Zhang K., Mao X., Yan W. et al. · Small · 2025 · e07135
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.
A symmetric Cu-CAT-Rad button cell reaches 365.2 F g-1 at 0.5 A g-1, 50.72 W h kg-1 at 0.25 kW kg-1, and about 91.6% capacitance retention after 10000 cycles.
Caveat: Device fabrication details are vague in the provided SI text; separator/cell hardware are not specified.
8 · Results and Discussion; Conclusion · Figure 6 · Linked to 3 structured results
Defects, mixed-valence Cu nodes, semiquinone structures, hierarchical pores and improved hydrophilicity are linked to higher pseudocapacitance and gravimetric capacitance in Cu-CAT-Rad.
Caveat: Application electrode includes acetylene black/PVDF/Ni foam, so absolute electrochemical values are electrode-level rather than isolated-powder transport values.
6-7 · Results and Discussion · Figure 4 · Linked to 6 structured results
DFT indicates defective Cu-CAT binds Cl- more strongly than ideal Cu-CAT, supporting improved electrolyte-ion affinity and charge transfer at defect sites.
Caveat: SI computational section contains unrelated MoO3Nix/OH- text, likely a template carry-over; main-text Cu-CAT DFT values were used.
7 · Results and Discussion · Figure 5 · Linked to 3 structured results
Gamma irradiation synthesises Cu-CAT under ambient conditions while inducing etching/reduction that generates defects and more low-valence Cu centres.
Caveat: Cu+ fractions are read from rendered SI Figure S16; exact defect concentration is not directly quantified.
2-3 · Results and Discussion · Figures 2-3 · Linked to 7 structured results
Cu-CAT-Rad shows faster charge-transfer and ion-diffusion kinetics than Cu-CAT-Sol by EIS-derived resistance, resistivity/slope term and Cl- diffusion coefficient.
Caveat: Main text labels 2.69/2.84 Ohm as interface transfer resistance, whereas SI Table S4 labels those values as Rs and lists Rct as 8.89/18.1 Ohm.
7 · Results and Discussion · Figure 4g-h; Figure S35 · Linked to 8 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Cu-CAT (Cu-based catecholate 2D conductive MOF)Browse family: Cu₃(HHTP)₂ / Cu–HHTP | Cu-CAT / Cu-HHTP framework; exact empirical formula not reportedCu, mixed Cu2+/Cu+ centres reported by XPS/XAFS · 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP), oxidised/semquinonate catecholate units | 2D · PristineHexagonal P6/m; ordered 1D pore channels; PXRD indexed to 110, 200, 210 and 002 planes. | 1-2 · Abstract; Results and Discussion · Figure 1 |
| Defective Cu-CAT computational model | Cu-CAT model with local organic linker deficienciesCu nodes at defect-rich Cu-CAT sites · HHTP-derived linker with local organic linker deficiencies | 2D · Model SystemOptimised defective Cu-CAT model used for Cl- adsorption and charge-density analysis. | 7 · Results and Discussion · Figure 5b,d,f |
| Ideal Cu-CAT computational model | Cu-CAT modelCu nodes · HHTP-derived linker in ideal Cu-CAT model | 2D · Model SystemIdeal Cu-CAT structure used for DFT comparison. | 7 · Results and Discussion · Figure 5a,c,e |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Cu-CAT-Rad//Cu-CAT-Rad symmetric button cellresearch_0824__mat__cu_cat | Electrode · Composite Sample · Composite | Symmetric two-electrode device with Cu-CAT-Rad as both cathode and anode and 3.0 M KCl electrolyte.two-electrode button cell | 7-8 · Results and Discussion · Figure 6 |
| Cu-CAT-Rad/NF electroderesearch_0824__mat__cu_cat | Electrode · Composite Sample · Composite | Cu-CAT-Rad, acetylene black and PVDF slurry coated on Ni foam and dried at 60 degC overnight; active-material loading about 3 mg cm-2.Ni foam | Section S1 |
| Cu-CAT-Radresearch_0824__mat__cu_cat | Powder · Target Sample · Pristine Framework | Black powder synthesised by 60Co gamma irradiation; defect-rich and lower-valence Cu enriched. | 2 · Results and Discussion · Figure 1a |
| Cu-CAT-Sol/NF electroderesearch_0824__mat__cu_cat | Electrode · Pristine Control · Composite | Cu-CAT-Sol, acetylene black and PVDF slurry coated on Ni foam and dried at 60 degC overnight; active-material loading about 3 mg cm-2.Ni foam | Section S1 |
| Cu-CAT-Solresearch_0824__mat__cu_cat | Powder · Pristine Control · Pristine Framework | Conventional hydrothermal/solvothermal comparison sample from the same precursor solution. | 2 · Results and Discussion |
| Defective Cu-CAT modelresearch_0824__mat__cu_cat_model_defective | Model · Model System · Model | DFT model of Cu-CAT with local organic linker deficiencies. | 7 · Results and Discussion · Figure 5b |
| Ideal Cu-CAT modelresearch_0824__mat__cu_cat_model_ideal | Model · Model System · Model | DFT model of ideal Cu-CAT. | 7 · Results and Discussion · Figure 5a |