Microscopy Morphology — Carbon quantum dot-mediated binary metal-organic framework nanosheets for efficient oxygen evolution at ampere-level current densities in proton exchange membrane electrolyzers

Measurement evidence

Microscopy Morphology

Carbon quantum dot-mediated binary metal-organic framework nanosheets for efficient oxygen evolution at ampere-level current densities in proton exchange membrane electrolyzers · Ni Q., Zhang S., Wang K. et al. · Journal of Materials Chemistry A · 2024 · 31253-31261

2 measurement groups · 7 results

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

TEM and AFM

Transmission electron microscopy Atomic force microscopy

CQDs · Powder

Morphology of CQDs by TEM and AFM.

Context: composite component
Measurement source: 31255-31256 · Results and discussion · Figure 2a,b

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
CQD AFM height range	2 to 6 nm	—	range 2-6 nm	Text Range	31255 · Results and discussion · Figure 2b
CQD lateral size	about 3.07 nm	—	—	Text Approximate	31255 · Results and discussion · Figure 2a

TEM, HRTEM, AFM and EDS mapping

Transmission electron microscopy Atomic force microscopy Elemental microanalysis and mapping

NiFe-MOF-CQD · Nanosheet

Morphology and elemental mapping of NiFe-MOF and NiFe-MOF-CQD nanosheets.

Context: target composite compared with pristine NiFe-MOF
Measurement source: 31255-31256 · Results and discussion · Figure 2; Figure S3

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
NiFe-MOF-CQD EDS element distribution	uniform C, O, Ni and Fe with trace N, F, S and Na	—	—	Text Qualitative	31255 · Results and discussion · Figure 2g
NiFe-MOF-CQD HRTEM lattice spacing	0.21 nm	—	—	Text Exact Reported	31255 · Results and discussion · Figure 2e
NiFe-MOF HRTEM lattice spacing	0.24 nm	—	—	Text Exact Reported	31255 · Results and discussion · Figure S3
NiFe-MOF-CQD AFM thicknessMarked as a best value within this paper	approximately 10 nm	—	—	Text Approximate	31255 · Results and discussion · Figure 2f
NiFe-MOF AFM thickness	about 150 nm	—	—	Text Approximate	31255 · Results and discussion · Figure 2d