Primary studyCore evidenceTransport Physics

In Situ Growth of Lithiophilic MOF Layer Enabling Dendrite-free Lithium Deposition

Yin D., Wang Z., Li Q. et al. · iScience · 2020 · 101869

3materials
10samples
7synthesis routes
23measurements
71results
7claims 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

Li@Cu-MOF-30 min improves LFP full-cell capacity retention, rate capability and polarisation relative to Li@Cu-MOF-24 h and Li@Cu controls.

Caveat: Full cells use finite Li-loaded anodes and specific electrolyte/cathode conditions; broader practical-cell validation is not shown.

p009 / journal p.8 · Assessment of Electrochemical Performance in Full Cells · Figure 5 · Linked to 6 structured results

CaveatSupport assessment: High

The influence of coating thickness and in situ interface characterisation remain unresolved.

Caveat: Stated by the authors in the Limitations section.

p010 / journal p.9 · Limitations of the Study

Structure Property LinkSupport assessment: High

The homogeneous Cu-MOF-30 min layer provides uniform nucleation sites and homogeneous Li-ion flux, producing dendrite-free Li deposition.

Caveat: Direct in situ mechanism proof was not provided; authors list in situ characterisation as a limitation.

p010 / journal p.9 · Conclusions · Linked to 4 structured results

Structure Property LinkSupport assessment: High

Polar surfaces and porous structure make Cu-MOF-30 min and Cu-MOF-24 h superwetting to ether electrolyte, which is proposed to facilitate electrolyte flooding and ion diffusion.

Caveat: Wetting is directly measured; its link to Li-ion distribution is supported by Raman/FT-IR evidence but not directly imaged in situ.

p004 / journal p.3 · Synthesis and Characterization · Figures S1 and S2 · Linked to 3 structured results

Structure Property LinkSupport assessment: High

Layer uniformity is critical: the 24 h Cu-MOF layer has higher measured surface area but a bulged/inhomogeneous morphology that worsens long-term cycling relative to Cu-MOF-30 min.

Caveat: The exact coating thickness was not quantified.

p006 / journal p.5 · Li Plating/Stripping Behavior · Figures 2 and 3 · Linked to 4 structured results

Synthesis MechanismSupport assessment: Medium

The in situ Cu-MOF growth strategy can be extended from methanol to ethanol, n-butanol and diethyl ether while maintaining dendrite-free Li deposition behaviour.

Caveat: Text gives threshold electrochemical values for alternate solvents; individual solvent values are mostly figure-level traces.

p009 / journal p.8 · The Universality and Effectiveness of the Synthesis Method · Figure S5 · Linked to 2 structured results

Transport MechanismSupport assessment: Medium

The conductive Cu-MOF layer reduces interface resistance and accelerates charge transfer/ion diffusion, as supported by cited conductivity, EIS fitting, and exchange current density.

Caveat: The conductivity value is cited from literature rather than measured directly in this paper.

p007 / journal p.6 · Li Plating/Stripping Behavior · Table S1 · Linked to 4 structured results

Material identities

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

MaterialCompositionStructure contextSource
Copper foil current collectorCuNot applicable · Not applicableunknown · UnknownCommercial Cu foil used as unmodified control and as the Cu source/substrate for in situ Cu-MOF growth.p015 / SI p.3 · Transparent Methods - Raw Materials
Cu-TCNQ MOF / Cu-MOF thin layerCu-TCNQ coordination framework; exact stoichiometric formula not reportedCu metal centres derived from Cu foil · 7,7,8,8-tetracyanoquinodimethane (TCNQ)unknown · PristineXRD pattern of Cu-MOF-24 h is assigned as consistent with the literature Cu-TCNQ MOF; thin Cu-MOF-30 min layer is inferred from the same in situ Cu-TCNQ chemistry and SEM/optical observations.p003 / journal p.2 · Results and Discussion · Figure S1B
LiFePO4 cathodeLiFePO4Fe in phosphate framework · Not applicableunknown · CompositeCommercial LFP cathode composite used in full cells.p016 / SI p.4 · Transparent Methods - Electrochemical measurements

