Liu X., He G., Liu H. et al. · Journal of Alloys and Compounds · 2022 · 162208
Open a family to keep every result attached to its sample, method and conditions.
Paraphrased for this database from the authors’ stated interpretations — never quoted verbatim — and kept separate from reported measurements.
Among this paper's catalyst matrix, Co1Fe1-B-P gives the lowest eta10 and low Rct with durable OER performance in alkaline electrolyte.
Caveat: Best eta10 within Table S2; other literature catalysts in Table S4 are comparison-only and not extracted as first-hand results.
16 · Supporting Information · Table S2 · Linked to 4 structured results
No direct electrical conductivity, Hall mobility, Seebeck coefficient, or thermoelectric measurement is reported for the MOF precursors or derived catalysts.
Caveat: The paper uses charge-transfer resistance from EIS and qualitative mass/charge transport language only.
5 · Results and discussion · Fig. 4d
The target Co1Fe1-B-P is a boron-containing Co/Fe bimetal phosphide with CoP and FeP phases and nanosheet morphology.
Caveat: B incorporation is supported by EDX mapping/XPS rather than crystallographic site refinement.
3 · Results and discussion · Fig. 2, Fig. 3 · Linked to 5 structured results
Co/Fe bimetal MOF precursors retain a ZIF-67-like framework while incorporating both Co and Fe.
Caveat: Co/Fe atomic ratios in EDX differ from precursor solution ratios, attributed by authors to different coordination ability of Co2+ and Fe3+.
3 · Results and discussion · Fig. S2, Table S1 · Linked to 3 structured results
The authors attribute improved OER kinetics to electronic interaction among B, P, Co, and Fe, which changes local electronic configuration and promotes high-oxidation-state active sites.
Caveat: Mechanistic inference is based on XPS shifts and electrochemical trends; no operando spectroscopy is reported.
5 · Results and discussion · Fig. 3 · Linked to 6 structured results
Nanosheet morphology and larger electrochemically active area are claimed to expose active sites and facilitate mass/charge transport.
Caveat: The paper reports EIS Rct and Cdl, not direct electrical conductivity or carrier transport measurements.
1 · Abstract · Linked to 4 structured results
After OER, P and B decrease strongly while O increases, supporting formation of surface oxyhydroxide species as active OER sites.
Caveat: Post-mortem evidence; exact active phase during operation is inferred.
6 · Results and discussion · Table S3, Fig. S20 · Linked to 5 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Boronised Co derived borate | Co-BCo · MOF-derived; original 2-methylimidazole sacrificial template | unknown · DerivedBoronised unary Co-MOF derivative | 2 · 2.3. Synthesis of Co-Fe-B and Co-B |
| Boronised/phosphidised Co derivative | Co-B-PCo · MOF-derived; original 2-methylimidazole sacrificial template | unknown · DerivedUnary Co-B-P derivative; morphology transformed into nanoparticles | 3 · Results and discussion · Fig. S6 |
| Co-MOF precursorBrowse family: ZIF-67 / Co(mIm)₂ | Co 2-methylimidazolate framework, ZIF-67-likeCo · 2-methylimidazole | 3D · PristineXRD peaks match simulated ZIF-67 pattern | 3 · Results and discussion · Fig. S2 |
| Co phosphide | Co-PCo · MOF-derived; original 2-methylimidazole sacrificial template | unknown · DerivedDirect phosphidation unary Co-MOF derivative | 2 · 2.5. Synthesis of Co-Fe-P and Co-P |
| Boronised Co-Fe derived borate | Co-Fe-B; CoB2O4 and Fe(BO2)2 phases reported for Co1Fe1-BCo and Fe · MOF-derived; original 2-methylimidazole sacrificial template | 2D · DerivedTransition-metal borate phase with low crystallinity; nanosheet morphology for selected ratios | 3 · Results and discussion · Fig. S4-S5 |
