cMOF Evidence Base
Electrochemistry Application — Conjugated Copper–Catecholate Framework Electrodes for Efficient Energy Storage

Measurement evidence

Electrochemistry Application

Conjugated Copper–Catecholate Framework Electrodes for Efficient Energy Storage · Liu J., Zhou Y., Xie Z. et al. · Angewandte Chemie - International Edition · 2020 · 1081-1086

4 measurement groups · 25 results

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

CV, GCD, EIS, and cycling of 8OH-DBC ligand control

Impedance spectroscopyVoltammetryGalvanostatic cycling

8OH-DBC ligand electrochemical control · Model

1 M NaCl comparison with Cu-DBC; CV at 1 mV s-1; GCD at 0.2 A g-1 and cycling at 5 A g-1.

Atmosphere
aqueous electrolyte
Geometry
Ligand control electrode; exact electrode recipe not given in extracted SI text.
Context
Non-MOF ligand model/control.
Measurement source
S15-S18 · Section 18 · Figures S19-S23
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
8OH-DBC gravimetric capacitance532 F g-1——Text
Exact Reported		S15 · Section 18 · Figure S21
8OH-DBC GCD discharge platformsTwo distinct discharge platforms at 0.152 V and -0.370 V at 0.2 A g-1.——Text
Exact Reported		S15 · Section 18 · Figure S20
8OH-DBC ligand CV redox peak pairsTwo pairs of redox peaks at -0.097/-0.304 V and 0.158/0.087 V vs SCE at 1 mV s-1.——Text
Exact Reported		S15 · Section 18 · Figure S19
8OH-DBC cycling retention73% after 2000 cycles at 5 A g-1——Text
Exact Reported		S15 · Section 18 · Figure S23

Trasatti and Dunn capacitance contribution analyses

Cu-DBC-modified glassy carbon electrode · Electrode

CV scan rates 1-100 mV s-1; gravimetric capacitances from GCD/CV equations; EDL and pseudocapacitive contributions separated.

Atmosphere
1 M NaCl aqueous electrolyte
Geometry
Cu-DBC-modified GCE.
Context
Composite electrode containing pristine Cu-DBC active framework.
Measurement source
S3 · Capacitance Contribution Calculation Methods · Figure 3
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Dunn EDL capacitance contribution at 10 mV s-1Cdl contribution close to 62% at 10 mV s-1—close toText
Approximate		1084 · Results and discussion · Figure 3c,d
Trasatti EDL capacitance contributionCdl about 62%—aboutText
Approximate		1084 · Results and discussion · Figure 3a,b
Trasatti pseudo-capacitance contributionCp about 38%—aboutText
Approximate		1084 · Results and discussion · Figure 3a,b

Symmetric solid-state cell CV, GCD, EIS, cycling, Ragone analysis

Impedance spectroscopyVoltammetryGalvanostatic cycling

Symmetric Cu-DBC solid-state supercapacitor cell · Electrode

Working potential window 0-1.0 V; two Cu-DBC film electrodes with 1 M NaCl; current densities 0.2-10 A g-1.

