Wu Y., Zhang K., Wang H. et al. · ACS Applied Energy Materials · 2024 · 12027-12035
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.
NiCo-HHTP enables more durable Li-O2 battery cycling in air than Co-HHTP, Ni-HHTP and KB controls.
Caveat: Air cycling uses application-level composite cathodes, not pristine standalone MOF transport devices.
12033 (p007) · 3. Results and Discussion · Figure 7b · Linked to 4 structured results
The authors propose extending the bimetallic-over-monometallic strategy to high-entropy cMOF materials to tune active-centre electronic structure.
Caveat: This is a forward-looking claim; no high-entropy cMOF was synthesised or tested here.
12033 (p007) · 4. Conclusions · Linked to 2 structured results
NiCo-HHTP provides more reversible decomposition of LiOH and Li2CO3 than monometallic M-HHTP cathodes.
Caveat: Some decomposition efficiencies are reported with approximate signs and preloaded electrodes are model tests on nickel mesh.
12032 (p006) · 3. Results and Discussion · Figures 6 and S20-S21 · Linked to 3 structured results
Bimetallic NiCo-HHTP outperforms monometallic Co-HHTP and Ni-HHTP, attributed to synergistic effects between Ni and Co centres.
Caveat: Synergy is inferred from comparative performance; the paper does not isolate every electronic-structure contribution experimentally.
12030 (p004) · 3. Results and Discussion · Figure 3a · Linked to 4 structured results
M-HHTP is presented as a conductive triphenylene-based 2D framework where pi-d full conjugation and stacked planes favour electron transport and surface reactions.
Caveat: No direct electrical conductivity measurement for these exact samples is reported in this paper; conductivity is inferred from material class and electrochemical/EIS behaviour.
12029 (p003) · 3. Results and Discussion · Figure 1 · Linked to 2 structured results
M-HHTP cathodes promote LiOH formation during discharge in humid oxygen, while catalyst-free KB forms crystalline Li2O2.
Caveat: XPS also detects minor Li2CO3 byproduct on discharged M-HHTP cathodes.
12031 (p005) · 3. Results and Discussion · Figures 4-5 · Linked to 2 structured results
NiCo-HHTP gives lower charge-transfer resistance and more efficient charge transfer than controls in EIS comparisons.
Caveat: No fitted equivalent-circuit values are reported; evidence is qualitative from EIS trends.
12032 (p006) · 3. Results and Discussion · Figures S23-S24 · Linked to 1 structured result
Moisture is a crucial proton source for LiOH formation: lower humidity gives mixed Li2O2/LiOH and dry O2 gives predominantly Li2O2.
Caveat: Humidity values are approximate and product assignments are based on ex situ XRD.
12032 (p006) · 3. Results and Discussion · Figures S14-S15 · Linked to 2 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Co-HHTPBrowse family: Co₃(HHTP)₂ / Co–HHTP | M-HHTP, M = CoCo centres; XPS assigns Co2+/Co3+ · 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP) | 2D · PristineMonometallic conductive 2D M-HHTP framework with hexagonal rod morphology and XRD peaks matching the M-HHTP family. | 12027 (p001) · Abstract |
| Ketjen Black carbon cathode control | KB/PTFE carbon cathode | unknown · CompositeCatalyst-free conductive carbon control cathode. | 12028 (p002) · 2.3 Preparation of Electrodes |
| LiFePO4 counter electrode | LiFePO4/KB/PTFEFe in LiFePO4 | unknown · CompositeNon-MOF lithium iron phosphate electrode used to replace Li metal during cycling tests. | 12033 (p007) · 3. Results and Discussion · Figure 7 |
| Ni1Co2-HHTPBrowse family: Ni/Co–HHTP family | NixCoy-HHTP with Ni:Co feed ratio 1:2bimetallic Ni and Co centres · 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP) | 2D · PristineBimetallic M-HHTP optimisation variant; detailed structure assumed from same M-HHTP synthesis family. | S2 (p002) · Figure S1 caption · Figure S1 |
| Ni2Co1-HHTPBrowse family: Ni/Co–HHTP family | NixCoy-HHTP with Ni:Co feed ratio 2:1bimetallic Ni and Co centres · 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP) | 2D · PristineBimetallic M-HHTP optimisation variant; detailed structure assumed from same M-HHTP synthesis family. | S2 (p002) · Figure S1 caption · Figure S1 |
| Ni-HHTPBrowse family: Ni₃(HHTP)₂ / Ni–HHTP | M-HHTP, M = NiNi centres; XPS assigns Ni2+/Ni3+ · 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP) | 2D · PristineMonometallic conductive 2D M-HHTP framework with hexagonal rod morphology and XRD peaks matching the M-HHTP family. | 12027 (p001) · Abstract |
