Spectroscopy — Linker Defects Triggering Boosted Oxygen Reduction Activity of Co/Zn-ZIF Nanosheet Arrays for Rechargeable Zn–Air batteries

Measurement evidence

Spectroscopy

Linker Defects Triggering Boosted Oxygen Reduction Activity of Co/Zn-ZIF Nanosheet Arrays for Rechargeable Zn–Air batteries · Yang F., Xie J., Liu X. et al. · Small · 2021 · 2007085

3 measurement groups · 6 results

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

Raman and FTIR

D-ZIF linker-deficient nanosheet array on Ni foam · Electrode

Raman and FTIR comparison of ZIF and D-ZIF.

Context
target sample compared with pristine control
Measurement source
3 · 2. Result and Discussion · Figure 2c,d
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
FTIR characteristic peaks of coordinated polymer424, 1381, 1564, 1147 and 1305 cm-1Text
Exact Reported
3 · 2. Result and Discussion · Figure 2d
Raman peaks weakened in D-ZIFD-ZIF Raman peaks substantially weaker than ZIF, especially at 178 and 688 cm-1Text
Qualitative
2 · 2. Result and Discussion · Figure 2c

TG and TGA-FTIR

ZIF nanosheet array on Ni foam · Electrode

TG under flowing air at 5 C min-1 from room temperature to 800 C; FTIR of thermal decomposition products near 200 C.

Atmosphere
flowing air
Context
pristine ZIF precursor to defect treatment
Measurement source
2 · 2. Result and Discussion · Figure 2b; Figure S2
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
TG mass loss by 200 C-7.27 wt% at 200 CFigure Axis
Rounded Reported
3 · 2. Result and Discussion · Figure 2b
FTIR band of volatilised imidazole product2931 cm-1 assigned to N-H groups at 200 CText
Exact Reported
2 · 2. Result and Discussion · Figure S2

Co K-edge XANES, FT-EXAFS and wavelet transform EXAFS

D-ZIF linker-deficient nanosheet array on Ni foam · Electrode

Synchrotron radiation measurements of local electronic and coordination structure for ZIF and D-ZIF.

Context
target sample compared with pristine control
Measurement source
3 · 2. Result and Discussion · Figure 3
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
WT-EXAFS Co-N maximummaximum at about 1.5 A associated with Co-N bondingText
Approximate
3 · 2. Result and Discussion · Figure 3d,e
Co valence trend from XANESD-ZIF absorption edge shifts slightly to lower energy than ZIFText
Qualitative
3 · 2. Result and Discussion · Figure 3b