Primary studyCore evidenceTransport Physics

A novel Sn-based coordination polymer with high-efficiency and ultrafast lithium storage

Zhang X., Han L., Li J. et al. · Journal of Materials Science and Technology · 2022 · 156-164

2materials
3samples
2synthesis routes
15measurements
103results
4claims 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

Conductive Sn-DHTPA is proposed as a high-energy/high-power LIB electrode material due to its high reversible capacity, high-rate cycling and fast Li-ion diffusion.

Caveat: Performance was measured in half-cells with Super-P/PVDF composite electrodes; full-cell or practical loading validation is not reported.

p008 / article p.163 · Conclusion · Linked to 7 structured results

Structure Property LinkSupport assessment: Medium

Micropores/mesopores and relatively low surface area are claimed to shorten Li-ion diffusion length, accommodate volume change and limit side reactions.

Caveat: Pore-to-performance linkage is interpretive; no isolated control with different porosity is shown.

p004 / article p.159 · Results and Discussion · Figure 1e,f · Linked to 4 structured results

Structure Property LinkSupport assessment: High

The lithium storage capacity is attributed to redox-active sites from both the aromatic DHTPA linker and Sn metal centres, with in-situ generated Sn nanoparticles participating during cycling.

Caveat: Evidence is based on ex-situ measurements at selected states; operando confirmation was not reported.

p001 / article p.156 · Abstract · Linked to 5 structured results

Transport MechanismSupport assessment: Medium

The high conductivity of Sn-DHTPA is attributed to mixed Sn4+/Sn2+ valence charge transfer, conjugated DHTPA, strong Sn-DHTPA ionic bond interactions and through-bond Sn/DHTPA orbital overlap.

Caveat: Mechanistic explanation is inferred by authors from spectroscopy and conductivity; no direct mobility or band-structure measurement is reported.

p004 / article p.159 · Results and Discussion · Linked to 6 structured results

Material identities

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

MaterialCompositionStructure contextSource
Sn-DHTPAH4O8Sn6Mixed Sn2+/Sn4+ tin species coordinated by hydroxyl and carboxyl oxygen atoms · DHTPA, 2,5-dihydroxyterephthalic acidunknown · PristineCrystalline Sn-based coordination polymer; tetragonal P-421c from Le Bail refinement; authors describe an organic-inorganic hybrid crystalline material with Sn ions coordinated to DHTPA.p003 / article p.158 · Results and Discussion · Table 1
Sn-DHTPA/Super-P/PVDF electrode on Cu foilSn-DHTPA with Super-P carbon and PVDF binderSn2+/Sn4+ centres in Sn-DHTPA · DHTPA in Sn-DHTPA; PVDF binder is non-framework componentunknown · CompositeComposite electrode made by coating a 7:2:1 Sn-DHTPA/Super-P/PVDF slurry on Cu foil for CR2032 half-cell testing.p002 / article p.157 · Experimental - Electrochemical measurements

Sample register

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

Show 3 sample records
SampleForm and roleProcessing and geometrySource
Sn-DHTPA composite LIB electroderesearch_0663__mat__mat_sn_dhtpa_electrodeElectrode · Composite Sample · CompositeSlurry of Sn-DHTPA, Super-P and PVDF in N-methylpyrrolidone coated onto Cu foil, dried at 120 C under vacuum for 12 h, then assembled into CR2032 half-cells.Cu foilp002 / article p.157 · Experimental - Electrochemical measurements
as-prepared Sn-DHTPA powderresearch_0663__mat__mat_sn_dhtpaPowder · Target Sample · Pristine FrameworkYellow precipitate collected, washed and dried at 120 C for 12 h in a vacuum drying oven.p002 / article p.157 · Experimental - Preparation of Sn-DHTPA
pressed Sn-DHTPA powder for four-point proberesearch_0663__mat__mat_sn_dhtpaPellet · Target Sample · Pristine FrameworkPowder pressed in a stainless-steel die for 0.5 h at 10 MPa before room-temperature four-point-probe measurement.p002 / article p.157 · Experimental - Material characterizations