Li Y., Xu Y., Liu Y. et al. · Small · 2019 · 1902463
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.
The Y3//AC aqueous device delivers 189.23 F g-1 at 0.5 A g-1 and a maximum reported energy density of 55.26 Wh kg-1.
Caveat: Device performance is for a composite asymmetric aqueous device, not a pristine MOF-only measurement.
7 · Results and Discussion · Figure 4f · Linked to 2 structured results
Y3 is the best pristine Ni-MOF sample for supercapacitor electrodes, reaching 977.04 F g-1 at 0.5 A g-1 and 92.34% retention after 5000 cycles.
Caveat: The tested working electrode is a composite of Ni-MOF, acetylene black and PTFE on nickel foam.
7 · Conclusions · Linked to 2 structured results
The authors explicitly note that the hexagonal Ni-MOF, as a MOF material, has poor electrical conductivity and suggest combining MOFs with conductive materials in future.
7 · Conclusions
Surface-grown cross-linked mesh structures improve mixing with conductive carbon, accelerate electron transfer at the electrode-electrolyte interface, increase ion contact area and expose more active sites.
Caveat: Conductivity enhancement is inferred from morphology and electrochemical performance; no standalone conductivity value is provided.
7 · Results and Discussion · Linked to 3 structured results
The exposed (001) crystal plane on the hexagonal face shortens electron-transport and ion-diffusion paths compared with surrounding rectangular planes.
Caveat: Transport distance is argued schematically and structurally; no direct electrical conductivity measurement is reported.
7 · Results and Discussion · Figure 5 · Linked to 3 structured results
The formation of hexagonal Ni-MOF is proposed to proceed by accumulation of sheet-like structures controlled by reactant amount.
Caveat: Growth mechanism is inferred from SEM morphology at three reactant amounts.
2 · Results and Discussion · Scheme S1 · Linked to 1 structured result
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| hexagonal Ni-MOF | [Ni(HBTC)(4,4'-bipy)]Ni(II) · HBTC (partially deprotonated 1,3,5-benzenetricarboxylic acid) and 4,4'-bipyridine | 3D · Pristine3D porous pillared-layer framework; top and bottom hexagonal faces assigned to exposed (001) crystal planes. | 3 · Results and Discussion · Figure 2 |
| hexagonal Ni-MOF//AC aqueous device | Ni-MOF positive electrode paired with activated carbon negative electrodeNi(II) in Ni-MOF positive electrode · HBTC and 4,4'-bipyridine in Ni-MOF component | unknown · CompositeTwo-electrode aqueous supercapacitor device using hexagonal Ni-MOF and activated carbon. | 6 · Results and Discussion · Figure 4 |
| bare nickel foam | Ni foam | unknown · UnknownCommercial nickel foam substrate/control electrode. | 4 · 1.1 Materials and reagents |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| bare Ni-foam electroderesearch_0804__mat__nickel_foam_control | Electrode · Pristine Control · Unknown | bare substrate evaluated in three-electrode cellnickel foam | 3 · Results and Discussion · Figure S7 |
| Y1-Y5//AC aqueous devicesresearch_0804__mat__ni_mof_ac_device | Electrode · Composite Sample · Composite | two-electrode aqueous devices in 3.0 M KOHfoamed nickel foam for both positive and negative electrodes | 5 · 1.4 Electrochemical measurements |
| reactant-amount growth seriesresearch_0804__mat__hexagonal_ni_mof | Powder · Target Sample · Pristine Framework | 80 deg C for 18 h with reactant amounts of 0.375, 0.75, and 1.5 mmol | 2 · Results and Discussion · Scheme S1 |
| temperature-screen Ni-MOF samplesresearch_0804__mat__hexagonal_ni_mof | Powder · Target Sample · Pristine Framework | 18 h reactions at 40, 60, 80, and 100 deg C | 2 · Results and Discussion · Figure S5 |
| Y1research_0804__mat__hexagonal_ni_mof | Powder · Target Sample · Pristine Framework | 80 deg C solvothermal synthesis for 6 h | 3 · Results and Discussion · Figure 1 |
| Y1-Y5 three-electrode working electrodesresearch_0804__mat__hexagonal_ni_mof | Electrode · Composite Sample · Composite | Ni-MOF, acetylene black and PTFE mixed 80:15:5; slurry coated on nickel foam and pressed at 10 MPafoamed nickel foam, approx. 1 cm2 | 5 · 1.4 Electrochemical measurements |
| Y2research_0804__mat__hexagonal_ni_mof | Powder · Target Sample · Pristine Framework | 80 deg C solvothermal synthesis for 12 h | 3 · Results and Discussion · Figure 1 |
| Y3research_0804__mat__hexagonal_ni_mof | Powder · Target Sample · Pristine Framework | 80 deg C solvothermal synthesis for 18 h; clearest cross-linked mesh structureaverage thickness approx. 1 um | 2 · Results and Discussion · Figure 1 |
| Y4research_0804__mat__hexagonal_ni_mof | Powder · Target Sample · Pristine Framework | 80 deg C solvothermal synthesis for 24 h | 3 · Results and Discussion · Figure 1 |
| Y5research_0804__mat__hexagonal_ni_mof | Powder · Target Sample · Pristine Framework | 80 deg C solvothermal synthesis for 30 h | 3 · Results and Discussion · Figure 1 |
| Y1-Y5 hexagonal Ni-MOF powdersresearch_0804__mat__hexagonal_ni_mof | Powder · Target Sample · Pristine Framework | as-synthesised powders obtained at 80 deg C for 6, 12, 18, 24, and 30 haverage thickness approx. 1 um for single hexagonal Ni-MOF | 3 · Results and Discussion · Figure 1 |