Electrochemistry Application — Conductive 2D metal-organic framework for high-performance cathodes in aqueous rechargeable zinc batteries

6 measurement groups · 30 results

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

cyclic voltammetry

Voltammetry

Zn-Cu3(HHTP)2 coin cell · Electrode

Coin-type two-electrode Zn-Cu3(HHTP)2 cell in 3.0 M aqueous Zn(CF3SO3)2; scan-rate series for charge-storage analysis.

Temperature: 298
Geometry: coin cell
Context: 60:20:20 composite cathode
Measurement source: rendered pages 3, 7, and 8 / article pp.3, 7, and 8 · Electrochemical performance; Charge-storage mechanism; Methods · Figure 6; Supplementary Figs. 3 and 14

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
b-values across operating voltage range	above 0.85	—	—	Text Approximate	rendered page 7 / article p.7 · Charge-storage mechanism · Figure 6b; Supplementary Fig. 14a
capacitive contribution to total current	83% at 0.5 mV s^-1	—	—	Text Exact Reported	rendered page 7 / article p.7 · Charge-storage mechanism · Figure 6c
Zn2+ insertion/extraction CV potential pair	approximately 0.90/1.21 V vs Zn/Zn2+	—	—	Text Approximate	rendered page 3 / article p.3 · Electrochemical performance · Supplementary Fig. 3
Zn2+ insertion/extraction CV potential pair	approximately 0.65/1.10 V vs Zn/Zn2+	—	—	Text Approximate	rendered page 3 / article p.3 · Electrochemical performance · Supplementary Fig. 3
capacity retained after self-discharge storage	83% after 5 days	—	—	Text Exact Reported	rendered page 8 / article p.8 · Charge-storage mechanism · Figure 6d inset
self-discharge rateMarked as a best value within this paper	0.003 V h^-1	—	—	Text Exact Reported	rendered page 8 / article p.8 · Charge-storage mechanism · Figure 6d

galvanostatic cycling under high active-material fraction

Galvanostatic cycling

Cu3(HHTP)2 high-active-loading cathode electrode, 90:5:5 · Electrode

Cu3(HHTP)2:acetylene black:PVDF = 90:5:5 electrode at 500 mA g^-1.

Temperature: 298
Geometry: coin cell
Context: high-loading composite cathode
Measurement source: rendered page 3 / article p.3 · Electrochemical performance · Supplementary Fig. 5

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
90 wt% active electrode initial capacity at 500 mA g^-1	125 mAh g^-1	—	—	Text Exact Reported	rendered page 3 / article p.3 · Electrochemical performance · Supplementary Fig. 5a
90 wt% active electrode retention after 100 cycles	76% of initial capacity	—	—	Text Exact Reported	rendered page 3 / article p.3 · Electrochemical performance · Supplementary Fig. 5b

electrochemical impedance spectroscopy (EIS) on symmetric cells

Impedance spectroscopy

Cu3(HHTP)2 cathode electrode, 60:20:20 · Electrode

Symmetric cells of Cu3(HHTP)2 electrodes in aqueous 3 M Zn(CF3SO3)2 or organic 0.25 M Zn(CF3SO3)2 in MeCN; 0.01 Hz-1 MHz; 10 mV input amplitude.

Temperature: 298
Geometry: symmetric cell
Context: composite electrode/electrolyte interface
Measurement source: rendered pages 3 and 8 / article pp.3 and 8 · Origin of high rate performance; Methods - Electrochemical tests · Supplementary Fig. 7

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
aqueous interfacial resistanceMarked as a best value within this paper	150 ohm cm2	—	—	Text Exact Reported	rendered page 3 / article p.3 · Origin of high rate performance · Supplementary Fig. 7
organic-electrolyte interfacial resistance	16,000 ohm cm2	—	—	Text Exact Reported	rendered page 3 / article p.3 · Origin of high rate performance · Supplementary Fig. 7
aqueous Zn2+ interfacial conductivityMarked as a best value within this paper	0.7 x 10^-2 S cm^-1	—	—	Text Exact Reported	rendered page 3 / article p.3 · Origin of high rate performance · Supplementary Fig. 7
organic-electrolyte Zn2+ interfacial conductivity	0.6 x 10^-5 S cm^-1	—	—	Text Exact Reported	rendered page 3 / article p.3 · Origin of high rate performance · Supplementary Fig. 7

galvanostatic discharge-charge and rate capability

Galvanostatic cycling

Zn-Cu3(HHTP)2 coin cell · Electrode

Two-electrode Zn-Cu3(HHTP)2 coin cells, 3 M Zn(CF3SO3)2 in water, 0.5-1.3 V vs Zn/Zn2+, 25 deg C, constant current mode.

