Primary studyCore evidenceTransport Physics

Construction of 1D conductive Ni-MOF nanorods with fast Li+ kinetic diffusion and stable high-rate capacities as an anode for lithium ion batteries

Guo L., Sun J., Sun X. et al. · Nanoscale Advances · 2019 · 4688-4691

1materials
2samples
2synthesis routes
14measurements
63results
5claims and caveats

Evidence map

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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-CAT nanorod electrodes combine high reversible capacity, rate capability and 200-cycle stability as LIB anodes.

Caveat: Performance is for composite electrodes containing carbon black and CMC, not a neat pressed Ni-CAT framework.

4 · Summary · Fig. 4 · Linked to 4 structured results

Phase AssignmentSupport assessment: High

The hydrothermal product is 1D Ni-CAT nanorods with a layered hexagonal honeycomb Ni-HHTP framework and evenly distributed Ni, O and C.

Caveat: No CIF or Rietveld refinement was supplied; assignment is based on XRD, spectroscopy and microscopy.

2 · Results · Fig. 1; Fig. 2 · Linked to 6 structured results

Structure Property LinkSupport assessment: Medium

The authors attribute fast lithium diffusion to the 1D porous MOF structure, which provides efficient channels for Li+ ions.

Caveat: Mechanistic attribution is interpretive; no direct pore-resolved diffusion measurement is shown.

2 · Results · Fig. 3; Fig. S1 · Linked to 4 structured results

Transport MechanismSupport assessment: High

Ni-CAT nanorod electrodes show fast Li+ diffusion, with discharge DLi on the order of 10^-9 cm2 s-1 and charge DLi on the order of 10^-10 cm2 s-1.

Caveat: The reported values are order-of-magnitude GITT-derived estimates, not direct electronic conductivity measurements.

2 · Results · Fig. 3 · Linked to 3 structured results

Transport MechanismSupport assessment: Medium

Lithium storage mainly involves reversible insertion/de-insertion in organic ligands and pores, with possible contributions from benzene rings, pores and interlaminar space; Ni2+ is preserved and is not the active redox centre.

Caveat: The mechanism is proposed from ex situ/indirect evidence and is described as tentative by the authors.

3 · Results · Fig. 4b; Fig. S4-S6 · Linked to 5 structured results

Material identities

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

MaterialCompositionStructure contextSource
1D conductive Ni-CAT nanorodsBrowse family: Ni₃(HHTP)₂ / Ni–HHTPNi-CAT; Ni(II)-HHTP conductive MOF, exact empirical formula not reportedNi(II) ions coordinated by catecholate oxygens · 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP)2D · PristineLayered M-CAT framework: extended 2D hexagonal honeycomb sheets with c-axis stacking; isolated as one-dimensional nanorods.1 · Introduction/Results

Sample register

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

Show 2 sample records
SampleForm and roleProcessing and geometrySource
Ni-CAT nanorod lithium-ion battery anode electroderesearch_0478__mat__ni_catElectrode · Target Sample · CompositeWorking electrode prepared by mixing Ni-CAT active material, carbon black and CMC at 7:2:1; assembled into 2032 half cells in Ar glovebox.mass loading of ~1 mg cm-22 · Experimental section
As-synthesised Ni-CAT nanorodsresearch_0478__mat__ni_catPowder · Target Sample · Pristine FrameworkHydrothermally prepared Ni-CAT nanorods washed with DI water and acetone.1 · Results · Fig. 1