| Boron-doped cobalt-iron bimetal phosphide nanosheets | Co-Fe-B-P; CoP/FeP with B incorporatedCo and Fe · MOF-derived; original 2-methylimidazole sacrificial template | 2D · DerivedBoron-doped bimetallic phosphide nanosheets; CoP and FeP phases by XRD/SAED | 3 · Results and discussion · Fig. 2, Fig. 3a |
| Co-Fe bimetal MOF precursor | Co1Fe1-MOF, Co1Fe2-MOF, Co2Fe1-MOFCo and Fe · 2-methylimidazole | 3D · PristineZIF-67-like bimetallic MOF; Fe ions replace Co ion sites | 2 · 2.2. Synthesis of Co-Fe bimetal MOFs |
| Co-Fe bimetal phosphide | Co-Fe-P; CoP and FePCo and Fe · MOF-derived; original 2-methylimidazole sacrificial template | unknown · DerivedCoP and FeP phases after direct phosphidation | 3 · Results and discussion · Fig. S9-S10 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Co1Fe1-Bresearch_0494__mat__cofe_b | Nanosheet · Pristine Control · Mixed Metal | Hydrothermal boronation product of Co1Fe1-MOF | 3 · Results and discussion · Fig. 2 and Fig. S5 |
| Co1Fe1-B-Presearch_0494__mat__cofe_b_p | Nanosheet · Target Sample · Doped | Hydrothermal boronation of Co1Fe1-MOF followed by low-temperature phosphidation | 2 · Introduction |
| Co1Fe1-MOFresearch_0494__mat__cofe_mof | Powder · Pristine Control · Mixed Metal | As-synthesised bimetal MOF precursor | 2 · 2.2. Synthesis of Co-Fe bimetal MOFs |
| Co1Fe1-Presearch_0494__mat__cofe_p | Powder · Pristine Control · Mixed Metal | Low-temperature phosphidation product of Co1Fe1-MOF | 3 · Results and discussion · Fig. S5 |
| Co1Fe2-Bresearch_0494__mat__cofe_b | Unknown · Pristine Control · Mixed Metal | Hydrothermal boronation product of Co1Fe2-MOF | 2 · 2.3. Synthesis of Co-Fe-B and Co-B |
| Co1Fe2-B-Presearch_0494__mat__cofe_b_p | Unknown · Pristine Control · Doped | Hydrothermal boronation of Co1Fe2-MOF followed by low-temperature phosphidation | 2 · 2.4. Synthesis of Co-Fe-B-P and Co-B-P |
| Co1Fe2-MOFresearch_0494__mat__cofe_mof | Powder · Pristine Control · Mixed Metal | As-synthesised bimetal MOF precursor | 2 · 2.2. Synthesis of Co-Fe bimetal MOFs |
| Co1Fe2-Presearch_0494__mat__cofe_p | Powder · Pristine Control · Mixed Metal | Low-temperature phosphidation product of Co1Fe2-MOF | 5 · Results and discussion · Fig. S14 |
| Co2Fe1-Bresearch_0494__mat__cofe_b | Nanosheet · Pristine Control · Mixed Metal | Hydrothermal boronation product of Co2Fe1-MOF | 5 · Results and discussion · Fig. S12 |
| Co2Fe1-B-Presearch_0494__mat__cofe_b_p | Nanosheet · Pristine Control · Doped | Hydrothermal boronation of Co2Fe1-MOF followed by low-temperature phosphidation | 3 · Results and discussion · Fig. S6 |
| Co2Fe1-MOFresearch_0494__mat__cofe_mof | Powder · Pristine Control · Mixed Metal | As-synthesised bimetal MOF precursor | 2 · 2.2. Synthesis of Co-Fe bimetal MOFs |
| Co2Fe1-Presearch_0494__mat__cofe_p | Powder · Pristine Control · Mixed Metal | Low-temperature phosphidation product of Co2Fe1-MOF | 2 · 2.5. Synthesis of Co-Fe-P and Co-P |
| Co-Bresearch_0494__mat__co_b | Unknown · Pristine Control · Doped | Hydrothermal boronation product of Co-MOF | 2 · 2.3. Synthesis of Co-Fe-B and Co-B |
| Co-B-Presearch_0494__mat__co_b_p | Powder · Pristine Control · Doped | Boronised Co-MOF derivative followed by low-temperature phosphidation | 3 · Results and discussion · Fig. S6 |
| Co-MOFresearch_0494__mat__co_mof | Powder · Pristine Control · Pristine Framework | As-synthesised MOF precursor, dried at 70 deg C overnight | 2 · 2.2. Synthesis of Co-Fe bimetal MOFs |
| Co-Presearch_0494__mat__co_p | Powder · Pristine Control · Doped | Low-temperature phosphidation product of Co-MOF | 2 · 2.5. Synthesis of Co-Fe-P and Co-P |