Primary studyCore evidenceTransport Physics

2D Tetrathiafulvalene-Based Metal–Organic Framework Linked by Hydrogen Bonding for Boosting Long-Cycle Stability of Lithium-Ion Batteries

Wang C., Dong F.-F., Cai Z.-X. et al. · European Journal of Inorganic Chemistry · 2025 · e202500119

1materials
7samples
2synthesis routes
14measurements
66results
5claims and caveats

Evidence map

Open a family to keep every result attached to its sample, method and conditions.

Author interpretations and caveats

Paraphrased for this database from the authors’ stated interpretations — never quoted verbatim — and kept separate from reported measurements.

Application RelevanceSupport assessment: Medium

m-TTFTB-Co-MOF anodes exhibit high reversible capacity and long-cycle stability in lithium-ion battery testing.

Caveat: Some long-cycle values are figure-axis estimates and the Experimental Section contains apparent copy/paste inconsistencies in cell chemistry.

main p.4-6 · 2.4. Electrochemical Properties · Figure 3; Figure S8 · Linked to 4 structured results

Phase AssignmentSupport assessment: High

PXRD after activation and TGA indicate that the MOF framework remains intact after 200 C activation and is thermally steady before 417 C.

Caveat: PXRD result is qualitative because no peak-by-peak table is provided.

main p.3 · 2.2. Characterization · Figures S5-S7 · Linked to 2 structured results

Structure Property LinkSupport assessment: Medium

DMF and H2O molecules generate hydrogen bonds that connect adjacent 2D layers, stabilise the framework, shorten S...S contacts and improve electron/ion transport pathways.

Caveat: The structure-property link is argued from crystallography, conductivity and electrochemical performance; no direct directional single-crystal transport measurement is reported.

main p.2-3 · Introduction and 2.2. Characterization · Figure 1 · Linked to 4 structured results

Transport MechanismSupport assessment: Medium

The combination of electroactive Co centres and redox-active TTF ligands improves MOF conductivity and supports charge hopping through the MOF framework.

Caveat: Conductivity is low and measured on compacted particles; mechanism is inferred from composition, redox CV and computational bandgap.

main p.4 · 2.3. Redox Properties · Figure S3 · Linked to 4 structured results

Transport MechanismSupport assessment: Medium

Li+ storage sites are primarily located near carboxyl oxygen atoms in m-TTFTB-Co-MOF.

Caveat: Based on computational ESP/storage-location figures and consistency with electrochemical data; computational details are sparse in the text layer.

main p.6 · 2.4. Electrochemical Properties · Figures S9-S10 · Linked to 2 structured results

Material identities

Names and aliases are kept exactly within the paper’s own identity model.

MaterialCompositionStructure contextSource
m-TTFTB-Co-MOFC37H29N1O12S4Co2Co2+ ions in binary metal secondary building units; all Co2+ described as six-coordinate. · 3,3',3'',3'''-([2,2'-bi(1,3-dithiolylidene)]-4,4',5,5'-tetrayl)tetrabenzoic acid, abbreviated m-H4-TTFTB / H4TTFTB.2D · PristineTriclinic P-1 2D square-lattice TTF-Co MOF; adjacent 2D planes are interconnected by hydrogen bonds involving H2O and DMF, with pi-pi and S...S interactions.main p.2 · 2.2. Characterization · Figure 1

Sample register

Sample form, processing state and composition status define the context for measurements.

Show 7 sample records
SampleForm and roleProcessing and geometrySource
Activated m-TTFTB-Co-MOF sampleresearch_0681__mat__m_ttftb_co_mofPowder · Target Sample · Pristine FrameworkActivated at 200 C for 2 h before PXRD comparison.main p.3 · 2.2. Characterization · Figure S5
Red-black bulky crystals of m-TTFTB-Co-MOFresearch_0681__mat__m_ttftb_co_mofSingle Crystal · Target Sample · Pristine FrameworkFiltered, washed with DMF and ethanol, and dried in air after oven synthesis.main p.2 · 2.1. Synthesis
m-TTFTB-Co-MOF anode electrode in coin cellresearch_0681__mat__m_ttftb_co_mofElectrode · Composite Sample · CompositeAs-prepared m-TTFTB-Co-MOF crystal used as active anode material; cell tested in 0.01-3.0 V for LIB measurements. Methods section also contains inconsistent Na-cell text, recorded in audit.CR2025 coin-cell electrode assembly.main p.4 · 2.4. Electrochemical Properties · Figures 2-4
Prelithiated m-TTFTB-Co-MOF||LiFePO4 full cellresearch_0681__mat__m_ttftb_co_mofElectrode · Composite Sample · Compositem-TTFTB-Co-MOF electrode prelithiated for three cycles at 1 A g^-1, then paired as negative electrode with LiFePO4 positive electrode.Coin full cell.main p.5-6 · 2.4. Electrochemical Properties · Figure S8
Pressed-pellet m-TTFTB-Co-MOF conductivity sampleresearch_0681__mat__m_ttftb_co_mofPellet · Target Sample · Pristine FrameworkPressed pellet with gold wires attached using conductive carbon adhesive paste for two-probe I-V measurements.Thickness 0.0756 cm; length 0.205 cm; width 0.400 cm; cross-sectional area 3.02 x 10^-2 cm2.main p.6 · Instruments and Measurements · Figure S3b; Table S6
m-TTFTB-Co-MOF DMF/Nafion/TBAPF6 redox-test dispersionresearch_0681__mat__m_ttftb_co_mofUnknown · Target Sample · Composite3.0 mg target sample dispersed/dissolved in 3.0 mL anhydrous DMF with Nafion binder and TBAPF6 supporting electrolyte; purged with high-purity nitrogen.Glassy carbon working electrode.main p.6 · Redox Test · Figure S3a
m-TTFTB-Co-MOF repeating-unit computational modelresearch_0681__mat__m_ttftb_co_mofModel · Model System · ModelModel used for electrostatic-potential, Li-ion storage-location and HOMO-LUMO calculations.not_applicablemain p.6 · 2.4. Electrochemical Properties · Figures S9-S11