Liu W., Liang Y., Huo M. et al. · Nano Research · 2025 · 94907195
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.
The work presents a molecular MOF-based ORR catalyst route without pyrolytic heat treatment.
Caveat: The target powder synthesis does not report pyrolysis; however EC-300J carbon black is added for electrochemical electrodes.
6 · Conclusions · Linked to 3 structured results
Co-MOF-74-HATP@EC-300J functions as a bifunctional air electrode/cathode context, giving OER overpotential of 320 mV and ZAB peak power density of 96.6 mW cm-2.
Caveat: ZAB and OER measurements are composite-electrode/application tests, not pristine-framework conductivity measurements.
5-6 · Results and discussion; Conclusions · Fig. 4; Figs. S14-S19 · Linked to 5 structured results
The Co-O5-N Co-MOF-74-HATP@EC-300J catalyst has faster ORR kinetics and higher ORR half-wave potential than Co-MOF-74@EC-300J.
Caveat: Electrocatalytic tests use EC-300J carbon black, so application values are for the composite electrode rather than neat powder.
4 · Results and discussion · Fig. 3(b)-3(c) · Linked to 5 structured results
Ligand engineering changes the cobalt first coordination shell from Co-O5 in Co-MOF-74 to Co-O5-N in Co-MOF-74-HATP.
Caveat: Main-text FT distances and SI fitted bond lengths are different EXAFS representations; both are preserved as reported.
4 · Results and discussion · Fig. 2; Table S1 · Linked to 4 structured results
HATP enters the channels/pores of Co-MOF-74, causing lattice expansion and a large decrease in the N2 adsorption-derived surface-area/pore metric.
Caveat: The article labels the N2-derived metric as pore volume but reports m2 g-1.
2 · Results and discussion · Fig. S5-S6 · Linked to 4 structured results
HATP modification is claimed to improve electronic conductivity/charge transfer through enhanced graphitisation, Co electronic-state modulation and lower electrochemical charge resistance.
Caveat: No standalone electrical conductivity value, film/pellet geometry, or transport device is reported.
3-5 · Results and discussion · Fig. 2(c), Fig. 3(d), Fig. S7 · Linked to 4 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Co-MOF-74Browse family: Co₂(DOBDC) / Co–MOF-74 / CPO-27-Co | Co-MOF-74; cobalt 2,5-dihydroxyterephthalate MOFCo active sites, assigned as Co-O5 coordination environment · 2,5-dihydroxyterephthalic acid / H4DOBDC-derived linker | 3D · PristineMOF-74/CPO-27 type framework; hexagonal prism morphology; XRD peaks assigned to (110), (300), and (511). | 2 · Experimental; Results and discussion · Fig. 1(a), Fig. 1(f) |
| Co-MOF-74@EC-300J composite catalyst | Co-MOF-74 mixed with EC-300J carbon blackCo-O5 sites from Co-MOF-74 · DOBDC framework; EC-300J carbon black additive | 3D · CompositePristine Co-MOF-74 physically combined with EC-300J carbon black for ORR comparison. | 4 · Results and discussion · Fig. 3 |
| Co-MOF-74-HATP | Co-MOF-74-HATPCo active sites modified from Co-O5 to Co-O5-N coordination · Co-MOF-74 DOBDC framework plus hexaaminotriphenylene (HATP) | 3D · CompositeHATP-ligand-engineered Co-MOF-74 retaining the MOF-74 crystal structure with slight low-angle XRD shift and roughened hexagonal-prism morphology. | 2 · Results and discussion · Fig. 1 |
| Co-MOF-74-HATP@EC-300J composite catalyst | Co-MOF-74-HATP mixed with EC-300J carbon blackCo-O5-N active sites from Co-MOF-74-HATP · DOBDC framework plus HATP; EC-300J carbon black additive | 3D · CompositeHATP-ligand-engineered Co-MOF-74 physically mixed with EC-300J carbon black for ORR/OER and zinc-air-battery electrodes. | 5 · Results and discussion · Fig. 4(a) |
| physical mixture of Co-MOF-74 and HATP | Co-MOF-74 + HATP physical mixtureCo-O5 sites from Co-MOF-74 · DOBDC framework plus uncoordinated HATP in a physical mixture | 3D · CompositeOptical colour-control physical mixture, distinct from self-assembled Co-MOF-74-HATP. | 2 · Supplementary figures · Fig. S1 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Co-MOF-74@EC-300J RRDE electroderesearch_0279__mat__mat_comof74_ec300j | Electrode · Pristine Control · Composite | Catalyst ink from 8 mg Co-MOF-74, 2 mg EC-300J, water/ethanol/Nafion; 15 uL deposited on RRDE with 0.242 mg cm-2 loading.rotating ring disk electrode | 1 · Electrochemical characterizations |
| Co-MOF-74-HATP@EC-300J carbon-cloth OER electroderesearch_0279__mat__mat_comof74_hatp_ec300j | Electrode · Target Sample · Composite | Catalyst ink from 8 mg catalyst and 2 mg EC-300J deposited on carbon cloth with 0.5 mg cm-2 loading.1 x 1 cm2 carbon cloth | 1 · Electrochemical characterizations |
| Co-MOF-74-HATP@EC-300J RRDE electroderesearch_0279__mat__mat_comof74_hatp_ec300j | Electrode · Target Sample · Composite | Catalyst ink from 8 mg Co-MOF-74-HATP, 2 mg EC-300J, water/ethanol/Nafion; 15 uL deposited on RRDE with 0.242 mg cm-2 loading.rotating ring disk electrode | 1 · Electrochemical characterizations |
| Co-MOF-74 mixed with HATP powderresearch_0279__mat__mat_comof74_hatp_physical_mix | Powder · Composite Sample · Composite | Physical mixture used as colour/coordination comparison; exact mixing recipe not reported. | 2 · Supplementary figures · Fig. S1 |
| Co-MOF-74-HATP powderresearch_0279__mat__mat_comof74_hatp | Powder · Target Sample · Guest Loaded | Co-MOF-74 and HATP treated in methanol by ultrasonication then heated at 70 C for 3 h. | 2 · 2.1.3 Synthesis of Co-MOF-74-HATP |
| Co-MOF-74 powderresearch_0279__mat__mat_comof74 | Powder · Pristine Control · Pristine Framework | Solvothermal product, washed with water and ethanol and vacuum dried at 80 C for 1 day. | 2 · 2.1.2 Synthesis of Co-MOF-74 |
| zinc-air battery with Co-MOF-74-HATP@EC-300J air cathoderesearch_0279__mat__mat_comof74_hatp_ec300j | Electrode · Target Sample · Composite | Catalyst loaded on 1 x 1 cm2 carbon paper at 0.6 mg cm-2; electrolyte 6.0 M KOH + 0.2 M Zn(CH3COO)2.carbon paper cathode; zinc sheet/foil anode | 2 · Zinc-air battery performance test |