Yang F., Xie J., Liu X. et al. · Small · 2021 · 2007085
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.
D-ZIF used as a Zn-air battery air cathode provides high open-circuit voltage and stable long-term charge-discharge cycling.
Caveat: Solid-state battery fabrication details are incomplete.
6 · 3. Conclusion · Figure 6; Figure S7 · Linked to 5 structured results
D-ZIF shows improved ORR activity compared with pristine ZIF, including earlier onset potential, higher half-wave potential, lower Tafel slope and higher current density.
Caveat: D-ZIF still has lower half-wave potential and current density than Pt/C according to the authors.
3 · 2. Result and Discussion · Figure 4 · Linked to 5 structured results
Low-temperature air treatment removes weakly bonded imidazole molecules while retaining the ZIF framework, creating unsaturated metal sites.
Caveat: The exact concentration of linker defects or unsaturated sites is not quantified.
3 · 2. Result and Discussion · Figures 2-3 · Linked to 5 structured results
Missing linkers have little effect on OER activity, with ZIF and D-ZIF showing similar OER overpotentials and Tafel slopes.
Caveat: OER is reported mainly in the SI and discussed briefly in the main text.
4 · 2. Result and Discussion · Figure S6 · Linked to 4 structured results
The ORR enhancement is attributed to increased intrinsic activity of metal sites and improved electron-transfer capability/electrical conductivity after defect introduction.
Caveat: No direct electronic conductivity measurement is reported; evidence is inferred from electrochemical kinetics and impedance.
4 · 2. Result and Discussion · Figure 5a · Linked to 4 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| Co/Zn-ZIF-L nanosheet array (ZIF) | Co/Zn(mim)2.(Hmim)1/2.(H2O)3/2 or C10H16N5O3/2 (Zn/Co)mixed Co/Zn metal centres with metal-N4 tetrahedral geometry · 2-methylimidazolate / imidazolate; one free imidazolate molecule in the repeating unit | 2D · PristineLeaf-shaped zeolitic imidazolate framework, ZIF-L type, with 2D layer network along the ab plane stacked along c. | 2 · 2. Result and Discussion · Figure 1 |
| linker-deficient Co/Zn-ZIF-L nanosheet array (D-ZIF) | linker-deficient Co/Zn(mim)2.(Hmim)1/2.(H2O)3/2-derived frameworkmixed Co/Zn metal centres with unsaturated metal sites induced by linker loss · 2-methylimidazolate / imidazolate with partial imidazole linker defects | 2D · PristineThermally treated ZIF-L retaining the ZIF framework but with lower crystallinity and missing imidazole molecules. | 2 · 2. Result and Discussion · Figures 1-2 |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| liquid Zn-air battery with D-ZIF air cathoderesearch_0091__mat__mat_d_cozn_zif_l | Electrode · Composite Sample · Composite | self-standing D-ZIF catalyst on Ni foam used as air electrode with gas diffusion and waterproof layer; 6 M KOH and 0.02 M zinc acetate electrolyteNi foam air cathode and Zn plate anode · Zn plate 0.3 mm | 6 · 2. Result and Discussion · Figure 6 |
| D-ZIF linker-deficient nanosheet array on Ni foamresearch_0091__mat__mat_d_cozn_zif_l | Electrode · Target Sample · Mixed Metal | ZIF nanosheet arrays thermally treated in air at 200 C for 2 hNi foam | 2 · 2. Result and Discussion · Figure 1d,e; Figure S1 |
| solid-state Zn-air battery with D-ZIF air cathoderesearch_0091__mat__mat_d_cozn_zif_l | Electrode · Composite Sample · Composite | solid-state Zn-air batteries assembled with D-ZIF catalyst; detailed cell recipe not reported in the main text or SI | 6 · 2. Result and Discussion · Figure S7 |
| liquid Zn-air battery with ZIF air cathoderesearch_0091__mat__mat_cozn_zif_l | Electrode · Composite Sample · Composite | self-standing ZIF catalyst on Ni foam used as air electrode with gas diffusion and waterproof layer; 6 M KOH and 0.02 M zinc acetate electrolyteNi foam air cathode and Zn plate anode · Zn plate 0.3 mm | 7 · Assembling of Liquid Zn-Air Battery · Figure 6a |
| ZIF nanosheet array on Ni foamresearch_0091__mat__mat_cozn_zif_l | Electrode · Pristine Control · Mixed Metal | as-synthesised by aqueous Co/Zn nitrate and 2-methylimidazole reaction at 60 C; washed with deionised water and dried overnight at 60 CNi foam · about 150-200 nm per nanosheet | 2 · 2. Result and Discussion · Figure 1b,c |