Electrochemistry Application — Copper-Metal Organic Frameworks Electrodeposited on Carbon Paper as an Enhanced Cathode for the Hydrogen Evolution Reaction

Measurement evidence

Electrochemistry Application

Copper-Metal Organic Frameworks Electrodeposited on Carbon Paper as an Enhanced Cathode for the Hydrogen Evolution Reaction · Li X.-F., Lu M.-Y., Yu H.-Y. et al. · ChemElectroChem · 2019 · 4507-4510

7 measurement groups · 11 results

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

Cyclic voltammetry for double-layer capacitance

HKUST-1 ED on carbon paper · Electrode

CV in 0.425-0.625 V vs RHE at different scan rates; current density plotted against scan rate to estimate Cdl.

Geometry
electrode in 0.5 M H2SO4
Context
target composite electrode
Measurement source
4509 · Results · Figure 3c; Figure S6
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Double-layer capacitance CdlMarked as a best value within this paper0.26 mF cm^-2Text
Exact Reported
4509 · Results · Figure 3c

Cyclic voltammetry for double-layer capacitance

HKUST-1 HT drop-cast electrode · Electrode

CV in 0.425-0.625 V vs RHE at different scan rates; current density plotted against scan rate to estimate Cdl.

Geometry
electrode in 0.5 M H2SO4
Context
pristine MOF comparison electrode
Measurement source
4509 · Results · Figure 3c; Figure S6
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Double-layer capacitance Cdl0.19 mF cm^-2Text
Exact Reported
4509 · Results · Figure 3c

Chronoamperometric HER durability

HKUST-1 ED on carbon paper · Electrode

HER stability in acid media at fixed voltage corresponding to 10 mA cm^-2 over 12 h.

Geometry
electrode in 0.5 M H2SO4
Context
target composite electrode
Measurement source
4509 · Results · Figure 3d
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
HER durability over 12 hMarked as a best value within this paperrelative current density kept well during 12 h continuous operationText
Qualitative
4509 · Results · Figure 3d

Chronoamperometric HER durability

HKUST-1 HT drop-cast electrode · Electrode

HER stability in acid media at fixed voltage corresponding to 10 mA cm^-2 over 12 h.

Geometry
electrode in 0.5 M H2SO4
Context
pristine MOF comparison electrode
Measurement source
4509 · Results · Figure 3d
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
HER durability over 12 hdecreased to 70%Text
Exact Reported
4509 · Results · Figure 3d

HER polarisation and Tafel analysis

Pure carbon paper · Electrode

Pure carbon paper control in 0.5 M H2SO4; scan rate 1 mV s^-1 for HER polarisation.

Atmosphere
nitrogen-bubbled electrolyte
Geometry
carbon paper electrode
Context
non-MOF conductive substrate control
Measurement source
4509 · Results · Figure 3b
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Tafel slope279.3 mV dec^-1Text
Exact Reported
4509 · Results · Figure 3b

HER polarisation and Tafel analysis

HKUST-1 ED on carbon paper · Electrode

0.5 M H2SO4, scan rate 1 mV s^-1; three-electrode system; N2 bubbled for 30 min; potentials converted to RHE.

Atmosphere
nitrogen-bubbled electrolyte
Geometry
1 cm x 2 cm working electrode; loading density 0.7 mg cm^-2
Context
target composite electrode
Measurement source
4508-4509 · Results · Figure 3a,b
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
HER onset potentialMarked as a best value within this paperabout -400 mV (vs. RHE)aboutText
Approximate
4508 · Results · Figure 3a
HER overpotential at -10 mA cm^-2Marked as a best value within this paperabout -590 mV (vs. RHE) at -10 mA cm^-2aboutText
Approximate
4508 · Results · Figure 3a
Tafel slopeMarked as a best value within this paper183.6 mV dec^-1Text
Exact Reported
4509 · Results · Figure 3b

HER polarisation and Tafel analysis

HKUST-1 HT drop-cast electrode · Electrode

0.5 M H2SO4, scan rate 1 mV s^-1; three-electrode system; N2 bubbled for 30 min; potentials converted to RHE.

Atmosphere
nitrogen-bubbled electrolyte
Geometry
1 cm x 2 cm carbon paper electrode; loading density ~0.7 mg cm^-2
Context
pristine MOF comparison electrode
Measurement source
4508-4509 · Results · Figure 3a,b
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
HER onset potentialabout -490 mV (vs. RHE)aboutText
Approximate
4509 · Results · Figure 3a
HER overpotential at -10 mA cm^-2about -660 mV (vs. RHE) at -10 mA cm^-2aboutText
Approximate
4509 · Results · Figure 3a
Tafel slope222.4 mV dec^-1 in main text; 222.48 mV dec^-1 in Table S2SI Table
Exact Reported
SI p009 · Table S2 · Table S2