| NiCo-HHTPBrowse family: Ni/Co–HHTP family | M-HHTP, M = Ni/Co; optimised feed ratio Ni1Co1-HHTPbimetallic Ni and Co centres; XPS assigns Ni2+/Ni3+ and Co2+/Co3+ · 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP) | 2D · PristineTriphenylene-based conductive 2D MOF; metal ions coordinated by HHTP oxygen atoms, forming pi-d conjugated parallel building units stacked by van der Waals interactions. | 12027 (p001) · Abstract |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| Co-HHTP/KB/PTFE gas cathoderesearch_0578__mat__mat_co_hhtp | Electrode · Composite Sample · Composite | Same cathode fabrication procedure as NiCo-HHTP cathode.carbon paper · 12 mm disk; active material loading about 0.45 mg cm-2 and about 0.5 mg total | 12028 (p002) · 2.3 Preparation of Electrodes · Figures 3-7 |
| as-synthesised Co-HHTP powderresearch_0578__mat__mat_co_hhtp | Powder · Pristine Control · Pristine Framework | Prepared by the same hydrothermal procedure with only cobalt precursor; washed and vacuum-dried. | 12028 (p002) · 2.2 Synthesis of cMOF Catalysts · Figure 2 |
| KB/PTFE gas cathoderesearch_0578__mat__mat_kb_control | Electrode · Pristine Control · Composite | KB/PTFE = 90:10 wt %, otherwise fabricated by the same film procedure.carbon paper · 12 mm disk | 12028 (p002) · 2.3 Preparation of Electrodes · Figures 3-7 |
| comparative M-HHTP and KB cathode setresearch_0578__mat__mat_nico_hhtp | Electrode · Paper Level Unspecified · Composite | Set of NiCo-HHTP, Co-HHTP, Ni-HHTP and KB cathodes used in shared electrochemical figures.carbon paper | 12030 (p004) · 3. Results and Discussion · Figure 3 |
| comparative M-HHTP powder setresearch_0578__mat__mat_nico_hhtp | Powder · Paper Level Unspecified · Unknown | Set of NiCo-HHTP, Co-HHTP and Ni-HHTP powders used in shared characterisation figures. | 12029 (p003) · 3. Results and Discussion · Figure 2 |
| LiOH- or Li2CO3-preloaded M-HHTP electrodesresearch_0578__mat__mat_nico_hhtp | Electrode · Paper Level Unspecified · Composite | Catalyst mixed with LiOH or Li2CO3 at 3:1 mass ratio with PTFE in isopropanol and coated onto nickel mesh.nickel mesh · LiOH or Li2CO3 loading about 2 mg cm-2 | 12028 (p002) · 2.4 Cell Assembly and Electrochemical Measurements · Figures S20-S21 |
| Ni1Co2-HHTP optimisation cathoderesearch_0578__mat__mat_ni1co2_hhtp | Electrode · Composite Sample · Composite | Optimisation powder used as catalyst in Li-O2 cathode; exact electrode fabrication presumed identical to M-HHTP cathodes.carbon paper | S2 (p002) · Figure S1 caption · Figure S1 |
| Ni1Co2-HHTP optimisation powderresearch_0578__mat__mat_ni1co2_hhtp | Powder · Pristine Control · Mixed Metal | Feed-ratio optimisation variant; exact precursor amounts not separately reported. | S2 (p002) · Figure S1 caption · Figure S1 |
| Ni2Co1-HHTP optimisation cathoderesearch_0578__mat__mat_ni2co1_hhtp | Electrode · Composite Sample · Composite | Optimisation powder used as catalyst in Li-O2 cathode; exact electrode fabrication presumed identical to M-HHTP cathodes.carbon paper | S2 (p002) · Figure S1 caption · Figure S1 |
| Ni2Co1-HHTP optimisation powderresearch_0578__mat__mat_ni2co1_hhtp | Powder · Pristine Control · Mixed Metal | Feed-ratio optimisation variant; exact precursor amounts not separately reported. | S2 (p002) · Figure S1 caption · Figure S1 |
| Ni-HHTP/KB/PTFE gas cathoderesearch_0578__mat__mat_ni_hhtp | Electrode · Composite Sample · Composite | Same cathode fabrication procedure as NiCo-HHTP cathode.carbon paper · 12 mm disk; active material loading about 0.45 mg cm-2 and about 0.5 mg total | 12028 (p002) · 2.3 Preparation of Electrodes · Figures 3-7 |
| as-synthesised Ni-HHTP powderresearch_0578__mat__mat_ni_hhtp | Powder · Pristine Control · Pristine Framework | Prepared by the same hydrothermal procedure with only nickel precursor; washed and vacuum-dried. | 12028 (p002) · 2.2 Synthesis of cMOF Catalysts · Figure 2 |
| NiCo-HHTP/KB/PTFE gas cathoderesearch_0578__mat__mat_nico_hhtp | Electrode · Composite Sample · Composite | KB, catalyst powder and 60 wt % PTFE dispersion in water kneaded at 60:30:10 mass ratio, rolled into a thin film, punched, pressed onto carbon paper, dried in vacuo at 60 C for 12 h.carbon paper · 12 mm disk; active material loading about 0.45 mg cm-2 and about 0.5 mg total | 12028 (p002) · 2.3 Preparation of Electrodes · Figures 3-7 |
| as-synthesised NiCo-HHTP powderresearch_0578__mat__mat_nico_hhtp | Powder · Target Sample · Mixed Metal | Hydrothermally prepared precipitate; centrifuged, washed with water and ethanol, dried in a vacuum oven at 50 C. | 12028 (p002) · 2.2 Synthesis of cMOF Catalysts · Figure 1 |