Spectroscopy — Boron-doped cobalt-iron bimetal phosphides nanosheets for enhanced oxygen evolution

7 measurement groups · 55 results

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

High-resolution XPS

X-ray photoelectron spectroscopy

Co1Fe1-B-P · Nanosheet

EscaLab Xi+ XPS with C 1s at 284.80 eV as energy standard.

Measurement source: 4 · Results and discussion · Fig. 3b-f

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
B-O binding energy higher value	192.2 eV	—	—	Text Exact Reported	4 · Results and discussion · Fig. 3b-f
B-O binding energy lower value	191.0 eV	—	—	Text Exact Reported	4 · Results and discussion · Fig. 3b-f
M-B binding energy	187.4 eV	—	—	Text Exact Reported	4 · Results and discussion · Fig. 3b-f
Co-B/Co-P Co 2p3/2 binding energy	778.7 eV	—	—	Text Exact Reported	4 · Results and discussion · Fig. 3b-f
Co 2p3/2 Co-O binding energy	780.8 eV	—	—	Text Exact Reported	4 · Results and discussion · Fig. 3b-f
Co 2p1/2 Co-O binding energy	797.5 eV	—	—	Text Exact Reported	4 · Results and discussion · Fig. 3b-f
Fe2+ 2p1/2 binding energy	723.2 eV	—	—	Text Exact Reported	4 · Results and discussion · Fig. 3b-f
Fe2+ 2p3/2 binding energy	710.3 eV	—	—	Text Exact Reported	4 · Results and discussion · Fig. 3b-f
Fe3+ 2p1/2 binding energy	725.4 eV	—	—	Text Exact Reported	4 · Results and discussion · Fig. 3b-f
Fe3+ 2p3/2 binding energy	712.9 eV	—	—	Text Exact Reported	4 · Results and discussion · Fig. 3b-f
Fe-P/Fe-B binding energy	707.1 eV	—	—	Text Exact Reported	4 · Results and discussion · Fig. 3b-f
adsorbed oxygen O 1s binding energy	533.1 eV	—	—	Text Exact Reported	4 · Results and discussion · Fig. 3b-f
hydroxyl O 1s binding energy	531.8 eV	—	—	Text Exact Reported	4 · Results and discussion · Fig. 3b-f
lattice oxygen O 1s binding energy	531.0 eV	—	—	Text Exact Reported	4 · Results and discussion · Fig. 3b-f
M-P P 2p3/2 binding energy	129.3 eV	—	—	Text Exact Reported	4 · Results and discussion · Fig. 3b-f
M-P P 2p1/2 binding energy	130.0 eV	—	—	Text Exact Reported	4 · Results and discussion · Fig. 3b-f
P-O binding energy	133.7 eV	—	—	Text Exact Reported	4 · Results and discussion · Fig. 3b-f

EDX elemental analysis

Elemental microanalysis and mapping Bulk elemental and compositional analysis

Co1Fe1-MOF · Powder

EDX atomic composition of MOF precursor from SI Table S1.

Measurement source: 16 · Supporting Information · Table S1

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
C content	57.5	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1
Co content	10.4	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1
Co/Fe atomic ratio	2.89	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1
Fe content	3.6	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1
N content	18.7	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1
O content	9.7	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1

EDX elemental analysis

Elemental microanalysis and mapping Bulk elemental and compositional analysis

Co1Fe2-MOF · Powder

EDX atomic composition of MOF precursor from SI Table S1.

Measurement source: 16 · Supporting Information · Table S1

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
C content	50.0	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1
Co content	12.6	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1
Co/Fe atomic ratio	1.43	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1
Fe content	8.8	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1
N content	13.0	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1
O content	15.6	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1

EDX elemental analysis

Elemental microanalysis and mapping Bulk elemental and compositional analysis

Co2Fe1-MOF · Powder

EDX atomic composition of MOF precursor from SI Table S1.

Measurement source: 16 · Supporting Information · Table S1

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
C content	57.9	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1
Co content	11.3	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1
Co/Fe atomic ratio	4.04	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1
Fe content	2.8	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1
N content	21.0	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1
O content	7.1	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1

EDX elemental analysis

Elemental microanalysis and mapping Bulk elemental and compositional analysis

Co-MOF · Powder

EDX atomic composition of MOF precursor from SI Table S1.

Measurement source: 16 · Supporting Information · Table S1

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
C content	60.7	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1
Co content	9.2	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1
N content	24.0	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1
O content	6.1	—	—	SI Table Exact Reported	16 · Supporting Information · Table S1

EDX before and after OER

Elemental microanalysis and mapping

Co1Fe1-B-P · Nanosheet

Atomic percentages before and after OER from SI Table S3.

Measurement source: 17 · Supporting Information · Table S3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
after OER B content	0.6	—	—	SI Table Exact Reported	17 · Supporting Information · Table S3
after OER C content	22.3	—	—	SI Table Exact Reported	17 · Supporting Information · Table S3
after OER Co content	20.9	—	—	SI Table Exact Reported	17 · Supporting Information · Table S3
after OER Fe content	16.4	—	—	SI Table Exact Reported	17 · Supporting Information · Table S3
after OER N content	1.7	—	—	SI Table Exact Reported	17 · Supporting Information · Table S3
after OER O content	35.8	—	—	SI Table Exact Reported	17 · Supporting Information · Table S3
after OER P content	2.3	—	—	SI Table Exact Reported	17 · Supporting Information · Table S3
before OER B content	7.9	—	—	SI Table Exact Reported	17 · Supporting Information · Table S3
before OER C content	21.2	—	—	SI Table Exact Reported	17 · Supporting Information · Table S3
before OER Co content	14.5	—	—	SI Table Exact Reported	17 · Supporting Information · Table S3
before OER Fe content	11.7	—	—	SI Table Exact Reported	17 · Supporting Information · Table S3
before OER N content	1.9	—	—	SI Table Exact Reported	17 · Supporting Information · Table S3
before OER O content	20.7	—	—	SI Table Exact Reported	17 · Supporting Information · Table S3
before OER P content	22.1	—	—	SI Table Exact Reported	17 · Supporting Information · Table S3

Post-OER high-resolution XPS

X-ray photoelectron spectroscopy

Co1Fe1-B-P · Nanosheet

XPS spectra after prolonged OER stability test.

Measurement source: 6 · Results and discussion · Fig. S20

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
post-OER Co-O XPS change	relative intensity of Co-O peak increased and shifted to lower binding energy	—	—	Text Qualitative	6 · Results and discussion · Fig. S20
post-OER Me-P/Me-B XPS features	MeP and MeB peaks almost completely disappeared after OER	—	—	Text Qualitative	6 · Results and discussion · Fig. S20