Ciria-Ramos I., Neale A.R., Hardwick L.J. et al. · Dalton Transactions · 2025 · 9714-9725
Open a family to keep every result attached to its sample, method and conditions.
Paraphrased for this database from the authors’ stated interpretations — never quoted verbatim — and kept separate from reported measurements.
Pristine Fe-HHTP is a directly synthesised conductive MOF active as a Li-ion battery negative electrode without conversion to a high-temperature-derived carbon or oxide.
Caveat: The battery electrode itself is a composite with Super P and PVDF, so application metrics are not from a neat MOF-only electrode.
1 · Abstract · Linked to 3 structured results
XRD could not reveal MOF structural evolution in the electrode because the fresh Fe-HHTP composite electrode itself gave no discernible diffraction peaks.
9 · Figure S8 · Figure S8 · Linked to 1 structured result
The large capacity increase during galvanostatic cycling is attributed to a cycling-induced structural activation that improves access to inner Fe-HHTP regions.
Caveat: The authors could not track structural changes by XRD because even the fresh electrode lacked discernible peaks.
9 · 3 Conclusions · Linked to 4 structured results
Both HHTP ligands and Fe centres participate in lithium storage: ligands convert between semiquinone/catecholate states with C-Li interactions, while Fe reduces from Fe3+ to Fe2+ and partly Fe0 during lithiation.
Caveat: Fe0 formation is not fully reversible, but the delithiated 200-cycle Fe0 signal is reported as weak.
8 · 2.4 Mechanism proposal · Figures 3-6 · Linked to 4 structured results
The electrochemical response is interpreted as a pseudocapacitive multistep intercalation mechanism with sloping galvanostatic profiles and broad low-intensity CV peaks.
Caveat: Mechanistic interpretation relies on combined spectroscopy and electrochemistry; no direct crystallographic tracking of cycled structure was available.
7 · 2.3 Study of the electrochemical mechanism · Figure 6 · Linked to 3 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Fe-HHTP conductive MOFBrowse family: Fe–HHTP family | Fe-HHTP; exact formula not reportedFe cations, mixed Fe2+/Fe3+ by XPS, coordinated to HHTP oxygen sites · HHTP (2,3,6,7,10,11-hexahydroxytriphenylene) | 2D · PristineLow-crystallinity triphenylene-based layered conductive MOF; weak reflections assigned to a bidimensional structure in the ab plane and stacked layers along the c-axis. | 1 · Abstract |
| HHTP ligand | 2,3,6,7,10,11-hexahydroxytriphenyleneHHTP molecular ligand | 0D · UnknownMolecular precursor and spectroscopy/XRD comparison material. | 2 · Introduction |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Fe-HHTP composite Li-ion battery electrode on copper foilresearch_0784__mat__fe_hhtp_mof | Electrode · Composite Sample · Composite | Fe-HHTP, Super P carbon black and PVDF in 80:10:10 weight ratio with NMP; slurry deposited on Cu foil, dried 10 min on a hot plate and 12 h at 120 C under vacuum; pressed at 128 kg cm-2 and cut as 8 mm discs.0.012 mm copper foil | 10 · 4.3 Electrochemical measurements and operando Raman |
| Fe-HHTP powder pellet in Swagelok two-probe cellresearch_0784__mat__fe_hhtp_mof | Pellet · Target Sample · Pristine Framework | Synthesised Fe-HHTP powder pressed between stainless steel current collectors under 226 MPa during EIS-derived conductivity measurement.two stainless steel current collectors in a Swagelok cell · pellet thickness measured with a micrometer, value not reported | 10 · 4.2 Powder and electrodes ex situ characterization techniques · Figure S6 |
| Fresh and cycled Fe-HHTP composite electrodes stopped at 0.1 V or 3 Vresearch_0784__mat__fe_hhtp_mof | Electrode · Composite Sample · Composite | Composite electrodes galvanostatically cycled and stopped at 0.1 V (lithiated) or 3 V (delithiated) after 1, 20 and 200 cycles; washed with DEC or DMC and dried under vacuum before ex situ measurements.copper foil; assembled in CR2032 coin cells or Swagelok cells | 5 · 2.3 Study of the electrochemical mechanism · Figures 3-5; Figure S8 |
| Rectangular Fe-HHTP composite electrode in adapted operando Raman cellresearch_0784__mat__fe_hhtp_mof | Electrode · Composite Sample · Composite | Rectangular electrodes of approximately 10 mm x 2 mm assembled in an Ar glovebox with lithium disc, DMC:EC LiPF6 electrolyte, two glass-fibre separators and CaF2 window.copper foil in adapted electrochemical Raman cell with CaF2 window | 10 · 4.3 Electrochemical measurements and operando Raman · Figure S11 |
| synthesised Fe-HHTP powderresearch_0784__mat__fe_hhtp_mof | Powder · Target Sample · Pristine Framework | Solvothermal product centrifuged, washed with water, ethanol and acetone twice each, and dried at 50 C. | 9 · 4.1 MOF synthesis |
| HHTP ligand powderresearch_0784__mat__hhtp_ligand | Powder · Pristine Control · Unknown | Commercial HHTP used as synthesis precursor and comparison material. | 2 · Figure S1 · Figure S1 |