbon paper working electrode.

Geometry: three-electrode supercapacitor working electrode
Context: composite electrode containing pristine Ag4TTHQ powder
Measurement source: 6 · Supercapacitor Performance of Ag4TXHQ Species · Figure 6b; Figure S13

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
AG4TTHQ capacitive contribution at 10 mV/s	52% capacitive contribution at 10 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
AG4TTHQ capacitive contribution at 1 mV/s	31% capacitive contribution at 1 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
AG4TTHQ capacitive contribution at 20 mV/s	55% capacitive contribution at 20 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
AG4TTHQ capacitive contribution at 30 mV/s	60% capacitive contribution at 30 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
AG4TTHQ capacitive contribution at 5 mV/s	40% capacitive contribution at 5 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
AG4TTHQ capacitive contribution at 7 mV/s	45% capacitive contribution at 7 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
AG4TTHQ diffusion-controlled contribution at 10 mV/s	48% diffusion contribution at 10 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
AG4TTHQ diffusion-controlled contribution at 1 mV/s	69% diffusion contribution at 1 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
AG4TTHQ diffusion-controlled contribution at 20 mV/s	45% diffusion contribution at 20 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
AG4TTHQ diffusion-controlled contribution at 30 mV/s	40% diffusion contribution at 30 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
AG4TTHQ diffusion-controlled contribution at 5 mV/s	60% diffusion contribution at 5 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
AG4TTHQ diffusion-controlled contribution at 7 mV/s	55% diffusion contribution at 7 mV/s	—	—	Figure Axis Rounded Reported	17 · Supporting figures and tables · Figure S15
ag4tthq redox first ox1	0.534 V oxidation peak in first CV curve	—	—	Text Exact Reported	6 · Supercapacitor Performance of Ag4TXHQ Species · Figure S13
ag4tthq redox first ox2	-0.021 V peak in first CV curve	—	—	Text Exact Reported	6 · Supercapacitor Performance of Ag4TXHQ Species · Figure S13
ag4tthq redox first red1	0.119 V reduction/counter peak in first CV curve	—	—	Text Exact Reported	6 · Supercapacitor Performance of Ag4TXHQ Species · Figure S13
ag4tthq redox first red2	-0.284 V peak in first CV curve	—	—	Text Exact Reported	6 · Supercapacitor Performance of Ag4TXHQ Species · Figure S13
ag4tthq redox hqbq ox	0.173 V HQ/BQ peak after cycles	—	—	Text Exact Reported	6 · Supercapacitor Performance of Ag4TXHQ Species · Figure S13
ag4tthq redox hqbq red	-0.266 V HQ/BQ peak after cycles	—	—	Text Exact Reported	6 · Supercapacitor Performance of Ag4TXHQ Species · Figure S13

Electrochemical impedance spectroscopy

Impedance spectroscopy

Ag4TSHQ/PTFE/carbon black electrode on carbon paper · Electrode

Nyquist plot comparison for Ag4TSHQ and Ag4TTHQ electrodes.

Geometry: three-electrode supercapacitor working electrodes
Context: composite electrodes with pristine framework active material
Measurement source: 7 · Supercapacitor Performance of Ag4TXHQ Species · Figure 6f

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
EIS resistance comparison	both Ag4TSHQ and Ag4TTHQ exhibit slightly lower ohmic resistance and decreased charge-transfer resistance	—	—	Text Qualitative	7 · Supercapacitor Performance of Ag4TXHQ Species · Figure 6f

Galvanostatic charge/discharge

Galvanostatic cycling

Ag4TSHQ/PTFE/carbon black electrode on carbon paper · Electrode

GCD in three-electrode cell; current density series 0.5-5 A/g; capacitance calculated from discharge time.

Geometry: three-electrode supercapacitor working electrode
Context: composite electrode containing pristine Ag4TSHQ powder
Measurement source: 7 · Supercapacitor Performance of Ag4TXHQ Species · Figure 6c,d; Figure S16

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
gravimetric capacitance at 0.5 A/gMarked as a best value within this paper	340 F/g at 0.5 A/g	—	—	Text Exact Reported	7 · Supercapacitor Performance of Ag4TXHQ Species · Figure 6c; Table S6
AG4TSHQ gravimetric capacitance at 1 A/g	ca. 307 F/g at 1 A/g	—	—	Visual Estimate Approximate	7 · Supercapacitor Performance of Ag4TXHQ Species · Figure 6c
AG4TSHQ gravimetric capacitance at 2 A/g	ca. 278 F/g at 2 A/g	—	—	Visual Estimate Approximate	7 · Supercapacitor Performance of Ag4TXHQ Species · Figure 6c
AG4TSHQ gravimetric capacitance at 3 A/g	ca. 262 F/g at 3 A/g	—	—	Visual Estimate Approximate	7 · Supercapacitor Performance of Ag4TXHQ Species · Figure 6c
AG4TSHQ gravimetric capacitance at 5 A/g	ca. 235 F/g at 5 A/g	—	—	Visual Estimate Approximate	7 · Supercapacitor Performance of Ag4TXHQ Species · Figure 6c
capacitance retention after 2000 cycles at 5 A/g	80% after 2000 cycles	—	—	Text Exact Reported	7 · Supercapacitor Performance of Ag4TXHQ Species · Figure 6d

Galvanostatic charge/discharge

Galvanostatic cycling

Ag4TTHQ/PTFE/carbon black electrode on carbon paper · Electrode

GCD in three-electrode cell; current density series 0.5-5 A/g.

Geometry: three-electrode supercapacitor working electrode
Context: composite electrode containing pristine Ag4TTHQ powder
Measurement source: 7 · Supercapacitor Performance of Ag4TXHQ Species · Figure 6c,e; Figure S16

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
gravimetric capacitance at 0.5 A/g	294 F/g at 0.5 A/g	—	—	Text Exact Reported	7 · Supercapacitor Performance of Ag4TXHQ Species · Figure 6c
AG4TTHQ gravimetric capacitance at 1 A/g	ca. 266 F/g at 1 A/g	—	—	Visual Estimate Approximate	7 · Supercapacitor Performance of Ag4TXHQ Species · Figure 6c
AG4TTHQ gravimetric capacitance at 2 A/g	ca. 230 F/g at 2 A/g	—	—	Visual Estimate Approximate	7 · Supercapacitor Performance of Ag4TXHQ Species · Figure 6c
AG4TTHQ gravimetric capacitance at 3 A/g	ca. 207 F/g at 3 A/g	—	—	Visual Estimate Approximate	7 · Supercapacitor Performance of Ag4TXHQ Species · Figure 6c
AG4TTHQ gravimetric capacitance at 5 A/g	ca. 175 F/g at 5 A/g	—	—	Visual Estimate Approximate	7 · Supercapacitor Performance of Ag4TXHQ Species · Figure 6c
capacitance retention after 2000 cycles at 5 A/g	less than 70% after 2000 cycles	—	—	Text Range	7 · Supercapacitor Performance of Ag4TXHQ Species · Figure 6e