Lin Z., Otake K.-I., Kajiwara T. et al. · Small · 2025 · 2411386
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.
VO-HHTP shows stable framework structure during zinc-battery redox and long-term cycling retention of 74% after 1000 cycles at 2 A g-1.
Caveat: Cycling result is for the 80 wt% composite cathode, not a pristine powder electrode.
p.6 / article p.2411386-6 · Results and Discussion · Figure 4c · Linked to 3 structured results
The semiconductive VO-HHTP cathode maintains useful rate capability when the active-material content is increased to 80 wt% and conductive agent reduced to 10 wt%.
Caveat: Several 80 wt% rate capacities are visual estimates from Figure 4b, but cycling retention is directly reported.
p.5-p.6 / article p.2411386-5 to 6 · Results and Discussion · Figure 4b-c · Linked to 3 structured results
VO-HHTP is assigned as a new HHTP-based MOF/PCP with vertical interconnection formed by octahedral VO6 chains.
Caveat: Structural model is inferred from PXRD, HRTEM, PDF/RDF, Raman, and computations rather than single-crystal diffraction.
p.7 / article p.2411386-7 · Conclusion · Linked to 6 structured results
The eclipsed stacking/interconnected structure is proposed to enlarge layer spacing, reduce layer slipping, and give a high BET surface area.
Caveat: Causal link is argued by structural interpretation and comparison to reported M-HHTP values.
p.4 / article p.2411386-4 · Results and Discussion · Figure S6 · Linked to 4 structured results
VO-HHTP is semiconductive, with moderate room-temperature pellet conductivity and thermally activated transport consistent with carrier hopping.
Caveat: Conductivity measured on pressed pellet by two-probe methods; contact effects are partly addressed by blank-resistance discussion.
p.5 / article p.2411386-5 · Results and Discussion · Figure 3 · Linked to 5 structured results
Charge storage involves a two-step redox process: HHTP ligand redox at the high-voltage plateau and vanadium redox at the low-voltage plateau.
Caveat: Mechanism is based on ex situ/in situ spectroscopy and differential capacity assignments.
p.7 / article p.2411386-7 · Results and Discussion · Figure 5e · Linked to 5 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Cu-HHTP; Cu3(HHTP)2Browse family: Cu₃(HHTP)₂ / Cu–HHTP | Cu3(HHTP)2Cu nodes in HHTP conductive MOF framework. · HHTP | 2D · PristinePreviously reported HHTP-based conductive MOF used as structural/PDF comparison control. | p.7 / article p.2411386-7 · Experimental Section · Materials |
| VO-HHTP; (VO)3(HHTP)2Browse family: (VO)₃(HHTP)₂ / VO–HHTP | V3C36H18O15; also written as (VO)3(HHTP)2Vanadyl VO2+ / vanadium-oxo nodes with octahedral VO6 chains connecting layers. · 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP) | 3D · PristineInterconnected lamellar 3D semiconductive PCP/MOF; trigonal P-3c1, eclipsed stacking, honeycomb-like channels, vertical interconnection by VO6 chains. | p.2 / article p.2411386-2 · Results and Discussion · Figure 1 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Cu-HHTP comparison powderresearch_0814__mat__cu_hhtp | Powder · Pristine Control · Pristine Framework | Prepared according to a previously reported procedure; used for PDF comparison. | p.7 / article p.2411386-7 · Experimental Section · Materials |
| Activated VO-HHTP powderresearch_0814__mat__vo_hhtp | Powder · Target Sample · Pristine Framework | Activated under 100 C for 10 h under N2 atmosphere before thermal comparison. | p.4 / article p.2411386-4 · Results and Discussion · Figure S5 |
| VO-HHTP 50 wt% composite cathoderesearch_0814__mat__vo_hhtp | Electrode · Composite Sample · Composite | Aqueous slurry drop-cast on graphite foil and dried overnight; used in two-electrode zinc cells.graphite foil disc, 11 mm diameter | p.8 / article p.2411386-8 · Electrochemical Measurements |
| VO-HHTP 80 wt% composite cathoderesearch_0814__mat__vo_hhtp | Electrode · Composite Sample · Composite | Aqueous slurry drop-cast on graphite foil and dried overnight; used for reduced-conductive-agent rate, CV, cycling, and in-situ EIS tests.graphite foil disc, 11 mm diameter | p.5 / article p.2411386-5 · Results and Discussion · Figure 4b-c |
| VO-HHTP structural/electronic modelresearch_0814__mat__vo_hhtp | Model · Model System · Model | DFT/Matlantis/Materials Studio structural model derived from refined VO-HHTP unit cell. | p.8 / article p.2411386-8 · PXRD Refinements and Structural Model |
| Pressed VO-HHTP pelletresearch_0814__mat__vo_hhtp | Pellet · Target Sample · Pristine Framework | VO-HHTP powder compressed under 20 MPa for 5 min into a 5 mm diameter, 9.91 mg pellet.gold cylinder contacts · 0.346 mm | p.8 / article p.2411386-8 · Conductivity Measurements · Figure S11 |
| As-prepared VO-HHTP black powderresearch_0814__mat__vo_hhtp | Powder · Target Sample · Pristine Framework | Synthesised from HHTP and VOSO4 in water by stirring and reflux, centrifuged hot, washed, and vacuum dried at 40 C overnight. | p.8 / article p.2411386-8 · Experimental Section · Synthesis of (VO)3(HHTP)2 |
| Charged/discharged VO-HHTP cathodes for ex situ characterisationresearch_0814__mat__vo_hhtp | Electrode · Composite Sample · Composite | 50% active material cathodes run to selected electrochemical states at 0.1 A g-1 after one GDC cycle.graphite foil disc | p.8 / article p.2411386-8 · Electrochemical Measurements · Figure 5 and Figures S19-S21 |