Kumar T., Karmakar A., Halder A. et al. · Energy and Fuels · 2022 · 2722-2730
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.
CP 1 has higher OER activity than CP 2, especially lower overpotential and better current retention.
Caveat: OER data are application measurements on Nafion/GCE catalyst films, not intrinsic bulk conductivity measurements.
2727 · 4 Conclusions · Linked to 6 structured results
The prepared CPs were directly used in pristine form for OER electrocatalysis without pyrolysis or post-synthetic modification.
Caveat: Electrode testing still requires Nafion binder and GCE deposition.
2727 · 4 Conclusions · Linked to 2 structured results
The additional pi-conjugated mesaconate/carboxylate linker in CP 1 is proposed to enhance proton transfer, stabilise higher Ni oxidation states, and ease NiOOH formation.
Caveat: Mechanistic attribution is inferred from comparative electrochemistry and post-OER XPS/PXRD, not from direct in situ identification of all intermediates.
2727 · 4 Conclusions · Linked to 4 structured results
The authors infer higher electronic conductivity of CP 1 than CP 2 from the lower EIS charge-transfer resistance.
Caveat: No four-probe or direct bulk electrical conductivity value is reported; the conductivity statement is based on electrochemical impedance of catalyst electrodes.
2726 · 3.1 Electrocatalytic Water Oxidation · Figure 4D · Linked to 3 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| CP 1; [Ni(MCA)(bipy)(H2O)2]n | [Ni(MCA)(bipy)(H2O)2]n; empirical formula C16H16N2NiO6Ni(II) · MCA = mesaconate from mesaconic acid; bipy = 4,4'-bipyridine | 2D · PristineOrthorhombic Cmca; 2,4-connected binodal net; rectangular channels along c-axis. | 2722 · Abstract |
| CP 2; {[Ni(bipy)3(H2O)2].(bipy).(ClO4)2} | {[Ni(bipy)3(H2O)2].(bipy).(ClO4)2}Ni(II) · 4,4'-bipyridine | unknown · PristinePreviously reported Ni(II)-bipyridine coordination polymer; used as mono-linker comparison. | 2722 · Abstract |
| RuO2 benchmark catalyst | RuO2Ru | unknown · UnknownCommercial/benchmark oxide catalyst; not a MOF or CP. | 2724 · Results and Discussion · Figure 4A |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| as-synthesised CP 1 blue needle-shaped crystalsresearch_0370__mat__cp1 | Single Crystal · Target Sample · Pristine Framework | Filtered and washed after solvothermal synthesis. | 2723 · 2.2 Synthesis |
| CP 1 catalyst ink drop-cast on glassy carbon electroderesearch_0370__mat__cp1 | Electrode · Target Sample · Pristine Framework | 4 mg CP dispersed in isopropyl alcohol/Nafion; 5 uL drop-cast; catalyst loading 0.20 mg cm-2.glassy carbon electrode | 2723 · 2.5 Electrochemical Measurements |
| as-synthesised CP 2 blue crystalsresearch_0370__mat__cp2 | Single Crystal · Pristine Control · Pristine Framework | Filtered and washed after hydrothermal synthesis. | 2723 · 2.3 Synthesis |
| CP 2 catalyst ink drop-cast on glassy carbon electroderesearch_0370__mat__cp2 | Electrode · Pristine Control · Pristine Framework | 4 mg CP dispersed in isopropyl alcohol/Nafion; 5 uL drop-cast; catalyst loading 0.20 mg cm-2.glassy carbon electrode | 2723 · 2.5 Electrochemical Measurements |
| RuO2 benchmark electroderesearch_0370__mat__ruo2_benchmark | Electrode · Pristine Control · Unknown | Benchmark catalyst measured under the OER comparison conditions.glassy carbon electrode | 2724 · Results and Discussion · Figure 4 |