Electrochemistry Application — Iron-Based 2D Conductive Metal-Organic Framework Nanostructure with Enhanced Pseudocapacitance

6 measurement groups · 15 results

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

Electrochemical surface area from double-layer capacitance

Cu-HHTP composite working electrode · Electrode

CV in acetonitrile with 0.1 M TBAPF6 at scan rates 1-10 and 200-600 mV s-1; Cdl from ic = v x Cdl.

Geometry: MOF/Super P/PTFE drop-cast glassy-carbon electrode
Context: composite electrode with pristine Cu-HHTP MOF component
Measurement source: SI p.S11 · Electrochemical Data · Table S2; Figure S15

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
gravimetric capacitance	2.9 F/g	—	—	SI Table Exact Reported	SI p.S11 · Electrochemical Data · Table S2
electrochemical surface area / double-layer capacitance proxy	2.0 mF/cm2	—	—	SI Table Exact Reported	SI p.S11 · Electrochemical Data · Table S2

Electrochemical surface area from double-layer capacitance

Fe-HHTP composite working electrode · Electrode

CV in acetonitrile with 0.1 M TBAPF6 at scan rates 1-10 and 200-600 mV s-1; Cdl from ic = v x Cdl.

Geometry: MOF/Super P/PTFE drop-cast glassy-carbon electrode
Context: composite electrode with pristine Fe-HHTP MOF component
Measurement source: SI p.S3 · Electrochemical performance · Figure 6b,c; Figure S15; Table S2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
reported Cu-HHTP BET surface area comparison	540 m2 g-1	—	—	Text Rounded Reported	main p.5 · Results and Discussion
gravimetric capacitanceMarked as a best value within this paper	14.0 F/g	—	—	SI Table Exact Reported	SI p.S11 · Electrochemical Data · Table S2
Fe-HHTP capacitance enhancement over Cu/Ni-HHTP	around 5 times higher capacitance	—	—	Text Approximate	main p.5 · Results and Discussion · Table S2
electrochemical surface area / double-layer capacitance proxyMarked as a best value within this paper	3.3 mF/cm2	—	—	SI Table Exact Reported	SI p.S11 · Electrochemical Data · Table S2
reported Ni-HHTP BET surface area comparison	430 m2 g-1	—	—	Text Rounded Reported	main p.5 · Results and Discussion

Cyclic voltammetry of HHTP ligand and iron acetate controls

Voltammetry

HHTP ligand electrochemical control · Unknown

Acetonitrile with 0.1 M TBAPF6; scan rate 100 mV s-1.

Context: molecular controls for assigning ligand and metal redox features
Measurement source: SI p.S11 · Electrochemical Data · Figure S14

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
iron acetate minor potential	-0.48 V	—	—	Text Exact Reported	main p.5 · Results and Discussion · Figure S14

Cyclic voltammetry

Voltammetry

Fe-HHTP composite working electrode · Electrode

Three-electrode system in acetonitrile with 0.1 M TBAPF6; Ag/Ag+ reference, Pt counter, glassy carbon working electrode; scan rate 100 mV s-1; potential range -2 to 2 V for comparative CV.

Geometry: MOF/Super P/PTFE drop-cast glassy-carbon electrode
Context: composite electrode with pristine Fe-HHTP MOF component; Cu-HHTP and Ni-HHTP comparison electrodes measured similarly
Measurement source: main p.5 · Results and Discussion · Figure 6a

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
common ligand-like reduction potential	-1.1 V	—	—	Text Rounded Reported	main p.5 · Results and Discussion · Figure 6a; Figure S14
Fe-HHTP Fe3+/Fe2+ redox potential lower feature	0.15 V	—	—	Text Exact Reported	main p.5 · Results and Discussion · Figure 6a
Fe-HHTP Fe3+/Fe2+ redox potential upper feature	0.32 V	—	—	Text Exact Reported	main p.5 · Results and Discussion · Figure 6a

Electrochemical impedance spectroscopy

Impedance spectroscopy

Fe-HHTP composite working electrode · Electrode

Frequencies from 10 mHz to 100 kHz, 0 V versus reference electrode, 10 mV amplitude; comparison of Fe-HHTP, Ni-HHTP and Cu-HHTP electrodes.

Geometry: MOF/Super P/PTFE drop-cast glassy-carbon electrodes
Context: composite electrodes with pristine MOF components
Measurement source: main p.5-SI p.S3 · Results and Discussion; Electrochemical performance · Figure 6d

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
high-frequency charge-transport resistance order	Cu-HHTP < Ni-HHTP < Fe-HHTP	—	—	Text Qualitative	main p.5 · Results and Discussion · Figure 6d
mid-frequency diffusion resistance order	Fe-HHTP > Ni-HHTP > Cu-HHTP	—	—	Text Qualitative	main p.6 · Results and Discussion · Figure 6d

Electrochemical surface area from double-layer capacitance

Ni-HHTP composite working electrode · Electrode

CV in acetonitrile with 0.1 M TBAPF6 at scan rates 1-10 and 200-600 mV s-1; Cdl from ic = v x Cdl.

Geometry: MOF/Super P/PTFE drop-cast glassy-carbon electrode
Context: composite electrode with pristine Ni-HHTP MOF component
Measurement source: SI p.S11 · Electrochemical Data · Table S2; Figure S15

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
gravimetric capacitance	2.1 F/g	—	—	SI Table Exact Reported	SI p.S11 · Electrochemical Data · Table S2
electrochemical surface area / double-layer capacitance proxy	2.4 mF/cm2	—	—	SI Table Exact Reported	SI p.S11 · Electrochemical Data · Table S2