Spectroscopy — Engineering the modulation of the active sites and pores of pristine metal-organic frameworks for high-performance sodium-ion storage

3 measurement groups · 11 results

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

Ni-HHTP-250 electrode · Electrode

Spectra collected during first-cycle discharge/charge states to determine sodium-storage mechanism.

Geometry: post-cycling electrode
Context: composite electrode; active material framework examined after electrochemical states
Measurement source: 402 · Charge storage mechanism · Fig. 6b-d

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
ex situ FT-IR C=O peak position	1625 cm-1	—	—	Text Rounded Reported	402 · Charge storage mechanism · Fig. 6b
ex situ FT-IR C-O signal position	1250 cm-1	—	—	Text Rounded Reported	402 · Charge storage mechanism · Fig. 6b
Ni2+ Ni 2p1/2 binding energy	874.7 eV	—	—	Text Exact Reported	403 · Charge storage mechanism · Fig. 6d
Ni2+ Ni 2p3/2 binding energy	856.7 eV	—	—	Text Exact Reported	403 · Charge storage mechanism · Fig. 6d
Ni2+ satellite peak	861.9 eV	—	—	Text Exact Reported	403 · Charge storage mechanism · Fig. 6d
Ni2+ satellite peak	880.0 eV	—	—	Text Exact Reported	403 · Charge storage mechanism · Fig. 6d

pristine Ni-HHTP · Powder

Thermal treatment monitored by thermogravimetry with mass spectrometry; caption specifies nitrogen.

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
second TG-MS carbonisation-related step upper bound	550 C	—	—	Text Rounded Reported	398 · Synthesis and characterization · Fig. 2a
second TG-MS carbonisation-related step lower bound	370 C	—	—	Text Rounded Reported	398 · Synthesis and characterization · Fig. 2a
first TG-MS mass-loss step upper bound	220 C	—	—	Text Rounded Reported	398 · Synthesis and characterization · Fig. 2a
first TG-MS mass-loss step lower bound	30 C	—	—	Text Rounded Reported	398 · Synthesis and characterization · Fig. 2a

Ni-HHTP-250 · Powder

SI Fig. S1 compares pristine Ni-HHTP and Ni-HHTP-250 high-resolution Ni 2p and O 1s spectra.

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
XPS evidence for changed Ni-O/metal-organic interaction after heat treatment	Ni-O bond content in pristine Ni-HHTP is lower than that in Ni-HHTP-250	—	—	Text Qualitative	398 · Synthesis and characterization · Fig. S1