Singh B., Prakash O., Maiti P. et al. · ACS Applied Nano Materials · 2020 · 6693-6701
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.
CF-2 is the optimum CoFe-PBA-derived sample, reaching 10 mA cm-2 at 250 mV overpotential with the lowest reported Tafel slope in the CF series.
Caveat: Application metric is OER in alkaline electrolyte, not direct electronic conductivity.
6696-6697 · 3.3 · Figure 3 · Linked to 2 structured results
Higher applied potential or longer chronoamperometric treatment can peel catalyst from carbon cloth and reduce OER activity.
S-3-S-4 · Table S1 · Table S1 · Linked to 2 structured results
Fe leaching during CoFe-PBA restructuring leaves a cobalt-rich Fe-Co hydroxide/oxyhydroxide phase; the retained Fe and resulting structure are proposed to aid high oxidation states and charge transport.
Caveat: The paper states no direct correlation between OER activity and Fe content was found because peeling and Co oxidation state also affect activity.
6696 · 3.2 · Linked to 2 structured results
The PBA-to-ultrathin hydroxide/oxyhydroxide transformation can be extended to NiFe-PBA, producing NF-2 nanosheets.
Caveat: NF-2 has poorer OER activity than CF-2, attributed to thicker nanosheets and less favourable active phases.
6698 · 3.3 · Figures S27-S34 · Linked to 3 structured results
Self-supported CoFe-PBA@CC can be electrochemically transformed by anodic chronoamperometry into ultrathin Fe-Co hydroxide/oxyhydroxide nanosheets.
Caveat: The final active material is derived hydroxide/oxyhydroxide, not the intact PBA framework.
6695 · 3.2 · Figure 1 · Linked to 3 structured results
The authors attribute superior OER activity of CF-2 to improved charge transport, low charge-transfer resistance, higher ECSA, and ultrathin morphology.
Caveat: EIS charge-transfer resistance is described qualitatively without a reported numeric Rct.
6697-6698 · 3.3-4 · Figure 3e-f · Linked to 3 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| CoFe-LDH@CC | CoFe layered double hydroxide on carbon clothCo, Fe · hydroxide | 2D · Compositehydrothermally synthesised CoFe LDH nanosheets | 6694 · 2.4 |
| CoFe-PBA@CC | cobalt iron Prussian blue analogue on carbon clothCo, Fe · bridging cyanide/hexacyanoferrate, K3[Fe(CN)6] derived | 3D · Compositecubic Prussian blue analogue, Fm3m, matched JCPDF-01-077-1161 | 6694 · 3.1 · Figure S1 |
| CoHC@CC | cobalt hydroxide carbonate on carbon clothCo · carbonate/hydroxide | 2D · Compositecobalt hydroxide carbonate nanoarrays on carbon cloth | 6694 · 2.1 |
| Fe-Co(OH)2-Co(O)x(OH)y nanosheets | Fe-Co(OH)2-Co(O)x(OH)yFe, Co | 2D · Derivedmixed alpha-Co(OH)2 and beta-Co(O)x(OH)y phases | 6695 · 3.2 · Figure S13 |
| Fe-Ni(OH)2-Ni(O)x(OH)y nanosheets | Fe-Ni(OH)2-Ni(O)x(OH)yFe, Ni | 2D · Derivedmixed beta-Ni(OH)2 and gamma-Ni(O)x(OH)y phases | 6698 · 3.3 · Figures S27-S32 |
| NiFe-PBA@CC | nickel iron Prussian blue analogue on carbon clothNi, Fe · bridging cyanide/hexacyanoferrate, K3[Fe(CN)6] derived | 3D · Compositecubic Prussian blue analogue, Fm3m | S-19 · 6. Figures · Figure S22 |
| NiHC@CC | nickel hydroxide carbonate on carbon clothNi · carbonate/hydroxide | 2D · Compositenickel hydroxide carbonate nanoarrays on carbon cloth | S-2 · 3.1 |
| commercial RuO2 | RuO2Ru | unknown · Unknowncommercial oxide benchmark | S-17 · 6. Figures · Figure S18 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| CF-1research_0485__mat__m_fe_co_hydroxide_oxyhydroxide | Electrode · Target Sample · Mixed Metal | CoFe-PBA@CC transformed at 1.45 V vs RHE for 12 hcarbon cloth | 6694 · 2.3 · Scheme S1; Table S1 |
| CF-2research_0485__mat__m_fe_co_hydroxide_oxyhydroxide | Electrode · Target Sample · Mixed Metal | CoFe-PBA@CC transformed at 1.55 V vs RHE for 12 hcarbon cloth · ~3 nm | 6695 · 3.2 · Figure 1; Figure S15 |
| CF-3research_0485__mat__m_fe_co_hydroxide_oxyhydroxide | Electrode · Target Sample · Mixed Metal | CoFe-PBA@CC transformed at 1.65 V vs RHE for 12 hcarbon cloth | S-3 · Table S1 · Table S1 |
| CF-4research_0485__mat__m_fe_co_hydroxide_oxyhydroxide | Electrode · Target Sample · Mixed Metal | CoFe-PBA@CC transformed at 1.55 V vs RHE for 24 hcarbon cloth | S-3 · Table S1 · Table S1 |
| CF-5research_0485__mat__m_cofe_ldh | Electrode · Pristine Control · Mixed Metal | hydrothermal CoFe-LDH@CC comparison catalystcarbon cloth | 6694 · 2.4 |
| CoFe-PBA@CCresearch_0485__mat__m_cofe_pba | Electrode · Pristine Control · Composite | self-supported PBA before chronoamperometric activationcarbon cloth | 6694 · 2.2 |
| CoHC@CCresearch_0485__mat__m_cohc | Electrode · Pristine Control · Composite | hydrothermally deposited cobalt hydroxide carbonate templatecarbon cloth | 6694 · 2.1 |
| NF-2research_0485__mat__m_fe_ni_hydroxide_oxyhydroxide | Electrode · Target Sample · Mixed Metal | NiFe-PBA@CC transformed at 1.55 V vs RHE for 12 hcarbon cloth · ~6 nm | S-23 · 6. Figures · Figure S30 |
| NiFe-PBA@CCresearch_0485__mat__m_nife_pba | Electrode · Composite Component · Composite | self-supported NiFe-PBA before CA treatmentcarbon cloth | S-2 · 3.2 |
| NiHC@CCresearch_0485__mat__m_nihc | Electrode · Pristine Control · Composite | hydrothermally deposited nickel hydroxide carbonate templatecarbon cloth | S-2 · 3.1 |
| commercial RuO2research_0485__mat__m_ruo2 | Electrode · Pristine Control · Unknown | commercial OER benchmark | S-17 · 6. Figures · Figure S18 |