Zhou Z., Mahmood N., Zhang Y. et al. · Journal of Energy Chemistry · 2017 · 1223-1230
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.
CoP@PNC acts as a bifunctional catalyst for overall alkaline water splitting and outperforms the Pt/C//IrO2 benchmark at 10 and 100 mA cm-2 in the reported test.
Caveat: Benchmark comparison is based on reported two-electrode tests in 1 M KOH; SI Table S6 contains the 10 mA cm-2 comparison value.
p007 / article p.1229 · Water splitting · Figure 7 · Linked to 5 structured results
Adding carbon black markedly improves bare CoP but only slightly improves CoP@PNC, consistent with CoP@PNC already having high inherent conductivity.
p005 / article p.1227 · HER acidic media · Figure 4 · Linked to 7 structured results
The product is a hybrid of CoP nanoparticles and P,N co-doped carbon rather than residual MOF precursor.
Caveat: SI figures/tables that support impurity checks and composition are missing locally.
p004 / article p.1226 · Physico-chemical characters · Figures 1-3 · Linked to 5 structured results
Embedding CoP nanoparticles in P,N co-doped carbon greatly increases electrical conductivity and supports high HER/OER activity without requiring external carbon black.
Caveat: Conductivity method details are limited to pressed-slice multimeter measurement.
p004-p006 / article pp.1226-1228 · Results and discussion · Figures 4-6 · Linked to 6 structured results
During OER, the surface of CoP partially transforms to oxides, hydroxides, and cobalt phosphate species that are proposed as active OER sites.
Caveat: Post-OER data identify reconstructed surface species, but the active-site assignment is inferred from literature and XPS/TEM rather than directly operando.
p006-p007 / article pp.1228-1229 · OER alkaline media · Figures S9-S10 cited · Linked to 4 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Carbon black additive | C | unknown · Model SystemCommercial conductive carbon additive used at 10 wt% in selected catalyst inks. | p003-p005 / article pp.1225-1227 · Electrochemical measurements; HER in acidic media · Section 2.3; Figure S6 cited |
| Co-MOF precursor, shown as ZIF-67Browse family: ZIF-67 / Co(mIm)₂ | Co-based imidazolate MOF; exact formula not reported in main textCo ions · N-containing organic ligand; Scheme 1 depicts a methylimidazole ligand | 3D · PristineCo-MOF precursor converted to CoP nanoparticles and P,N co-doped carbon during phosphidation/carbonisation; Scheme 1 labels the precursor as ZIF-67. | p002 / article p.1224 · Introduction; Experimental · Scheme 1; Section 2.1 |
| CoP polyhedrons / CoP control | CoPOrthorhombic cobalt phosphide | 0D · DerivedControl cobalt phosphide material made from Co-MOF precursor using reported procedures. | p002 / article p.1224 · Experimental · Section 2.1 |
| CoP@PNC | CoP nanoparticles embedded in P and N co-doped carbonOrthorhombic cobalt phosphide nanoparticles derived from Co ions · Carbonised N-containing organic ligands from Co-MOF precursor | 3D · DerivedHybrid of crystalline orthorhombic CoP nanoparticles embedded in P and N co-doped graphitic carbon matrix. | p001 / article p.1223 · Abstract |
| Commercial IrO2 | IrO2Ir oxide | unknown · PristineCommercial OER benchmark catalyst. | p003 / article p.1225 · Electrochemical measurements · Section 2.3 |
| Commercial Pt/C | Pt/C, 10 wt% PtPt nanoparticles | unknown · CompositeCommercial noble-metal HER benchmark. | p003 / article p.1225 · Electrochemical measurements · Section 2.3 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Carbon black controlresearch_0283__mat__mat_carbon_black | Electrode · Pristine Control · Model | Carbon black-only comparison electrode.glassy carbon electrode | p005 / article p.1227 · HER in acidic media · Figure S6 cited |
| As-synthesised Co-MOF precursorresearch_0283__mat__mat_co_mof_zif67_precursor | Powder · Composite Component · Pristine Framework | Co-MOF precursor used for CoP@PNC phosphidation/carbonisation. | p002 / article p.1224 · Experimental · Scheme 1; Section 2.1 |
| CoP polyhedron controlresearch_0283__mat__mat_cop_control | Powder · Pristine Control · Unknown | CoP control synthesised from Co-MOF precursor by a reported procedure. | p002 / article p.1224 · Experimental · Section 2.1 |
| CoP/Cresearch_0283__mat__mat_cop_control | Electrode · Composite Sample · Composite | CoP polyhedron control mixed with 10 wt% carbon black in catalyst ink.glassy carbon electrode · 5 uL ink on 3 mm diameter GCE; catalyst loading 0.35 mg cm-2 | p005 / article p.1227 · HER in acidic media · Figure 4 |
| CoP@PNCresearch_0283__mat__mat_cop_pnc | Powder · Target Sample · Derived Carbon | Co-MOF-derived powder after phosphidation/carbonisation, washing, and drying. | p002 / article p.1224 · Experimental · Section 2.1 |
| CoP@PNC after 10 h OER in 1 M KOHresearch_0283__mat__mat_cop_pnc | Electrode · Target Sample · Derived Carbon | Post-electrocatalytic OER sample after 10 h operation in 1 M KOH.glassy carbon electrode | p010 · Supporting Information · Figures S9-S10 |
| CoP@PNC/Cresearch_0283__mat__mat_cop_pnc | Electrode · Composite Sample · Composite | CoP@PNC ink with additional 10 wt% carbon black.glassy carbon electrode · 5 uL ink on 3 mm diameter GCE; catalyst loading 0.35 mg cm-2 | p003 / article p.1225 · Electrochemical measurements · Section 2.3 |
| CoP@PNC//CoP@PNC two-electrode electrolyserresearch_0283__mat__mat_cop_pnc | Electrode · Target Sample · Derived Carbon | CoP@PNC used as both anode and cathode in 1 M KOH.nickel foam · 0.5 x 0.5 cm nickel foams; high catalyst loading mass 2 mg cm-2 | p003 and p007 / article pp.1225,1229 · Electrochemical measurements; water splitting · Figure 7 |
| Commercial IrO2 electroderesearch_0283__mat__mat_iro2 | Electrode · Pristine Control · Unknown | Commercial IrO2 dropped on GCE.glassy carbon electrode · same loading as catalysts; typically 0.35 mg cm-2 | p003 / article p.1225 · Electrochemical measurements · Section 2.3 |
| Commercial Pt/C electroderesearch_0283__mat__mat_ptc | Electrode · Pristine Control · Composite | Commercial Pt/C (10 wt%) dropped on GCE.glassy carbon electrode · same loading as catalysts; typically 0.35 mg cm-2 | p003 / article p.1225 · Electrochemical measurements · Section 2.3 |
| Pt/C//IrO2 two-electrode benchmarkresearch_0283__mat__mat_ptc | Electrode · Pristine Control · Composite | Pt/C and IrO2 noble-metal benchmark couple in 1 M KOH.nickel foam | p007 / article p.1229 · Water splitting · Figure 7 |