Electrochemistry Application — One-Dimensional π-d Conjugated Conductive Metal-Organic Framework with Dual Redox-Active Sites for High-Capacity and Durable Cathodes for Aqueous Zinc Batteries

14 measurement groups · 48 results

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

Cyclic voltammetry

Voltammetry

Cu-BTA-H composite cathode nanosheet · Electrode

0.3-1.6 V vs Zn2+/Zn at 0.1 mV s^-1 in 2.5 M ZnSO4 aqueous electrolyte.

Geometry: CR2032 zinc-ion coin cell with zinc foil anode
Context: composite cathode
Measurement source: 3080 · Results and Discussion · Figure 2a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Cu-BTA-H anodic peak lower	approximately 0.93 V vs Zn2+/Zn	—	—	Text Approximate	3080 · Results and Discussion · Figure 2a
Cu-BTA-H anodic peak higher	approximately 1.00 V vs Zn2+/Zn	—	—	Text Approximate	3080 · Results and Discussion · Figure 2a
Cu-BTA-H cathodic peak	approximately 0.81 V vs Zn2+/Zn	—	—	Text Approximate	3080 · Results and Discussion · Figure 2a
Cu-BTA-H cathodic peak	approximately 0.66 V vs Zn2+/Zn	—	—	Text Approximate	3080 · Results and Discussion · Figure 2a

CV kinetic analysis and pseudocapacitive contribution

Voltammetry

Cu-BTA-H composite cathode nanosheet · Electrode

CV at scan rates 0.1, 0.2, 0.5, 1.0 and 2.0 mV s^-1; b values and capacitive/diffusion contributions calculated.

Geometry: CR2032 coin cell cathode
Context: composite cathode
Measurement source: 10 · Supporting Information · Figure S11a-c

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
CV b value for oxidation process	0.638	—	—	Text Exact Reported	10 · Supporting Information · Figure S11b
CV b value for reduction process	0.765	—	—	Text Exact Reported	10 · Supporting Information · Figure S11b
Surface-controlled capacity contribution at 2.0 mV s^-1	70.5%	—	—	Text Exact Reported	3081 · Results and Discussion · Figure 2f; Figure S11c

CV kinetic analysis and pseudocapacitive contribution

Voltammetry

Ni-BTA-H composite cathode nanosheet · Electrode

CV at scan rates 0.1, 0.2, 0.5, 1.0 and 2.0 mV s^-1; b values and capacitive/diffusion contributions calculated.

Geometry: CR2032 coin cell cathode
Context: composite cathode
Measurement source: 10 · Supporting Information · Figure S11d-f

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
CV b value peak A1	0.878 read from Figure S11e label	—	figure label read	Figure Axis Approximate	10 · Supporting Information · Figure S11e
CV b value peak A2	0.928 read from Figure S11e label	—	figure label read	Figure Axis Approximate	10 · Supporting Information · Figure S11e
Surface-controlled capacity contribution at 2.0 mV s^-1Marked as a best value within this paper	89.4%	—	—	Text Exact Reported	3081 · Results and Discussion · Figure 2g; Figure S11f

Cyclic voltammetry

Voltammetry

Ni-BTA-H composite cathode nanosheet · Electrode

0.3-1.6 V vs Zn2+/Zn at 0.1 mV s^-1 in 2.5 M ZnSO4 aqueous electrolyte.

Geometry: CR2032 zinc-ion coin cell with zinc foil anode
Context: composite cathode
Measurement source: 3080 · Results and Discussion · Figure 2b

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Ni-BTA-H anodic peak	approximately 0.96 V vs Zn2+/Zn	—	—	Text Approximate	3080 · Results and Discussion · Figure 2b
Ni-BTA-H cathodic peak	approximately 0.73 V vs Zn2+/Zn	—	—	Text Approximate	3080 · Results and Discussion · Figure 2b

Galvanostatic cycling

Cu-BTA-H composite cathode nanosheet · Electrode

Long cycling at 2.0 A g^-1 for 500 cycles in aqueous zinc-ion cells.

