Electrochemistry Application — The Different Roles of Cobalt and Manganese in Metal-Organic Frameworks for Supercapacitors

9 measurement groups · 21 results

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

Cyclic voltammetry in symmetric 2032 coin-cell supercapacitor

Voltammetry

Mn-MOF-NC electrode · Electrode

Two-electrode symmetric SC using 1 mol L-1 LiTFSI in 1,3-dioxolane/dimethoxyethane; potential window 0-2.25 V; room temperature 25 degrees C.

Temperature: 298
Geometry: symmetric coin-cell supercapacitor
Context: no-conductive-additive electrode composite
Measurement source: p005-p006 · Results and Discussion · Figure 5a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Anodic CV peak potential	0.66 V	—	—	Text Exact Reported	p005 · Results and Discussion · Figure 5a
Cathodic CV peak potential	approximately 1.23 V	—	approximately	Text Approximate	p005 · Results and Discussion · Figure 5a

Cyclic voltammetry in symmetric 2032 coin-cell supercapacitor

Voltammetry

Co-MOF-NC electrode · Electrode

Two-electrode symmetric SC using 1 mol L-1 LiTFSI in 1,3-dioxolane/dimethoxyethane; potential window 0-2.25 V; room temperature 25 degrees C.

Temperature: 298
Geometry: symmetric coin-cell supercapacitor
Context: no-conductive-additive electrode composite
Measurement source: p005-p006 · Results and Discussion · Figure 5a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Anodic CV peak potential	0.63 V	—	—	Text Exact Reported	p005 · Results and Discussion · Figure 5a
Cathodic CV peak potential	approximately 1.27 V	—	approximately	Text Approximate	p005 · Results and Discussion · Figure 5a

Long-term galvanostatic cycling

Galvanostatic cycling

Co-MOF-SWCNTs electrode · Electrode

Cycling stability of MOF-based electrodes in symmetric SCs for 10000 charge-discharge cycles.

Temperature: 298
Geometry: symmetric coin-cell supercapacitor
Context: comparison across no-additive and SWCNT electrodes
Measurement source: p006-p007 · Results and Discussion · Figure 6d

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Capacity retention after 10000 cycles	greater than 85%	—	>	Text Approximate	p006 · Results and Discussion · Figure 6d
Capacity retention after 10000 cycles	85%	—	—	SI Table Exact Reported	SI p014-p015 · Section 15 · Table S2

Scan-rate-dependent CV and log(i)-log(v) b-value fitting

Voltammetry

Co-MOF-NC electrode · Electrode

CV testing over scan rates from 0.1 to 0.5 mV s-1; b calculated from i = a v^b.

Temperature: 298
Geometry: symmetric coin-cell supercapacitor
Context: no-conductive-additive electrode composite
Measurement source: p005 · Results and Discussion · Figure S10a-c

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
CV b value	0.46	—	—	Text Exact Reported	p005 · Results and Discussion · Figure S10c
CV b value	0.47	—	—	Text Exact Reported	p005 · Results and Discussion · Figure S10c

Nyquist electrochemical impedance spectroscopy

Impedance spectroscopy

Co-MOF-NC electrode · Electrode

Frequency range stated as 100 kHz to 100 MHz in main text; symmetric SCs.

Temperature: 298
Geometry: symmetric coin-cell supercapacitor
Context: no-conductive-additive electrode composite
Measurement source: p005 · Results and Discussion · Figure S10d

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Equivalent series resistance	77.3 ohm	—	—	Text Exact Reported	p005 · Results and Discussion · Figure S10d
Charge-transfer resistanceMarked as a best value within this paper	455.4 ohm	—	—	Text Exact Reported	p005 · Results and Discussion · Figure S10d
Equivalent series resistance	92.7 ohm	—	—	Text Exact Reported	p005 · Results and Discussion · Figure S10d
Charge-transfer resistance	545.9 ohm	—	—	Text Exact Reported	p005 · Results and Discussion · Figure S10d

Galvanostatic charge-discharge specific capacity with active carbon additive

Galvanostatic cycling

Co-MOF-AC electrode · Electrode

Symmetric 2032 coin-cell SC; 1 mol L-1 LiTFSI organic electrolyte; active carbon additive electrodes.

Temperature: 298
Geometry: symmetric coin-cell supercapacitor
Context: active-carbon electrode composite
Measurement source: p006 · Results and Discussion · Figures 6a,c and S12

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Specific capacity at 0.5 A g-1	122 mAh g-1	—	—	Text Rounded Reported	p006 · Results and Discussion · Figure 6a and Figure S12
Specific capacity at 0.5 A g-1	105 mAh g-1	—	—	Text Rounded Reported	p006 · Results and Discussion · Figure 6a and Figure S12

Galvanostatic charge-discharge specific capacity

Galvanostatic cycling

Co-MOF-NC electrode · Electrode

Symmetric 2032 coin-cell SC; 1 mol L-1 LiTFSI organic electrolyte; capacity calculated from discharge time by C = I delta t/(3.6 m).

Temperature: 298
Geometry: symmetric coin-cell supercapacitor
Context: no-conductive-additive electrode composite
Measurement source: p005-p006 · Results and Discussion · Figure 5b,d

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Specific capacity at 0.5 A g-1	103 mAh g-1	—	—	Text Rounded Reported	p005 · Results and Discussion · Figure 5d
Specific capacity at 50 A g-1	58 mAh g-1	—	—	Text Rounded Reported	p005 · Results and Discussion · Figure 5d

Galvanostatic charge-discharge specific capacity

Galvanostatic cycling

Mn-MOF-NC electrode · Electrode

Symmetric 2032 coin-cell SC; 1 mol L-1 LiTFSI organic electrolyte; capacity calculated from discharge time by C = I delta t/(3.6 m).

Temperature: 298
Geometry: symmetric coin-cell supercapacitor
Context: no-conductive-additive electrode composite
Measurement source: p005-p006 · Results and Discussion · Figure 5c,d

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Specific capacity at 0.5 A g-1	89 mAh g-1	—	—	Text Rounded Reported	p005 · Results and Discussion · Figure 5d
Specific capacity at 50 A g-1	42 mAh g-1	—	—	Text Rounded Reported	p005 · Results and Discussion · Figure 5d

Galvanostatic charge-discharge specific capacity and energy density with SWCNT additive

Galvanostatic cycling

Co-MOF-SWCNTs electrode · Electrode

Symmetric 2032 coin-cell SC; 1 mol L-1 LiTFSI organic electrolyte; SWCNT additive electrodes.

Temperature: 298
Geometry: symmetric coin-cell supercapacitor
Context: SWCNT electrode composite
Measurement source: p006-p007 · Results and Discussion · Figures 6a-c, S11 and Table S2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Specific capacity at 0.5 A g-1Marked as a best value within this paper	142 mAh g-1	—	—	Text Rounded Reported	p006 · Results and Discussion · Figure 6a and Table S2
Energy density at 250 W kg-1Marked as a best value within this paper	25.6 Wh kg-1	—	—	SI Table Exact Reported	SI p014-p015 · Section 15 · Table S2
Specific capacity at 0.5 A g-1	124 mAh g-1	—	—	Text Rounded Reported	p006 · Results and Discussion · Figure 6a and Figure S11