Deng L., Qu H., Zhang Y. et al. · Journal of Solid State Chemistry · 2020 · 121026
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 paper discusses electron transport qualitatively but does not report a direct electrical conductivity or thermoelectric measurement for either MOF.
Caveat: Based on the readable main article and SI text layers.
1,6 · Abstract; Conclusions · Linked to 2 structured results
Ni-MOF-2D shows better supercapacitor performance than Ni-MOF-3D, with higher capacitance and rate retention, attributed to the 2D layered structure facilitating electron transport and ion storage.
Caveat: No direct electrical conductivity, charge-transfer-resistance or ion-diffusion coefficient values are reported.
1,6 · Abstract; 3.6 Electrochemical performances · Fig. 6 · Linked to 4 structured results
Compound 2 has higher thermal stability than compound 1, attributed to high-temperature synthesis and an interpenetrating three-dimensional framework.
Caveat: The attribution is the authors' interpretation from TGA and structure, not an independently isolated variable.
5 · 3.5 Purity and stability · Fig. 4 · Linked to 3 structured results
Changing the hydrothermal temperature from 120 deg C to 180 deg C in the same reaction system changes Ni coordination geometry and framework dimensionality, giving 2D layered compound 1 and 3D interpenetrated compound 2.
Caveat: The mechanistic interpretation is based on the authors' structural comparison, not in situ monitoring.
4 · 3.3 Discussion of temperature effect · Fig. 3 · Linked to 3 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Ni-MOF-2D, compound 1, {[Ni0.5(DTA)0.5(H2O)].H2O}n | {[Ni0.5(DTA)0.5(H2O)].H2O}n; empirical formula C7H8N2Ni0.5O4Ni(II), slightly distorted octahedral Ni centre · DTA2- from H2DTA, 2,5-di(1H-imidazol-1-yl)terephthalic acid | 2D · PristineTriclinic P-1 2D wave-type layered framework; adjacent layers are linked by hydrogen bonding into a 3D supramolecular architecture. | 1-3 · Abstract; 3.1 Crystal structure · Table 1; Fig. 1 |
| Ni-MOF-3D, compound 2, [Ni(DTA)]n | [Ni(DTA)]n; empirical formula C14H8N4NiO4Ni(II), distorted [NiO2N2] tetrahedral geometry · DTA2- from H2DTA, 2,5-di(1H-imidazol-1-yl)terephthalic acid | 3D · PristineMonoclinic C2/c 3D two-fold interpenetrated (4,4)-connected PtS net with 1D channels. | 1,3-4 · Abstract; 3.2 Crystal structure · Table 1; Fig. 2 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Green block crystals of compound 1research_0835__mat__ni_mof_2d_1 | Single Crystal · Target Sample · Pristine Framework | As-synthesised, washed with deionised water and dried at 50 deg C in vacuum | 2 · 2.2 Synthesis of compound 1 |
| Ni-MOF-2D working electroderesearch_0835__mat__ni_mof_2d_1 | Electrode · Composite Sample · Composite | Active material/carbon black/PTFE paste coated between nickel foam pieces, dried and pressedNickel foam | 2 · 2.5 Electrochemical measurements |
| Orange block crystals of compound 2research_0835__mat__ni_mof_3d_2 | Single Crystal · Target Sample · Pristine Framework | As-synthesised by the same process as 1 except at 180 deg C | 2 · 2.3 Synthesis of compound 2 |
| Ni-MOF-3D working electroderesearch_0835__mat__ni_mof_3d_2 | Electrode · Composite Sample · Composite | Active material/carbon black/PTFE paste coated between nickel foam pieces, dried and pressedNickel foam | 2 · 2.5 Electrochemical measurements |