Geometry: CR2032 coin cell
Context: composite cathode comparison
Measurement source: 3080-3081 · Results and Discussion · Figure 2e

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Coulombic efficiency during cycling	approximately 100%	—	approximately	Text Approximate	3077 · Abstract · Figure 2e
Capacity after 500 cycles at 2.0 A g^-1Marked as a best value within this paper	106.1 mAh g^-1	—	—	Text Exact Reported	3080 · Results and Discussion · Figure 2e
Capacity retention after 500 cycles	68.5%	—	—	Text Exact Reported	3081 · Results and Discussion · Figure 2e
Capacity after 500 cycles at 2.0 A g^-1	77 mAh g^-1	—	—	Text Exact Reported	3080 · Results and Discussion · Figure 2e
Capacity retention after 500 cycles	51.2%	—	—	Text Exact Reported	3081 · Results and Discussion · Figure 2e
Capacity after 500 cycles at 2.0 A g^-1	78 mAh g^-1	—	—	Text Exact Reported	3080 · Results and Discussion · Figure 2e
Capacity retention after 500 cyclesMarked as a best value within this paper	84.5%	—	—	Text Exact Reported	3081 · Results and Discussion · Figure 2e

Electrochemical impedance spectroscopy

Impedance spectroscopy

Cu-BTA-H composite cathode nanosheet · Electrode

EIS after 5th cycle at 200 mA g^-1; frequency range reported as 0.1 to 10^5 Hz in main text and 100 kHz to 0.01 Hz with 5 mV AC in SI.

Geometry: CR2032 coin cell cathode
Context: composite cathode
Measurement source: 16 · Supporting Information · Table S1

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Charge-transfer resistance Rct	118 ohm	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1
Ohmic resistance Ro	5.68 ohm	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1
Warburg element Wo-RMarked as a best value within this paper	500 ohm	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1

Electrochemical impedance spectroscopy

Impedance spectroscopy

Cu-BTA-L composite cathode nanosheet · Electrode

EIS after 5th cycle at 200 mA g^-1; fitted equivalent-circuit parameters from Table S1.

Geometry: CR2032 coin cell cathode
Context: composite cathode
Measurement source: 16 · Supporting Information · Table S1

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Charge-transfer resistance Rct	170 ohm	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1
Warburg element Wo-R	739 ohm	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1

Electrochemical impedance spectroscopy

Impedance spectroscopy

Ni-BTA-H composite cathode nanosheet · Electrode

EIS after 5th cycle at 200 mA g^-1; fitted equivalent-circuit parameters from Table S1.

Geometry: CR2032 coin cell cathode
Context: composite cathode
Measurement source: 16 · Supporting Information · Table S1

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Charge-transfer resistance RctMarked as a best value within this paper	81 ohm	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1
Warburg element Wo-R	560 ohm	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1

Galvanostatic intermittent titration technique

Galvanostatic cycling

Cu-BTA-H composite cathode nanosheet · Electrode

Pulse current 0.025 A g^-1 for 10 min at 1 h rest intervals; Zn2+ diffusion coefficients compared for Cu-BTA-H/L and Ni-BTA-H.

Geometry: CR2032 coin cell cathode
Context: composite cathode comparison
Measurement source: 3081 · Results and Discussion; Electrochemical Measurement · Figure S10

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Zn2+ diffusion coefficient order of magnitudeMarked as a best value within this paper	approximately 10^-10 cm2 s^-1	—	order of magnitude	Text Approximate	3081 · Results and Discussion · Figure S10
Zn2+ diffusion coefficient order of magnitude	10^-11 cm2 s^-1	—	order of magnitude	Text Approximate	3081 · Results and Discussion · Figure S10
Zn2+ diffusion coefficient order of magnitudeMarked as a best value within this paper	approximately 10^-10 cm2 s^-1	—	order of magnitude	Text Approximate	3081 · Results and Discussion · Figure S10

Galvanostatic charge-discharge rate performance

Galvanostatic cycling

Cu-BTA-H composite cathode nanosheet · Electrode

0.3-1.6 V in 2.5 M ZnSO4 with zinc foil anode; current densities 0.2-5.0 A g^-1.

Geometry: CR2032 coin cell
Context: composite cathode
Measurement source: 3080 · Results and Discussion · Figure 2c,d; Figure S8b

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Reversible capacity at 0.2 A g^-1Marked as a best value within this paper	330 mAh g^-1	—	—	Text Exact Reported	3080 · Results and Discussion · Figure 2d
Reversible capacity at 0.5 A g^-1	200 mAh g^-1	—	—	Text Exact Reported	3080 · Results and Discussion · Figure 2d
Reversible capacity at 1.0 A g^-1	180 mAh g^-1	—	—	Text Exact Reported	3080 · Results and Discussion · Figure 2d
Reversible capacity at 2.0 A g^-1	160 mAh g^-1	—	—	Text Exact Reported	3080 · Results and Discussion · Figure 2d
Reversible capacity at 5.0 A g^-1	125 mAh g^-1	—	—	Text Exact Reported	3080 · Results and Discussion · Figure 2d

Galvanostatic charge-discharge rate performance

Galvanostatic cycling

Cu-BTA-L composite cathode nanosheet · Electrode

0.3-1.6 V in 2.5 M ZnSO4 with zinc foil anode; current densities 0.2-5.0 A g^-1.

