Spectroscopy — Thousand-fold increase in O2electroreduction rates with conductive MOFs

Measurement evidence

Spectroscopy

Thousand-fold increase in O2electroreduction rates with conductive MOFs · Mariano R.G., Wahab O.J., Rabinowitz J.A. et al. · ACS Central Science · 2022 · 975-982

2 measurement groups · 1 results

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

Ex-situ XPS after electrolysis

0.4 mg cm^-2 Ni3(HITP)2 GDE · Electrode

0.4 mg cm^-2 Ni3(HITP)2 GDEs with Nafion 117 on AvCarb 2230 after cathodic polarization in O2, polarization in N2, or unpolarized immersion.

Atmosphere
Ex-situ XPS.
Geometry
Catalyst material scraped from GDE using spatula.
Context
composite
Measurement source
SI p.S23 · Supplementary figures · Figure S11
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Metallic Ni formation after electrolysisNo evidence for formation of metallic Ni from reduction of framework Ni2+.Text
Qualitative
main article p.978 · Results and Discussion · Figure S11

X-ray photoelectron spectroscopy (XPS)

As-synthesised Ni3(HITP)2 powder · Powder

Pristine Ni3(HITP)2 powder pressed on copper tape; Al anode source; survey 0-1100 eV and high-resolution regions.

Atmosphere
XPS chamber pressure in 10^-10 Torr range.
Geometry
Powder on copper tape.
Context
pristine
Measurement source
SI p.S6 · X-ray photoelectron spectroscopy measurements · Figure S2
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource