Spectroscopy — A 2D copper-imidazolate framework without thermal treatment as an efficient ORR electrocatalyst for Zn-air batteries

3 measurement groups · 15 results

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

as-synthesised 2DCIF nanosheet powder · Nanosheet

Single-sheet EDX-STEM analysis of pristine nanosheets

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
EDX-STEM C atomic percentage	C 57.6 ± 5.9 atomic %	—	± 5.9	SI Table Exact Reported	8 · III.2 HAADF-STEM · Table S1
EDX-STEM Cu atomic percentage	Cu 6.1 ± 1.1 atomic %	—	± 1.1	SI Table Exact Reported	8 · III.2 HAADF-STEM · Table S1
EDX-STEM N atomic percentage	N 25.6 ± 5.8 atomic %	—	± 5.8	SI Table Exact Reported	8 · III.2 HAADF-STEM · Table S1
EDX-STEM O atomic percentage	O 10.7 ± 2.4 atomic %	—	± 2.4	SI Table Exact Reported	8 · III.2 HAADF-STEM · Table S1

as-synthesised 2DCIF nanosheet powder · Nanosheet

400-4000 cm-1 at 4 cm-1 resolution

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
FTIR aldehyde C=O band	1645 cm-1	—	—	Text Exact Reported	24592 · Results and discussion · Fig. 2C inset
CTAB removal by FTIR	absence of CTAB-related peaks in 2DCIF FTIR spectrum	—	—	Text Qualitative	12 · III.5 FTIR · Fig. S13
FTIR Cu-N band	around 695 cm-1	—	around	Text Approximate	24592 · Results and discussion · Fig. 2C inset

as-synthesised 2DCIF nanosheet powder · Nanosheet

As-synthesised 2DCIFs under optimised 1:2 CuCl2/ICA conditions and precursor-ratio variants

Atmosphere: vacuum
Geometry: powder/sample surface
Context: pristine 2DCIF framework
Measurement source: 14-16 · III.8 X-ray Photoelectron Spectroscopy (XPS) · Fig. S16-S18; Table S4

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
XPS Cu atomic percentage for 1:2 CuCl2/ICA sample	Cu 5.1 atomic %	—	—	SI Table Exact Reported	16 · III.8 XPS · Table S4
XPS N atomic percentage for 1:2 CuCl2/ICA sample	N 26.7 atomic %	—	—	SI Table Exact Reported	16 · III.8 XPS · Table S4
XPS O atomic percentage for 1:2 CuCl2/ICA sample	O 13.1 atomic %	—	—	SI Table Exact Reported	16 · III.8 XPS · Table S4
Cu 2p3/2 binding energy	934.3 eV	—	—	Text Exact Reported	24593 · Results and discussion · Fig. 2D
N 1s imidazole binding energy	398.5 eV	—	—	Text Exact Reported	24593 · Results and discussion · Fig. 2D
XPS N/Cu ratio for 1:2 CuCl2/ICA sample	N/Cu 5.2	—	—	SI Table Exact Reported	16 · III.8 XPS · Table S4
O 1s Cu-O binding energy	530.9 eV	—	—	Text Exact Reported	24593 · Results and discussion · Fig. 2D
XPS O/Cu ratio for 1:2 CuCl2/ICA sample	O/Cu 2.5	—	—	SI Table Exact Reported	16 · III.8 XPS · Table S4