Spectroscopy — Revealing the effect of cobalt content and ligand exchange in the bimetallic Ni–Co MOF for stable supercapacitors with high energy density

Measurement evidence

Spectroscopy

Revealing the effect of cobalt content and ligand exchange in the bimetallic Ni–Co MOF for stable supercapacitors with high energy density · Raissa, Wulan Septiani N.L., Wustoni S. et al. · Journal of Power Sources · 2024 · 234423

5 measurement groups · 17 results

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

X-band electron paramagnetic resonance

Ni-M/NiCo-M/Co-M powder comparison series · Powder

Around 9 GHz, Bruker EMX PLUS EPR with ER 4122 SHQ resonator

Context
pristine MOF powder series
Measurement source
p006 · 3.1 · Fig. 2c
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
NiCo-M (10:1) EPR intensityMarked as a best value within this papermost pronounced intensityText
Qualitative
p006 · 3.1 · Fig. 2c

FTIR and Raman spectroscopy

KNiCoPO4 powder · Powder

FTIR 400-2000 cm^-1; Raman used to confirm phosphate vibrations and BTC replacement

Context
MOF-derived phosphate powder
Measurement source
p008 · 3.3 · Fig. 5b-c
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
KNiCoPO4 FTIR asymmetric P-O band1024 cm-1Text
Rounded Reported
p008 · 3.3 · Fig. 5b
KNiCoPO4 FTIR symmetric P-O band915 cm-1Text
Rounded Reported
p008 · 3.3 · Fig. 5b
KNiCoPO4 Raman symmetric P-O band930 cm-1Text
Rounded Reported
p008 · 3.3 · Fig. 5c

ATR-FTIR and Raman spectroscopy

Ni-M/NiCo-M/Co-M powder comparison series · Powder

ATR-FTIR on JASCO FT/IR-6800; Raman with 532 nm Renishaw inVia confocal microscope

Context
pristine MOF powder series
Measurement source
p003 · 2.3 · Fig. 1d-e
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
MOF FTIR asymmetric COO bandaround 1600 cm-1aroundText
Approximate
p005 · 3.1 · Fig. 1d
MOF FTIR symmetric COO bandaround 1400 cm-1aroundText
Approximate
p005 · 3.1 · Fig. 1d
MOF Raman COO bandsapproximately 1470 and 1550 cm-1approximatelyText
Approximate
p005 · 3.1 · Fig. 1e

XPS and HR-XPS

KNiCoPO4 powder · Powder

Survey and high-resolution Ni 2p, Co 2p, P 2p, O 1s spectra

Context
MOF-derived phosphate powder
Measurement source
p009 · 3.3 · Fig. 5e-f; Fig. S8
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
KNiCoPO4 Co2+/Co3+ ratio0.5Text
Rounded Reported
p009 · 3.3 · Fig. 5f; Table S4
KNiCoPO4 Ni3+/Ni2+ ratio0.9Text
Rounded Reported
p009 · 3.3 · Fig. 5e; Table S4
KNiCoPO4 XPS Ni/Co ratioapproximately 11approximatelyText
Approximate
p008 · 3.3 · Fig. S8b
KNiCoPO4 Ni 2p and Co 2p XPS fitting parameters tableNi2+ 2p3/2 855.642 eV area 11691.110; Ni3+ 2p3/2 856.952 eV area 10697.740; residual metallic Co 775.426 eV area 9770.768; Co3+ 2p3/2 780.678 eV area 2554.531; Co2+ 2p3/2 782.396 eV area 1286.689.SI Table
Exact Reported
p011 · Supplementary Information · Table S4

X-ray photoelectron spectroscopy

Ni-M/NiCo-M/Co-M powder comparison series · Powder

Kratos Axis Supra with monochromatic Al-Kalpha source, hnu = 1486.6 eV

Context
pristine MOF powder series
Measurement source
p003 · 2.3 · Fig. 2; Fig. S3; Table S2
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
NiCo-M (10:1) Co2+/Co3+ ratioMarked as a best value within this paper1.08Text
Rounded Reported
p006 · 3.1 · Fig. S3d
NiCo-M (10:1) Ni3+/Ni2+ ratio0.71Text
Rounded Reported
p006 · 3.1 · Fig. S3d
NiCo-M (10:1) XPS Ni/Co atomic ratio11.3:1aroundText
Approximate
p005 · 3.1 · Fig. S3a
NiCo-M (1:10) XPS Ni/Co atomic ratio1:9.5aroundText
Approximate
p005 · 3.1 · Fig. S3a
NiCo-M (1:1) XPS Ni/Co atomic ratio1.36:1aroundText
Approximate
p005 · 3.1 · Fig. S3a
MOF series Ni 2p and Co 2p XPS fitting parameters tableTable S2 reports binding energy, area, and FWHM for Ni2+/Ni3+ and Co2+/Co3+ spin-orbit components across Ni-M, NiCo-M (10:1), NiCo-M (1:1), NiCo-M (1:10), and Co-M.SI Table
Exact Reported
p005-p006 · Supplementary Information · Table S2