Temperature: 298
Geometry: coin cell
Context: 60:20:20 composite cathode
Measurement source: rendered pages 3 and 8 / article pp.3 and 8 · Electrochemical performance; Methods · Figure 3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
rate capacity at 100 mA g^-1	191.4 mAh g^-1	—	—	Text Exact Reported	rendered page 3 / article p.3 · Electrochemical performance · Figure 3b
rate capacity at 200 mA g^-1	189.2 mAh g^-1	—	—	Text Exact Reported	rendered page 3 / article p.3 · Electrochemical performance · Figure 3b
rate capacity at 4000 mA g^-1	124.5 mAh g^-1	—	—	Text Exact Reported	rendered page 3 / article p.3 · Electrochemical performance · Figure 3b
rate capacity at 500 mA g^-1	152.4 mAh g^-1	—	—	Text Exact Reported	rendered page 3 / article p.3 · Electrochemical performance · Figure 3b
capacity maintained after 500 cycles at 4000 mA g^-1	124.4 mAh g^-1 after 500 cycles	—	—	Text Exact Reported	rendered pages 1 and 3 / article pp.1 and 3 · Abstract; Electrochemical performance · Figure 3d
capacity retention after 500 cycles at 4000 mA g^-1Marked as a best value within this paper	75.0%	—	—	Text Exact Reported	rendered page 1 / article p.1 · Abstract · Figure 3d
capacity maintained after 100 cycles at 500 mA g^-1	152.5 mAh g^-1 after 100 cycles	—	—	Text Exact Reported	rendered page 3 / article p.3 · Electrochemical performance · Figure 3c
capacity retention after 100 cycles at 500 mA g^-1	75.0%	—	—	Text Exact Reported	rendered page 3 / article p.3 · Electrochemical performance · Figure 3c
initial reversible capacity at 50 mA g^-1Marked as a best value within this paper	228 mAh g^-1 at 50 mA g^-1	—	—	Text Exact Reported	rendered pages 1 and 3 / article pp.1 and 3 · Abstract; Electrochemical performance · Figure 3a
redox switching potential	1.06 V vs Zn/Zn2+	—	—	Text Exact Reported	rendered page 2 / article p.2 · Introduction
redox switching potential	0.88 V vs Zn/Zn2+	—	—	Text Exact Reported	rendered page 2 / article p.2 · Introduction
capacity retention at 4000 mA g^-1 relative to 215 mAh g^-1	57.9%	—	—	Text Exact Reported	rendered page 3 / article p.3 · Electrochemical performance · Figure 3b
second cycle capacity at 50 mA g^-1	215 mAh g^-1	—	—	Text Exact Reported	rendered page 3 / article p.3 · Electrochemical performance · Figure 3a

galvanostatic intermittent titration technique (GITT)

Galvanostatic cycling

Zn-Cu3(HHTP)2 coin cell · Electrode

First charge process between 0.5 V and 1.3 V; current density 50 mA g^-1; pulse time interval tau = 30 min.

Temperature: 298
Geometry: coin cell
Context: 60:20:20 composite cathode
Measurement source: SI p.4 and p.9 · Supplementary Fig. 6; Supplementary Note 1 · Supplementary Fig. 6

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Zn2+ diffusion coefficient in copper redox region	DZn2+ = 9.3 x 10^-12 cm2 s^-1	—	—	Figure Axis Exact Reported	rendered page 6 / response p.4 · Reviewer response, added Supplementary Fig. 4 · Added Supplementary Fig. 4 / final Supplementary Fig. 6
overall Zn2+ diffusion coefficient	3.9 x 10^-10 cm2 s^-1	—	—	Text Exact Reported	rendered page 3 / article p.3 · Origin of high rate performance · Supplementary Fig. 6
Zn2+ diffusion coefficient in main quinoid redox regionMarked as a best value within this paper	1.2 x 10^-9 cm2 s^-1	—	—	Text Exact Reported	rendered page 3 / article p.3 · Origin of high rate performance · Supplementary Fig. 6

galvanostatic discharge-charge in organic electrolyte

Galvanostatic cycling

Zn-Cu3(HHTP)2 coin cell · Electrode

0.25 M Zn(CF3SO3)2 in MeCN, 50 mA g^-1, 0.5-1.3 V vs Zn/Zn2+.

Temperature: 298
Geometry: coin cell
Context: 60:20:20 composite cathode in organic electrolyte
Measurement source: rendered page 4 / article p.4 · Origin of high rate performance · Supplementary Fig. 9

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
initial discharge capacity in organic electrolyte	144 mAh g^-1 at 50 mA g^-1	—	—	Text Exact Reported	rendered page 4 / article p.4 · Origin of high rate performance · Supplementary Fig. 9a
organic-electrolyte capacity retention	almost zero	—	—	Text Qualitative	rendered page 4 / article p.4 · Origin of high rate performance · Supplementary Fig. 9b