Zeng J., Charyulu Devarayapalli K., Prabhakar Vattikuti S.V. et al. · Materials Letters · 2022 · 131305
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 SC-SD is claimed to have high rate capacity because CV shape is maintained as scan rate increases.
Caveat: CV evidence is device-level and not an intrinsic MOF transport measurement.
4 · Results and discussion · Fig. 3b · Linked to 3 structured results
The Ni-Zn MOF//Ni-Zn MOF SC-SD is claimed to show excellent electrochemical behaviour for supercapacitor applications.
Caveat: Main-text performance numbers are first-hand device values. The SI provides fabrication/test details, but no direct intrinsic MOF conductivity value is reported.
5 · Conclusion · Fig. 4 · Linked to 4 structured results
The SC-SD is claimed to have good reversibility and small equivalent series resistance based on GCD profiles.
Caveat: Equivalent series resistance is described qualitatively from GCD; the numeric EIS resistance reported separately is Rct.
4 · Results and discussion · Fig. 3c · Linked to 2 structured results
The authors assign successful formation of Ni-Zn MOF from XRD, XPS, FE-SEM and EDX evidence.
Caveat: No CIF or Rietveld/refinement data is supplied. The reported formula lacks Zn despite the Ni-Zn assignment.
4 · Results and discussion · Figs. 1-2 · Linked to 4 structured results
Introducing a second metal ion into Ni-MOFs is presented as a route to improve conductivity and electrochemical activity through a metal-metal bridge network.
Caveat: This mechanistic statement is mostly introductory/literature framing; the paper does not report a pristine Ni-MOF control or a direct conductivity value for the Ni-Zn MOF.
1 · Introduction
Mixed Ni and Zn valence/composition is claimed to provide abundant active centres and redox reactions that improve electrochemical activity.
Caveat: The Zn state is described as Zn2+/Zn2+, likely meaning only Zn2+; no quantitative valence deconvolution table was supplied.
4 · Results and discussion · Fig. 1d-f · Linked to 3 structured results
The yolk-shell microstructure with small nanorods is claimed to form by a solvo-hydrothermal process without any template.
Caveat: The main text reports morphology but does not provide time-dependent mechanism experiments.
4 · Results and discussion · Fig. 2 · Linked to 1 structured result
The device is claimed to exhibit appropriate electrical conductivity from EIS behaviour.
Caveat: No direct electrical conductivity in S cm-1 or bulk/pellet transport geometry is reported; this is a device-level EIS inference.
4-5 · Results and discussion · Fig. 4a · Linked to 2 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Ni-Zn MOF yolk-shell hierarchical microstructure | C26H44O8Ni2N8 (reported for the Ni-Zn MOF sample; Zn is absent from this reported formula)Nickel and zinc centres; XPS discussion reports Ni2+/Ni3+ and Zn2+ states · Benzene-1,3,5-tricarboxylic acid (BTC, trimesic acid); DMF fragments discussed in FTIR assignment | unknown · PristineSelf-assembled yolk-shell hierarchical microstructure; XRD profile matched reported Ni-MOF-II and US80 patterns | 1-2 · Introduction; Results and discussion · Fig. 1 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Ni-Zn MOF/carbon-fabric electroderesearch_0589__mat__ni_zn_btc_mof | Electrode · Composite Sample · Composite | Carbon fabric ultrasonically cleaned in deionized water, ethanol and acetone for 1 h; active material/Nafion/ethanol slurry drop-cast and dried at 90 deg C for 12 hCarbon fabric, 12 mm diameter, 0.3 mm thickness | 1.3 Electrochemical measurements |
| Ni-Zn MOF precipitate / powderresearch_0589__mat__ni_zn_btc_mof | Powder · Pristine Control · Mixed Metal | Solvo-hydrothermal precipitate separated by centrifugation, washed with deionized water and ethanol, and maintained at 100 deg C for 10 h | 2 · 2.1 Synthesis of Ni-Zn MOF |
| Ni-Zn MOF//Ni-Zn MOF split-cell symmetric device (SC-SD)research_0589__mat__ni_zn_btc_mof | Electrode · Composite Sample · Composite | Two identical 12 mm electrodes assembled in a standard split-cell device with filter paper separator and PVA/KOH gel electrolyteTwo carbon-fabric supported Ni-Zn MOF electrodes separated by filter paper; PVA/KOH gel electrolyte | 1.3 Electrochemical measurements |