Geometry: CR2032 coin cell
Context: composite cathode
Measurement source: 7 · Supporting Information · Figure S8c

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Reversible capacity at 0.2 A g^-1	approximately 255 mAh g^-1 read from Figure 2d/S8c	—	visual estimate	Figure Axis Approximate	3080 · Results and Discussion · Figure 2d
Reversible capacity at 2.0 A g^-1	approximately 110 mAh g^-1 read from Figure 2d/S8c	—	visual estimate	Figure Axis Approximate	7 · Supporting Information · Figure S8c

Galvanostatic charge-discharge rate performance

Galvanostatic cycling

Ni-BTA-H composite cathode nanosheet · Electrode

0.3-1.6 V in 2.5 M ZnSO4 with zinc foil anode; current densities 0.2-5.0 A g^-1.

Geometry: CR2032 coin cell
Context: composite cathode
Measurement source: 3080 · Results and Discussion · Figure 2d; Figure S8d

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Reversible capacity at 0.2 A g^-1	200 mAh g^-1	—	—	Text Exact Reported	3080 · Results and Discussion · Figure 2d
Reversible capacity at 0.5 A g^-1	120 mAh g^-1	—	—	Text Exact Reported	3080 · Results and Discussion · Figure 2d
Reversible capacity at 1.0 A g^-1	105 mAh g^-1	—	—	Text Exact Reported	3080 · Results and Discussion · Figure 2d
Reversible capacity at 2.0 A g^-1	95 mAh g^-1	—	—	Text Exact Reported	3080 · Results and Discussion · Figure 2d
Reversible capacity at 5.0 A g^-1	80 mAh g^-1	—	—	Text Exact Reported	3080 · Results and Discussion · Figure 2d

Self-charging/rest and secondary discharge tests

Cu-BTA-H composite cathode nanosheet · Electrode

Discharged Cu-BTA-H cells rested in coin-cell and open-cell configurations; voltage recovery and secondary discharge capacity measured.

Atmosphere: coin cell or open cell with sufficient O2 supply
Geometry: aqueous zinc-ion coin/open cell
Context: composite cathode
Measurement source: 3083-3084 · Results and Discussion · Figure 5

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Secondary discharge capacity after coin-cell self-charge	67.6 mAh g^-1	—	—	Text Exact Reported	3083 · Results and Discussion · Figure 5a,b
Coin-cell voltage after self-charge rest	0.86 V after 24 h rest after discharge to 0.3 V	—	—	Text Exact Reported	3083 · Results and Discussion · Figure 5a,b
Secondary discharge capacity after 24 h open-cell oxidationMarked as a best value within this paper	150.5 mAh g^-1	—	—	Text Exact Reported	3084 · Results and Discussion · Figure 5d,e
Open-cell voltage after oxidation rest	1.10 V after 24 h	—	—	Text Exact Reported	3084 · Results and Discussion · Figure 5c
Open-cell voltage after oxidation rest	0.89 V after 2 h	—	—	Text Exact Reported	3084 · Results and Discussion · Figure 5c
Recovered capacity ratio after 24 h open-cell oxidationMarked as a best value within this paper	75% of 199.8 mAh g^-1 at 0.5 A g^-1	—	—	Text Exact Reported	3084 · Results and Discussion · Figure 5e

Self-discharge/rest after charging

Cu-BTA-H composite cathode nanosheet · Electrode

Cu-BTA-H and Ni-BTA-H cathodes charged to 1.6 V and rested for 24 h in coin cells; subsequent discharge tested at 500 mA g^-1.

Atmosphere: coin cell
Geometry: aqueous zinc-ion coin cell
Context: composite cathode comparison
Measurement source: 15 · Supporting Information · Figure S18

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Voltage after 24 h rest from charged state	approximately 1.10 V	—	—	Caption Approximate	3083 · Results and Discussion · Figure S18