Spectroscopy — Structure–Property Engineering of Redox-Active Tetrathiafulvalene- and Bipyridine-Based Metal–Organic Frameworks for Battery Cathodes

Measurement evidence

Spectroscopy

Structure–Property Engineering of Redox-Active Tetrathiafulvalene- and Bipyridine-Based Metal–Organic Frameworks for Battery Cathodes · Wakamatsu K., Oshima H., Kobayashi N. et al. · Chemistry - A European Journal · 2026

4 measurement groups · 6 results

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

FT-IR

TTF-hybrid-MOF powder/crystals · Powder

Shimadzu IRAffinity-1S, 599.8618-4000.364 cm^-1, RT

Context
pristine MOF and controls
Measurement source
10 · 4.2.2 · Figure S4
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
C-N stretching band~1250 cm^-1 for TTF-hybrid-MOF and 1,2-bis(4-pyridyl)ethaneText
Approximate
S4 · Figure S4
S-C stretching band~1020 cm^-1Text
Approximate
S4 · Figure S4

Cd K-edge XAFS/XANES

TTF-hybrid-MOF cathode · Electrode

BL14B2 SPring-8; transmission mode; BN-diluted pellets; Athena normalization

Geometry
pellet/electrode state spectroscopy
Context
MOF cathodes
Measurement source
12 · 4.2.15 · Figure S22
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
Cd redox participationlittle Cd K-edge shift; Cd centres undergo negligible redox reactionsText
Qualitative
9 · Figure S22

S K-edge XAFS/XAS

TTF-hybrid-MOF cathode · Electrode

BL27SU SPring-8; 2450-2550 eV; PFY/TEY; vacuum about 10 Pa; pristine/charged/discharged states

Atmosphere
vacuum
Geometry
electrode state spectroscopy
Context
MOF cathodes
Measurement source
12 · 4.2.14 · Figure S21
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
initial S K-edge featuredominant peak at ~2473 eVText
Approximate
9 · Figure S21
oxidised sulfur XAS featuresnew features at ~2477 and ~2482 eV on chargeText
Approximate
9 · Figure S21

XPS of CEI/SEI

TTF-hybrid-MOF cathode · Electrode

JPS 9010MC; non-monochromatic Mg Kalpha, 1253 eV; pristine, first charged to 4.2 V, and discharged to 1.0 V

Geometry
electrode surface
Context
MOF cathodes
Measurement source
12 · 4.2.16 · Figure S24
PropertyReported valueNormalised valueUncertaintyOrigin and qualitySource
interphase layer formationC 1s high-binding-energy components around ~290 eV increase after electrochemical cyclingText
Approximate
9 · Figure S24