Diffraction Structure — Composition-dependent electrocatalytic activities of NiFe-based selenides for the oxygen evolution reaction

8 measurement groups · 8 results

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

Powder XRD

X-ray diffraction and scattering

Ni-Fe-O · Powder

Phase identification of no-Se oxide control.

Context: oxide control
Measurement source: p004 · Results and discussion · Fig. 2b

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Ni-Fe-O phase	NiFe2O4, JCPDS 74-2081	—	—	Text Qualitative	p004 · Results and discussion · Fig. 2b

Powder XRD

X-ray diffraction and scattering

NiFe-PBA · Powder

XRD scan rate 10° min-1; phase identification of NiFe-PBA.

Context: pristine precursor
Measurement source: p002 · Material characterization

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
NiFe-PBA phase	Ni3[Fe(CN)6]2·10H2O, face-centred cubic, JCPDS 46-0906; no other peaks	—	—	Text Qualitative	p003 · Results and discussion · Fig. 2a

Powder XRD and FT-IR

Infrared spectroscopy X-ray diffraction and scattering

Ni-Fe-Se1:3-180 · Powder

NiFe-PBA:Se mass-ratio variant 1:3; detailed plots in rendered SI.

Context: mass-ratio variant
Measurement source: p004 · Results and discussion · Fig. S2b/S3b (SI cited)

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Ni-Fe-Se1:3-180 structural outcome	NiSe2 and FeSe2 phases at Se-rich ratio	—	—	Text Qualitative	p004 · Results and discussion · Fig. S2b/S3b (SI cited)

Powder XRD and FT-IR

Infrared spectroscopy X-ray diffraction and scattering

Ni-Fe-Se3:1-180 · Powder

NiFe-PBA:Se mass-ratio variant 3:1; detailed plots in rendered SI.

Context: mass-ratio variant
Measurement source: p004 · Results and discussion · Fig. S2b/S3b (SI cited)

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Ni-Fe-Se3:1-180 structural outcome	NiSe diffraction plus residual NiFe-PBA peaks; incomplete transformation	—	—	Text Qualitative	p004 · Results and discussion · Fig. S2b/S3b (SI cited)

Powder XRD

X-ray diffraction and scattering

Ni-Fe-Se1:1-180 · Powder

Phase identification after selenization.

Context: target selenide
Measurement source: p003 · Results and discussion · Fig. 2b

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Ni-Fe-Se1:1-180 phase compositionMarked as a best value within this paper	NiSe2 major phase with small fraction of NiFe2Se4	—	—	Text Qualitative	p003 · Results and discussion · Fig. 2b

Powder XRD and FT-IR

Infrared spectroscopy X-ray diffraction and scattering

Ni-Fe-Se1:1-140 · Powder

Temperature-variant structural comparison at 140 °C; detailed plots in rendered SI.

Context: temperature variant
Measurement source: p004 · Results and discussion · Fig. S2a/S3a (SI cited)

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Ni-Fe-Se1:1-140 structural outcome	weak Ni3[Fe(CN)6]·10H2O and residual CN peaks; incomplete decomposition	—	—	Text Qualitative	p004 · Results and discussion · Fig. S2a/S3a (SI cited)

Powder XRD and FT-IR

Infrared spectroscopy X-ray diffraction and scattering

Ni-Fe-Se1:1-160 · Powder

Temperature-variant structural comparison at 160 °C; detailed plots in rendered SI.

Context: temperature variant
Measurement source: p004 · Results and discussion · Fig. S2a/S3a (SI cited)

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Ni-Fe-Se1:1-160 structural outcome	weak Ni3[Fe(CN)6]·10H2O and residual CN peaks; incomplete decomposition	—	—	Text Qualitative	p004 · Results and discussion · Fig. S2a/S3a (SI cited)

Powder XRD and FT-IR

Infrared spectroscopy X-ray diffraction and scattering

Ni-Fe-Se1:1-200 · Powder

Temperature-variant structural comparison at 200 °C; detailed plots in rendered SI.

Context: temperature variant
Measurement source: p004 · Results and discussion · Fig. S2a/S3a (SI cited)

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
Ni-Fe-Se1:1-200 structural outcome	no impurity peaks in main-text summary; high purity and stronger NiFe2Se4 features	—	—	Text Qualitative	p004 · Results and discussion · Fig. S2a/S3a (SI cited)