Primary studyCore evidenceTransport Physics

Synthesis of a novel double-ligand nickel conductive metal–organic framework material and its electrochemical characterization for supercapacitors

Wang H., Zhu C., Wu M. et al. · Journal of Materials Science · 2021 · 2517-2527

4materials
4samples
3synthesis routes
17measurements
55results
6claims and caveats

Evidence map

Open a family to keep every result attached to its sample, method and conditions.

Author interpretations and caveats

Paraphrased for this database from the authors’ stated interpretations — never quoted verbatim — and kept separate from reported measurements.

Application RelevanceSupport assessment: High

Ni-MOF//AC ASC devices show practical energy-storage potential, with 30.7 Wh kg-1 at 225 W kg-1 and high cycling retention.

Caveat: Device values depend on activated carbon negative electrode and cell design, not only the pristine MOF.

9 · Electrochemical characterization · Figure 5 · Linked to 3 structured results

Application RelevanceSupport assessment: High

Ni-MOF is a promising supercapacitor electrode material, giving 318 F g-1 at 1 A g-1 and stable cycling.

Caveat: Performance is in a composite electrode with acetylene black/PTFE binder rather than a binder-free pristine framework conductivity test.

6-7 · Electrochemical characterization · Figure 4 · Linked to 2 structured results

CaveatSupport assessment: High

The paper is categorised as conductive-MOF evidence through electrochemical/EIS conductivity claims, but it does not report a direct four-probe or two-probe bulk electrical conductivity value.

Caveat: Direct transport measurements were not found in the main text or SI text.

6-9 · Electrochemical characterization · Figures 4c and 5f · Linked to 2 structured results

Composite RoleSupport assessment: Medium

Commercial activated carbon served as the negative electrode component in the Ni-MOF//AC ASC and had its own SI electrochemical control data.

Caveat: AC control values are estimated from SI Fig. S3 axes; the SI caption does not give a full AC electrode preparation recipe.

Fig. S3 caption/text · Figure S3 · Linked to 3 structured results

Structure Property LinkSupport assessment: Medium

The double-ligand conjugated framework and nickel centres improved redox capability and electronic conductivity.

Caveat: No direct bulk electrical conductivity measurement is reported; evidence is from electrochemical performance, EIS resistance and qualitative discussion.

1-2 · Abstract / Introduction · Linked to 3 structured results

Structure Property LinkSupport assessment: Medium

The hollow, porous Ni-MOF structure promotes electrolyte storage/diffusion and supports electrochemical performance.

Caveat: Morphology is directly observed, but the performance linkage is interpretive.

2,4 · Introduction / Structure and morphology · Figure 3 · Linked to 4 structured results

Material identities

Names and aliases are kept exactly within the paper’s own identity model.

MaterialCompositionStructure contextSource
commercial activated carbon YEC-8Aactivated carbon; exact composition not reportedunknown · DerivedCommercial activated carbon used as the ASC negative electrode and electrochemical control.Fig. S3 caption/text · Figure S3
double-ligand Ni-MOFProduct 1; empirical formula not stated in the extracted textbinuclear Ni2O(O2C)4 units with Ni2+ centres · H2L ligand from terephthaloyl chloride and (R/S)-phenylalanine methyl ester; 4,4'-bipyridine (Bpy)1D · PristineChiral orthorhombic P21212 one-dimensional MOF; 1D chains on the ab plane strengthened by Bpy coordination between adjacent Ni2O clusters.4 · Structure and morphology · Figure 1
Ni-MOF//AC asymmetric supercapacitorNi-MOF positive electrode plus activated carbon negative electrodeNi nodes from Ni-MOF positive electrode · H2L and Bpy in Ni-MOF1D · CompositeAsymmetric supercapacitor assembled from Ni-MOF positive electrode and activated carbon negative electrode.7 · Electrochemical characterization · Figure 5
Ni-MOF composite electrode filmNi-MOF:acetylene black:PTFE = 7:2:1 on nickel foamNi nodes from Ni-MOF · H2L and Bpy in Ni-MOF1D · CompositeComposite working electrode made from Ni-MOF active material, conductive carbon and PTFE binder pressed onto nickel foam.3 · Electrochemical measurements

Sample register

Sample form, processing state and composition status define the context for measurements.

Show 4 sample records
SampleForm and roleProcessing and geometrySource
activated carbon control electroderesearch_0548__mat__mat_activated_carbonElectrode · Composite Component · Derived CarbonCommercial AC (YEC-8A) electrode/control used for electrochemical measurements and as ASC negative electrode component; detailed electrode recipe not separately reported in SI text.Fig. S3 caption/text · Figure S3
Ni-MOF//AC ASC deviceresearch_0548__mat__mat_ni_mof_ac_ascElectrode · Composite Sample · CompositeNi-MOF positive electrode with 2 mg active loading and activated carbon negative electrode with 1 mg loading; positive:negative mass ratio 2:1.7 · Electrochemical characterization · Figure 5
Ni-MOF working electrode on nickel foamresearch_0548__mat__mat_ni_mof_electrodeElectrode · Composite Sample · CompositeNi-MOF, acetylene black and PTFE mixed 7:2:1, dried at 60 deg C for 5 h, pressed onto nickel foam.nickel foam · about 0.1 mm film3 · Electrochemical measurements
Ni-MOF green powderresearch_0548__mat__mat_ni_mofPowder · Target Sample · Pristine FrameworkGreen powder product after washing with ethanol and water and drying at 60 deg C for 12 h.3 · Synthesis of Ni-MOF