Atmosphere
aqueous NaCl gel/soaked separator in coin-shaped cell
Geometry
Symmetric two-electrode cell, 3 x 3 mm2 films, 40 um electrode thickness, active mass 2.22 mg cm-2.
Context
Composite free-standing Cu-DBC film electrodes.
Measurement source
1084 · Results and discussion · Figure 4; Tables S8-S10
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Solid-state areal capacitance at 0.2 A g-1Marked as a best value within this paper879 mF cm-2 at 0.2 A g-1——SI Table
Exact Reported		S20-S21 · Section 20 · Tables S8-S9
Solid-state areal capacitance rate seriesCurrent density A g-1 to mF cm-2: 0.2:879; 0.5:817; 0.7:781; 1:746; 2:690; 3:635; 4:604; 5:568; 6:551; 7:533; 8:515; 9:502; 10:488.——SI Table
Exact Reported		S20 · Section 20 · Table S8
Solid-state single-electrode gravimetric capacitance at 0.2 A g-1Marked as a best value within this paper396 F g-1; areal 879 mF cm-2; volumetric 22.0 F cm-3——SI Table
Exact Reported		S20 · Section 20 · Table S8
Solid-state gravimetric capacitance rate seriesCurrent density A g-1 to F g-1: 0.2:396; 0.5:368; 0.7:352; 1:336; 2:311; 3:286; 4:272; 5:256; 6:248; 7:240; 8:232; 9:226; 10:220.——SI Table
Exact Reported		S20 · Section 20 · Table S8
Solid-state cycling retention80% capacitance retention after 2000 cycles at 5 A g-1.——Text
Exact Reported		1085 · Results and discussion · Figure 4f
Solid-state energy density at 0.1 kW kg-1Marked as a best value within this paper13.8 Wh kg-1 at 0.1 kW kg-1——SI Table
Exact Reported		S21 · Section 20 · Table S10
Solid-state energy density at 5.01 kW kg-17.6 Wh kg-1 at 5.01 kW kg-1——SI Table
Exact Reported		S21 · Section 20 · Table S10
Solid-state energy density versus power density seriesPower density kW kg-1 to energy density Wh kg-1: 0.1:13.8; 0.25:12.7; 0.36:12.2; 0.49:11.7; 0.98:10.8; 1.49:9.9; 1.99:9.4; 2.48:8.9; 3.01:8.6; 3.52:8.3; 4.05:8.1; 4.39:7.8; 5.01:7.6.——SI Table
Exact Reported		S21-S22 · Section 20 · Table S10
LED demonstration voltageA red 2.0 V light-emitting diode was lit by three cells connected in series.——Text
Exact Reported		1085 · Results and discussion · Figure 4f inset
Solid-state equivalent Ohmic resistance1.38 ohm——Text
Exact Reported		1085 · Results and discussion · Figure 4d
Solid-state rate retention from 0.2 to 2 A g-179% capacitance retention when current density increased from 0.2 to 2 A g-1.——Text
Exact Reported		1084 · Results and discussion · Figure S25; Table S8
Solid-state volumetric capacitance at 0.2 A g-1Marked as a best value within this paper22.0 F cm-3 at 0.2 A g-1——SI Table
Exact Reported		S20 · Section 20 · Table S8
Solid-state volumetric capacitance rate seriesCurrent density A g-1 to F cm-3: 0.2:22.0; 0.5:20.4; 0.7:19.6; 1:18.6; 2:17.2; 3:15.8; 4:15.2; 5:14.2; 6:13.8; 7:13.4; 8:12.8; 9:12.6; 10:12.2.——SI Table
Exact Reported		S20 · Section 20 · Table S8

Three-electrode CV, GCD, and EIS

Impedance spectroscopyVoltammetryGalvanostatic cycling

Cu-DBC-modified glassy carbon electrode · Electrode

1 M NaCl aqueous electrolyte; SCE reference, Pt wire counter electrode; CV -0.5 to 0.2 V vs SCE at 1-100 mV s-1; GCD at 0.2-10.0 A g-1; EIS 10 mHz to 100 kHz.

Atmosphere
aqueous electrolyte
Geometry
Cu-DBC-modified GCE, 0.64 mg cm-2 Cu-DBC loading.
Context
Composite electrode containing pristine Cu-DBC active framework.
Measurement source
S4 · Standard three-electrode system measurements · Figures 2, S18; Table S7
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Three-electrode gravimetric capacitance at 0.2 A g-1Marked as a best value within this paper479 F g-1 at a discharge rate of 0.2 A g-1——Text
Exact Reported		1081, 1083 · Abstract / Results and discussion · Figure 2b
Three-electrode gravimetric capacitance at 0.5 A g-1425 F g-1 at 0.5 A g-1——SI Table
Exact Reported		S20 · Section 19 · Table S7
Cu-DBC three-electrode CV redox peaksThree reversible redox peak pairs: -0.222/-0.438 V, -0.053/-0.134 V, and 0.093/0.079 V vs SCE at 1 mV s-1.——Text
Exact Reported		S18 · Section 18 · Figure 2a; Scheme S4
Three-electrode cycling retentionAbout 72% capacitance retained after 2000 cycles at 5 A g-1.—aboutText
Approximate		1084 · Results and discussion · Figure S18b
Three-electrode rate retention from 0.2 to 2 A g-1About 64% of initial capacitance maintained when current density increased from 0.2 to 2 A g-1.—aboutText
Approximate		1084 · Results and discussion · Figure S18a