Primary studyCore evidenceTransport Physics

Mo-Based crystal POMOFs with a high electrochemical capacitor performance

Chai D., Xin J., Li B. et al. · Dalton Transactions · 2019 · 13026-13033

4materials
6samples
6synthesis routes
15measurements
43results
4claims 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: Medium

Compounds 1 and 2 are stable during immersion in 1 M H2SO4 for up to 48 h by FTIR evidence.

Caveat: Stability evidence is qualitative FTIR peak coincidence; no post-cycling crystallography or dissolution quantification is reported in this passage.

p007 / article p.13032 · Electrochemical performance · Figure S12 · Linked to 1 structured result

Composite RoleSupport assessment: Medium

The integrated POMOF compound 1 outperforms both isolated parent POM (PMo@TBAB) and bare Cu-MOF controls in the SI capacitance comparison.

Caveat: Control figure lacks exact numeric capacitances and electrode preparation/current density details in the SI text around Figure S9.

p005 · Supporting information - Figure S9 · Figure S9 · Linked to 2 structured results

Structure Property LinkSupport assessment: Medium

Compound 1 gives higher capacitance than compound 2 because its 2D lattice with free TEA/H2O provides more favourable electronic transmission and accessible electrochemical surface area than the 3D host-guest compound 2 structure.

Caveat: Electronic conductivity is inferred from electrochemical behaviour and EIS/Cdl proxies; no four-probe or pellet conductivity value is reported.

p005-p006 / article pp.13030-13031 · Electrochemical performance · Figure 7 · Linked to 6 structured results

Transport MechanismSupport assessment: Medium

Compound 1 has higher redox capacity than compound 2 because its PMo12 cluster is fully Mo(VI), whereas compound 2 contains reduced PMo(VI)9Mo(V)3.

Caveat: The link to capacitance is interpretive; XPS supports oxidation states but does not directly quantify redox capacity in operation.

p005 / article p.13030 · Electrochemical performance · Figure 1; Figure S4 · Linked to 4 structured results

Material identities

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

MaterialCompositionStructure contextSource
compound 1: [CuIH2(C12H12N6)(PMo12O40)].[(C6H15N)(H2O)2]C24H48CuMo12N8O42P; reported as [Cu(I)H2(C12H12N6)(PMo12O40)].[(C6H15N)(H2O)2]Cu(I) centres bridging PMo12 polyoxometalate units and btx linkers · btx = 1,4-bis(triazol-1-ylmethyl)benzene; free triethylamine molecules present2D · PristineTriclinic P-1 2D lattice layers; POM molecules linked to Cu(I)-btx lines, with free TEA and water molecules stacking layers into a 3D supramolecular structure through hydrogen bonds.p003 / article p.13028 · Results and discussion - Structure of compound 1 · Table 1; Figs. 2-3
compound 2: [CuII2(C12H12N6)4(PMoVI9MoV3O39)]C48H48Cu2Mo12N24O39P; reported as [Cu(II)2(C12H12N6)4(PMo(VI)9Mo(V)3O39)]Cu(II)-btx MOF host with reduced PMoVI9MoV3 polyoxometalate chains · btx = 1,4-bis(triazol-1-ylmethyl)benzene3D · PristineMonoclinic P21/c host-guest structure; 1D POM chains encapsulated in a 3D Cu(II)-btx MOF framework.p004 / article p.13029 · Results and discussion - Structure of compound 2 · Figs. 4-5
bare Cu-MOF particleCu-btx MOF; exact empirical formula not reportedCu nodes · btx = 1,4-bis(triazol-1-ylmethyl)benzene3D · PristineBare MOF control prepared by the compound 1 method without POM; characterised by IR spectrum.p005 · Supporting information - Figure S9 and control synthesis · Figure S9; Figure S9-2
PMo@TBAB parent POM controlPMo12/TBAB adduct; precise formula not reportedPMo12 polyoxometalate cluster · tetrabutylammonium bromide counter-ion/adduct; no MOF linker0D · Model SystemParent POM/TBAB control precipitate characterised by IR spectrum.p005-p006 · Supporting information - Figure S9 and control synthesis · Figure S9; Figure S9-1

Sample register

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

Show 6 sample records
SampleForm and roleProcessing and geometrySource
yellow block crystals of compound 1research_0374__mat__compound_1_pomofSingle Crystal · Target Sample · Guest LoadedFiltered, washed with water, and dried at room temperature after hydrothermal synthesis.p002 / article p.13027 · Experimental - Synthesis of compound 1
compound 1-based GCE working electroderesearch_0374__mat__compound_1_pomofElectrode · Target Sample · Composite2.5 mg compound 1 and 2.5 mg acetylene black ground, dispersed in 0.5 mL water, 10 uL deposited on GCE, dried 3 h, then 2.5 uL Nafion deposited and dried 1 h.glassy carbon electrode, 3 mm diameter · 10 uL slurry plus 2.5 uL Nafion; film thickness not reportedp002-p003 / article pp.13027-13028 · Experimental - Preparation of the working electrodes
green block crystals of compound 2research_0374__mat__compound_2_pomofSingle Crystal · Target Sample · Guest LoadedFiltered, washed with water, and dried at room temperature after hydrothermal synthesis.p002 / article p.13027 · Experimental - Synthesis of compound 2
compound 2-based GCE working electroderesearch_0374__mat__compound_2_pomofElectrode · Target Sample · Composite2.5 mg compound 2 and 2.5 mg acetylene black ground, dispersed in 0.5 mL water, 10 uL deposited on GCE, dried 3 h, then 2.5 uL Nafion deposited and dried 1 h.glassy carbon electrode, 3 mm diameter · 10 uL slurry plus 2.5 uL Nafion; film thickness not reportedp002-p003 / article pp.13027-13028 · Experimental - Preparation of the working electrodes
Cu-MOF bare MOF control powderresearch_0374__mat__cu_mof_controlPowder · Pristine Control · Pristine FrameworkPrepared by the compound 1 method without adding POMs; green powder washed with distilled water three times and dried at 80 C for 5 h.p005 · Supporting information - Synthesis of Cu-MOF · Figure S9-2
PMo@TBAB parent POM control powderresearch_0374__mat__pmo_tbab_controlPowder · Pristine Control · Guest LoadedPMo12 aqueous solution combined with TBAB aqueous solution under stirring; precipitate filtered, washed three times with water, and dried at 80 C for 5 h.p005 · Supporting information - Synthesis of PMo@TBAB · Figure S9-1