Li C., Shi L., Zhang L. et al. · Journal of Materials Chemistry A · 2020 · 369-379
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.
Co-HAB-NSs shows strong alkaline OER performance with 310 mV overpotential at 10 mA cm-2 and 56 mV dec-1 Tafel slope, comparable to or better than RuO2 in the reported metrics.
Caveat: Application measurements are catalyst-film tests on GCE, not standalone device operation.
p005 / article p373 · Electrocatalytic performance · Fig. 4 · Linked to 4 structured results
Co-HAB-NSs has notable electrochemical durability and acid/base chemical stability, attributed to chelation and Co-HAB coordination bonds.
Caveat: Stability evidence is a 10 h electrolysis trace and 5 h acid/base treatment; longer-term operational durability is not shown.
p007 / article p375 · Electrocatalytic performance · Fig. 6d and Fig. 7 · Linked to 3 structured results
Additional NH4OH-first/final experiments and XRD are used to rule out Co3O4 as the catalyst phase.
Caveat: The evidence is based on XRD absence of characteristic peaks; amorphous or trace phases may be below detection.
p009 / article p377 · Synthesis of catalysts · Fig. S12 · Linked to 1 structured result
The ultrathin 2D nanosheet morphology increases surface area, Cdl/ECSA, and intrinsic area-specific OER activity relative to bulk Co-HAB and other controls.
Caveat: Cdl values come from figure annotations; detailed raw CV data were not available.
p007 / article p375 · Electrocatalytic performance · Fig. 6 · Linked to 5 structured results
High electrical conductivity in Co-HAB-NSs is ascribed to electron delocalisation and strong pi-d interaction between Co(II) and HAB.
Caveat: Conductivity is reported for pressed pellets; no uncertainty or anisotropy is provided.
p006 / article p374 · Electrocatalytic performance · Linked to 2 structured results
DFT supports dense Co-HAB active sites and suggests C sites have lower OER overpotentials than Co sites in the conjugated ring.
Caveat: DFT values depend on Hubbard-U choice and idealised model structures; no synthesis route is assigned to model systems.
p008 / article p376 · DFT discussion · Fig. 8 · Linked to 2 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Co-HAB-C | carbonised Co-HAB derivativeCo-containing carbonised residue · carbonised HAB-derived framework | unknown · DerivedCarbonised derivative prepared by heating bulk Co-HAB under Ar; not a pristine coordination polymer. | p009 / article p377 · Synthesis of catalysts |
| Co-HAB coordination polymerBrowse family: Co₃(HAB)₂ / Co–HAB | Co3(hexaaminobenzene)2 / Co3HAB2Co(II) · hexaaminobenzene (HAB) | 2D · Pristinepi-d conjugated cobalt-hexaaminobenzene coordination polymer; planar honeycomb model used for DFT; nanosheet XRD patterns described as amorphous/very weak because of ultrathin nanosheets. | p001 / article p369 · Abstract |
| Co-HAB DFT modelBrowse family: Co₃(HAB)₂ / Co–HAB | Co3HAB2Co · HAB | 2D · Model SystemPlanar honeycomb computational model with Co and C active sites for OER intermediates. | p008 / article p376 · DFT discussion · Fig. 8 |
| hexaaminobenzene precursor | HABhexaaminobenzene | 0D · UnknownOrganic ligand precursor used to synthesise Co-HAB samples. | p009 / article p377 · Synthesis of catalysts · Fig. S1 |
| commercial RuO2 benchmark | RuO2Ru | unknown · UnknownCommercial inorganic OER benchmark. | p004 / article p372 · Electrocatalytic performance · Fig. 4 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| bulk Co-HABresearch_0205__mat__co_hab_framework | Powder · Pristine Control · Pristine Framework | bulk powder dried under vacuum at 80 C overnight | p009 / article p377 · Synthesis of catalysts |
| Co-HAB-Cresearch_0205__mat__co_hab_carbonised | Powder · Pristine Control · Derived Carbon | bulk Co-HAB carbonised at 500 C for 2 h under Ar | p009 / article p377 · Synthesis of catalysts |
| Co-HAB-HNsresearch_0205__mat__co_hab_framework | Nanosheet · Pristine Control · Pristine Framework | hexagonal nanosheets prepared in Teflon autoclave at 40 C for 8 h | p006 / article p374 · Electrocatalytic performance · Fig. 5 |
| Co-HAB@Cresearch_0205__mat__co_hab_model | Model · Model System · Model | DFT model with OER intermediates adsorbed on carbon sites | p008 / article p376 · DFT discussion · Fig. 8b,c,d |
| Co-HAB@Coresearch_0205__mat__co_hab_model | Model · Model System · Model | DFT model with OER intermediates adsorbed on cobalt sites | p008 / article p376 · DFT discussion · Fig. 8a,c,d |
| Co-HAB-NPresearch_0205__mat__co_hab_framework | Powder · Pristine Control · Pristine Framework | nanoparticles prepared in Teflon autoclave at 100 C for 12 h | p009 / article p377 · Synthesis of catalysts |
| Co-HAB-NSsresearch_0205__mat__co_hab_framework | Nanosheet · Target Sample · Pristine Framework | as-prepared ultrathin nanosheets; also pressed into pellets for four-point conductivity and drop-cast on GCE for OER testsabout 4.5 nm average thickness | p003 / article p371 · Structure and morphology · Fig. 2e,f |
| Co-HAB-NSs-2research_0205__mat__co_hab_framework | Nanosheet · Pristine Control · Pristine Framework | prepared by doubling NH4OH amount relative to bulk Co-HAB route; used as comparison nanosheet morphology | p009 / article p377 · Synthesis of catalysts |
| Co-HAB-Sresearch_0205__mat__co_hab_framework | Nanosheet · Pristine Control · Pristine Framework | sheet sample prepared in Teflon autoclave at 70 C for 4 hconsiderable thickness of sheets | p009 / article p377 · Synthesis of catalysts |
| protonated HABresearch_0205__mat__hab_ligand | Powder · Paper Level Unspecified · Unknown | ligand precursor isolated before Co-HAB synthesis | p009 / article p377 · Synthesis of catalysts |
| commercial RuO2research_0205__mat__ruo2_benchmark | Powder · Paper Level Unspecified · Unknown | commercial benchmark catalyst ink drop-cast with same electrochemical protocol where comparedglassy carbon rotating disk electrode for OER tests | p004 / article p372 · Electrocatalytic performance · Fig. 4 |