Primary studyPeripheral evidenceEnergy Storage

Conductive metal-organic framework flowers facilitate the anchoring and conversion kinetics of polysulfides for lithium‑sulfur batteries

Zhao X., Wang Y., Fan Y. et al. · Journal of Energy Storage · 2023 · 108010

6materials
8samples
5synthesis routes
20measurements
94results
5claims 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

MIL-47/CNT interlayers improve Li-S capacity, long-term cycling, rate performance and high-loading/pouch-cell practicality.

Caveat: Energy density is lower than the no-interlayer battery at standard sulfur loading but superior at higher sulfur loading according to the authors' calculations.

p007-p008 · Results and discussion; Conclusions · Fig. 3; Fig. 6 · Linked to 8 structured results

Composite RoleSupport assessment: High

MIL-47/CNT restrains polysulfide shuttling through strong adsorption and blocking of LPS permeation.

Caveat: Adsorption/permeation observations are partly qualitative colour tests.

p006-p007 · Results and discussion · Fig. 4 · Linked to 5 structured results

Structure Property LinkSupport assessment: High

The flower-like MIL-47 nanosheet morphology exposes active sites and supports fast mass/electron/ion transfer for polysulfide anchoring and conversion.

Caveat: Direct kinetic mechanism is inferred from combined morphology, porosity and electrochemical comparisons rather than directly imaging transport pathways.

p004 · Results and discussion · Fig. 1; Fig. 2 · Linked to 4 structured results

Transport MechanismSupport assessment: High

Conductive MIL-47 and the high-conductivity MIL-47/CNT interlayer accelerate Li-S redox kinetics.

Caveat: CNT support also contributes to composite conductivity; pristine CNT numeric conductivity is blocked by unavailable SI figure body.

p005-p007 · Results and discussion · Fig. S3; Fig. 3f; Fig. 5 · Linked to 5 structured results

Transport MechanismSupport assessment: Medium

Charge/discharge-dependent XRD peak shifts suggest reversible Li+ insertion/extraction in MIL-47 contributes to LSB capacity.

Caveat: The supporting XRD patterns are in SI Fig. S5, whose figure body was not available in the supplied SI text; the claim is extracted from the main-text description.

p005 · Results and discussion · Fig. S5 · Linked to 4 structured results

Material identities

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

MaterialCompositionStructure contextSource
carbon nanotube film supportCNTnone · noneunknown · Unknownsmooth 3D porous CNT film substrate/supportp002-p004 · Experimental; Results and discussion · Fig. S1; Fig. 2h
CNT/S sulfur cathode active materialCNT and sulfur composite, mass ratio 1:3 before slurry formulationnone · noneunknown · Compositesulfur-loaded CNT cathode material for Li-S cellsp002-p003 · Package of LSBs
MIL-47/CNT flower-like MOF interlayerMIL-47(V) coating on carbon nanotube filmV centres in MIL-47 coating · BDC linker from H2BDC2D · Compositeflower-like MIL-47 nanosheet coating grown in situ on CNT film; composite interlayer for Li-S batteriesp002 · Experimental / Results and discussion · Fig. 1
MIL-47/polysulfide adsorption model systemsLi2S2@MIL-47 and Li2S6@MIL-47 modelsMIL-47 V centres interacting with polysulfide S atoms · BDC linker in MIL-47 modelunknown · Model SystemDFT-optimised adsorption configurations showing V-S and Li-O interactionsp005-p006 · Results and discussion · Fig. 4e-f
flower-like MIL-47(V) metal-organic frameworkV-based terephthalate MIL-47; exact empirical formula not statedV-based catalytic centres; V 2p XPS assigned to divalent V in the fresh material and reversible V4+/V3+ redox after cycling · terephthalic acid / 1,4-benzenedicarboxylate (H2BDC precursor)2D · Pristineflower-like MIL-47 composed of loosely and radially arranged nanosheets; XRD peaks indexed to (011), (033), (021), and (031) planesp001-p004 · Introduction; Results and discussion · Fig. 1; Fig. 2
polypropylene separator / no-MOF separator controlPPnone · noneunknown · Unknowncommercial polymer separator controlp003-p004 · Package of LSBs; Results and discussion · Fig. 2i; Fig. 3

Sample register

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

Show 8 sample records
SampleForm and roleProcessing and geometrySource
CNT film support/control interlayerresearch_0855__mat__cnt_filmThin Film · Pristine Control · Derived Carbonpurchased CNT film cut into 19 mm wafers; acid treated before MIL-47 growth for target sampleabout 10 ump002-p004 · Synthesis; Results and discussion · Fig. S1; Fig. 2h
CNT/S cathode disksresearch_0855__mat__cnt_s_cathodeElectrode · Composite Sample · CompositeCNT/S active material mixed with Super P and PVDF in NMP, cast on Al and punched to cathodesAl plate/current collector · 10 mm diameter disks; sulfur loading around 2.0 mg cm-2 for standard cellsp002-p003 · Package of LSBs
0.1 M Li2S6 electrolyte solution for adsorption/permeationresearch_0855__mat__mil47_lps_modelUnknown · Paper Level Unspecified · UnknownLi2S and sulfur reacted in electrolyte at 50 deg C for 24 hp003 · Preparation of LPS solutions
5 mM Li2S8 solution for Li2S precipitation experimentresearch_0855__mat__mil47_lps_modelUnknown · Paper Level Unspecified · Unknown16.8 mg sulfur and 3.5 mg Li2S reacted in 15 mL DOL/DME 1:1 at 55 deg Cp003 · Preparation of LPS solutions
flower-like MIL-47/CNT interlayerresearch_0855__mat__mil47_cntElectrode · Target Sample · Compositein situ hydrothermal MIL-47 growth on vertically immersed CNT wafer; washed with water/ethanol and vacuum dried at 60 deg C overnightacid-treated CNT film wafer, 19 mm diameter · MOF coating about 10 um; CNT film about 10 ump002-p004 · Synthesis of flowery MIL-47 layer; Results and discussion · Fig. 1b-d
DFT adsorption models of Li2S2 and Li2S6 on MIL-47research_0855__mat__mil47_lps_modelModel · Model System · ModelDFT model system; Monkhorst-Pack 3 x 3 x 3 grid and 400 eV cutoffp003-p006 · Theoretical investigation; Results and discussion · Fig. 4e-f
MIL-47 powder / nanosheets collected from autoclaveresearch_0855__mat__mil47_vPowder · Pristine Control · Pristine Frameworkpowder by-product collected by centrifugation, washed with water and ethanol, vacuum dried at 60 deg C overnightnanosheet/petal thickness not reportedp002 · Synthesis of flowery MIL-47 layer
PP separator / without interlayer controlresearch_0855__mat__pp_separatorUnknown · Pristine Control · Unknowncommercial PP separator or no added interlayer in Li-S control cellsp003-p004 · Package of LSBs; Results and discussion · Fig. 2i; Fig. 3; Fig. 5