Primary studyCore evidenceTheory Transport

Dual-metal sites enable conductive metal-organic frameworks with extraordinary high capacitance for transparent energy storage devices

Zhao C.-E., Wang S., Chen S. et al. · Chemical Science · 2025 · 9276-9283

3materials
10samples
7synthesis routes
12measurements
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

The CuNi-HHTP MSC retains substantial capacitance over cycling and bending tests and can power a red LED with three devices in series.

Caveat: LED demonstration runtime is reported as a lower bound.

p006 / 9281 · Results and discussion · Fig. 5f-h and Fig. S8 · Linked to 5 structured results

Application RelevanceSupport assessment: High

Laser-scribed interdigital CuNi-HHTP MSCs improve transparency and areal capacitance relative to sandwich-type FTSCs.

Caveat: Device values include composite architecture effects and should not be treated as pristine-framework intrinsic transport alone.

p005 / 9280 · Results and discussion · Fig. 5 and Fig. S7 · Linked to 5 structured results

CaveatSupport assessment: High

No additional local document was needed for first-hand extraction; the main article states that additional experimental data are included in the ESI, which was available and read.

p007 / 9282 · Data availability

Structure Property LinkSupport assessment: High

Ni incorporation in CuNi-HHTP creates dual metal sites and nanorod morphology that improve electron/ion transport relative to single-metal controls.

Caveat: Sheet resistance values for single-metal controls were only estimated from Fig. 3a, but conductivities were reported exactly.

p004 / 9279 · Results and discussion · Fig. 3a-b · Linked to 5 structured results

Transport MechanismSupport assessment: Medium

DFT calculations support different K+ adsorption energetics on Cu-HHTP and Cu/Ni sites in CuNi-HHTP and are used to rationalise ion-transport kinetics.

Caveat: The main text states Ni incorporation is favourable for K+ adsorption although the reported Cu-HHTP value is more negative than the CuNi-HHTP site values.

p005 / 9280 · Results and discussion · Fig. 4e · Linked to 3 structured results

Transport MechanismSupport assessment: High

CuNi-HHTP charge storage involves Faradaic K+ insertion/extraction with conversion between C=O and C-O bonding.

Caveat: Mechanism is inferred from ex situ XPS/FT-IR trends and DFT adsorption calculations.

p004-p005 / 9279-9280 · Results and discussion · Fig. 4 · Linked to 4 structured results

Material identities

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

MaterialCompositionStructure contextSource
Cu-HHTPBrowse family: Cu₃(HHTP)₂ / Cu–HHTPCu-HHTPCu · HHTP2D · PristineSingle-metal layered HHTP c-MOF; PXRD peaks indexed to layered structures.p003 / 9278 · Results and discussion · Fig. 2
CuNi-HHTPBrowse family: Cu/Ni–HHTP familyCu/Ni-HHTP framework; HHTP = 2,3,6,7,10,11-hexahydroxytriphenyleneCu and Ni metal sites · HHTP2D · Pristine2D honeycomb c-MOF with slipped-parallel ab stacking and 1D channels; theoretical pore size about 1.8 nm.p002 / 9277 · Results and discussion · Fig. 1
Ni-HHTPBrowse family: Ni₃(HHTP)₂ / Ni–HHTPNi-HHTPNi · HHTP2D · PristineSingle-metal layered HHTP c-MOF control with rod-like morphology.p003 / 9278 · Results and discussion · Fig. 2

Sample register

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

Show 10 sample records
SampleForm and roleProcessing and geometrySource
Cu-HHTPresearch_0768__mat__mat_cu_hhtpPowder · Pristine Control · Pristine FrameworkAs-synthesised single-metal control.S2 · Experimental Procedures
Cu-HHTP computational modelresearch_0768__mat__mat_cu_hhtpModel · Model System · ModelDFT model derived from Cu-HHTP crystal structure.S4 · DFT Calculations
CuNi-HHTP (1:3)research_0768__mat__mat_cuni_hhtpPowder · Pristine Control · Mixed MetalAs-synthesised atomic-ratio variant.S2 · Experimental Procedures · Fig. S3
CuNi-HHTP (3:1)research_0768__mat__mat_cuni_hhtpPowder · Pristine Control · Mixed MetalAs-synthesised atomic-ratio variant.S2 · Experimental Procedures · Fig. S3
CuNi-HHTP thin film electrode on ITO-PETresearch_0768__mat__mat_cuni_hhtpThin Film · Target Sample · Mixed MetalSprayed CuNi-HHTP layer; loading mass 0.75 mg cm^-2.ITO-PET, O2 plasma treatedS3 · Devices fabrication
Sandwich-type flexible transparent CuNi-HHTP supercapacitorresearch_0768__mat__mat_cuni_hhtpElectrode · Pristine Control · CompositeTwo CuNi-HHTP thin film electrodes assembled sandwich-style with PVA/KCl gel electrolyte.ITO-PET · 370 umS7 · Figures · Fig. S6
CuNi-HHTP computational modelresearch_0768__mat__mat_cuni_hhtpModel · Model System · ModelDFT model constructed by partial metal substitution.S4 · DFT Calculations
Laser-scribed interdigital CuNi-HHTP MSCresearch_0768__mat__mat_cuni_hhtpElectrode · Target Sample · CompositeCO2-laser-scribed interdigital device with Cu current collectors and PVA/KCl gel electrolyte.ITO-PET · 190 ump005 / 9280 · Results and discussion · Fig. 5a-b
CuNi-HHTP nanorodsresearch_0768__mat__mat_cuni_hhtpPowder · Target Sample · Mixed MetalAs-synthesised nanorod-like crystals.S2 · Experimental Procedures
Ni-HHTPresearch_0768__mat__mat_ni_hhtpPowder · Pristine Control · Pristine FrameworkAs-synthesised single-metal control.S2 · Experimental Procedures