Sun X., Yan X., Song K. et al. · Chinese Journal of Chemistry · 2023 · 1691-1696
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.
TPQG-Cu-MOF is a promising cathode material for lithium-ion batteries, combining reversible capacity, rate capability, and long-cycle stability.
Caveat: Battery performance is measured on a composite electrode containing 30 wt% conductive carbon black and 10 wt% PVDF, not on a neat MOF-only electrode.
p005 / 1695 · Conclusions · Figure 2 · Linked to 7 structured results
The capacity contribution from conductive carbon black is small relative to the TPQG-Cu-MOF composite electrode capacity.
Caveat: The exact composition and normalisation of the carbon-black-only control electrode are not fully described.
p004 / 1694 · Measurement of electrochemical performance · Figure S19 · Linked to 2 structured results
The pristine TPQG-Cu-MOF framework retains crystallinity after solvent exposure and provides high surface area and porosity relevant to electrolyte penetration.
Caveat: Solvent-stability evidence is qualitative PXRD retention after soaking; no quantitative crystallinity loss is reported.
p003 / 1693 · Preparation and characterizations of materials · Figure 1c, Figure S16 · Linked to 4 structured results
TPQ-8OH undergoes in-situ cyclodehydrogenation during MOF synthesis, yielding a TPQG-based framework.
Caveat: Structure assignment is inferred from PXRD simulation/refinement and digestion-product comparison, not single-crystal diffraction.
p002 / 1692 · Preparation and characterizations of materials · Figure S11, Figure S12 · Linked to 2 structured results
The pyrazine C=N linkages and CuO2 units are reversible redox-active sites during Li insertion/extraction.
Caveat: Mechanism is inferred from ex-situ spectroscopy and schematic electron/Li accounting.
p004 / 1694 · Exploration of the lithium-ion storage mechanism · Figure 3 · Linked to 7 structured results
TPQG-Cu-MOF behaves as a semiconductor because conductivity increases non-linearly with temperature from room temperature to 100 C.
Caveat: Transport was measured by two-probe powder-pellet geometry; contact effects are possible and no activation energy is reported.
p003 / 1693 · Preparation and characterizations of materials · Figure S14 · Linked to 2 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Conductive carbon black control electrode | conductive carbon black control electrode | unknown · CompositeNon-MOF carbon control used to estimate the capacity contribution from conductive carbon black. | p004 / 1694 · Measurement of electrochemical performance · Figure S19 |
| TPQ-8OCH3 | C42H38N4O8Methoxy-protected precursor to TPQ-8OH | 0D · Model SystemSynthetic intermediate. | p004 / S3 · S1.3 Synthesis of Compounds · Scheme S1 |
| TPQ-8OH | C34H22N4O8Pyrazine-based octahydroxy ligand precursor | 0D · Model SystemMolecular ligand precursor used for TPQG-Cu-MOF synthesis. | p004 / S3 · S1.3 Synthesis of Compounds · Scheme S1 |
| TPQG-8OCH3 | C42H34N4O8Methoxy-protected cyclodehydrogenated precursor to TPQG-8OH | 0D · Model SystemSynthetic intermediate. | p005 / S4 · S1.3 Synthesis of Compounds · Scheme S2 |
| TPQG-8OH | C34H18N4O8Cyclodehydrogenated pyrazine-based octahydroxy control molecule | 0D · Model SystemControl compound and digestion-product analogue for identifying in-situ cyclodehydrogenation. | p002 / 1692 · Results and Discussion · Figure S12 |
| TPQG-Cu-MOF | Cu2(TPQG-8O).12H2OCu ions / CuO2 redox units · TPQG-8O generated by in-situ cyclodehydrogenation of TPQ-8OH during MOF synthesis | 2D · PristineAA-stacked 2D conductive MOF; Pawley-refined unit cell a = b = 33.84 Angstrom, c = 3.21 Angstrom, alpha = beta = 90 deg, gamma = 120 deg. | p002-p003 / 1692-1693 · Results and Discussion · Figure 1, Table S1 |
| TPQG-Cu-MOF cathode composite | TPQG-Cu-MOF/conductive carbon black/PVDFCu-containing TPQG-Cu-MOF active material · TPQG-Cu-MOF framework plus PVDF binder | unknown · CompositeComposite slurry-coated cathode containing MOF active material, conductive carbon black, and PVDF in a 6:3:1 mass ratio. | p003,p005 / 1693,1695 · Measurement of electrochemical performance; Experimental |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Conductive carbon black control electroderesearch_0155__mat__mat_carbon_black_control | Electrode · Pristine Control · Composite | Control electrode for estimating conductive carbon black capacity contribution.not specified | p004 / 1694 · Measurement of electrochemical performance · Figure S19 |
| TPQ-8OCH3 intermediateresearch_0155__mat__mat_tpq_8och3 | Powder · Model System · Model | Yellow-orange synthetic intermediate. | p004 / S3 · S1.3 Synthesis of Compounds · Scheme S1 |
| TPQ-8OH ligandresearch_0155__mat__mat_tpq_8oh | Powder · Model System · Model | Orange-brown molecular ligand precursor. | p004 / S3 · S1.3 Synthesis of Compounds · Scheme S1 |
| TPQG-8OCH3 intermediateresearch_0155__mat__mat_tpqg_8och3 | Powder · Model System · Model | Brick-red cyclodehydrogenated synthetic intermediate. | p005 / S4 · S1.3 Synthesis of Compounds · Scheme S2 |
| TPQG-8OH control moleculeresearch_0155__mat__mat_tpqg_8oh | Powder · Model System · Model | Brown-black control compound. | p005 / S4 · S1.3 Synthesis of Compounds · Scheme S2 |
| HCl digestion product of TPQG-Cu-MOFresearch_0155__mat__mat_tpqg_8oh | Powder · Model System · Model | TPQG-Cu-MOF soaked in 2 mol/L HCl for 2 d, filtered, washed, and vacuum dried. | p005 / 1695 · Experimental: The digestion of TPQG-Cu-MOF · Figure S12 |
| TPQG-Cu-MOF composite cathode on carbon-coated aluminium foilresearch_0155__mat__mat_tpqg_cu_mof_electrode | Electrode · Composite Sample · Composite | Slurry of TPQG-Cu-MOF, conductive carbon black and PVDF in NMP, spread on carbon-coated Al foil, dried at 85 C overnight, cut to 9 mm disks.carbon-coated aluminium foil | p005 / 1695 · Experimental: The preparation of half-cell |
| TPQG-Cu-MOF powder pellet for conductivityresearch_0155__mat__mat_tpqg_cu_mof | Pellet · Target Sample · Pristine Framework | Powder pressed at about 1 GPa; contacted by gold wires and silver paste. | p003 / S2 · S1.2 General Characterization · Figure S14 |
| As-synthesised TPQG-Cu-MOF black powderresearch_0155__mat__mat_tpqg_cu_mof | Powder · Target Sample · Pristine Framework | Solvothermally produced powder, washed and vacuum-dried overnight at room temperature. | p005 / 1695 · Experimental: TPQG-Cu-MOF |