Sample register

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

Show 10 sample records
SampleForm and roleProcessing and geometrySource
Cu foilresearch_0656__mat__mat_cu_foilElectrode · Pristine Control · UnknownFlattened Cu foil cleaned by 1 M HCl and acetone, then N2 dried; unmodified control for morphology, wetting, Li nucleation, CE, EIS, symmetric-cell and full-cell comparisons.self-supporting Cu foilp015 / SI p.3 · Transparent Methods - In situ synthesis
Cu-MOF-24 hresearch_0656__mat__mat_cu_tcnq_mofElectrode · Target Sample · CompositeDark-green thick Cu-MOF layer on Cu foil after 24 h immersion in TCNQ methanol solution.Cu foil · thick/bulged layer; no numeric thickness reportedp003 / journal p.2 · Results and Discussion · Figures 2B and S1D
Cu-MOF-30 minresearch_0656__mat__mat_cu_tcnq_mofElectrode · Target Sample · CompositeShallow green homogeneous Cu-MOF thin layer on Cu foil after 30 min immersion in TCNQ methanol solution.Cu foil · ultrathin; no numeric thickness reportedp003 / journal p.2 · Results and Discussion · Figures 2A and S1C
Cu-MOF/Bresearch_0656__mat__mat_cu_tcnq_mofElectrode · Target Sample · CompositeCu-MOF coating formed using TCNQ n-butanol solution.Cu foil · thin layer; no numeric thickness reportedp015 / SI p.3 · Transparent Methods - In situ synthesis · Figure S5
Cu-MOF/Dresearch_0656__mat__mat_cu_tcnq_mofElectrode · Target Sample · CompositeCu-MOF coating formed using TCNQ diethyl ether solution.Cu foil · thin layer; no numeric thickness reportedp015 / SI p.3 · Transparent Methods - In situ synthesis · Figure S5
Cu-MOF/Eresearch_0656__mat__mat_cu_tcnq_mofElectrode · Target Sample · CompositeCu-MOF coating formed using TCNQ ethanol solution.Cu foil · thin layer; no numeric thickness reportedp015 / SI p.3 · Transparent Methods - In situ synthesis · Figure S5
LFP cathoderesearch_0656__mat__mat_lfpElectrode · Composite Component · CompositeCommercial LFP/carbon black/PVDF slurry coated on Al foil and dried.Al foil · LFP mass loading about 7 mg cm^-2p016 / SI p.4 · Transparent Methods - Electrochemical measurements
Li@Curesearch_0656__mat__mat_cu_foilElectrode · Pristine Control · CompositeCu foil preloaded or plated with Li for symmetric-cell and full-cell controls.Cu foil · Li loading 2 mAh cm^-2 for symmetric/full-cell tests where statedp007 / journal p.6 · Electrochemical Testing of Li@Cu-MOF Electrode in Symmetric Cells · Figure 4A
Li@Cu-MOF-24 hresearch_0656__mat__mat_cu_tcnq_mofElectrode · Composite Sample · CompositeCu-MOF-24 h electrode after Li deposition/preloading.Cu foil · Li loading 2 mAh cm^-2 for symmetric-cell tests where statedp007 / journal p.6 · Electrochemical Testing of Li@Cu-MOF Electrode in Symmetric Cells · Figure 4A
Li@Cu-MOF-30 minresearch_0656__mat__mat_cu_tcnq_mofElectrode · Composite Sample · CompositeCu-MOF-30 min electrode after Li deposition/preloading.Cu foil · Li loading 2 mAh cm^-2 for symmetric/full-cell tests where statedp007 / journal p.6 · Electrochemical Testing of Li@Cu-MOF Electrode in Symmetric Cells · Figure 4A