Qian X., Yin Y., Lu Y. et al. · Journal of Alloys and Compounds · 2022 · 165191
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 Zn0.3Co2.7S4//AC aqueous HSC demonstrates practical energy-storage potential through 15.58 W h kg-1 energy density and 71.2% retention after 5000 cycles.
Caveat: Device fabrication details for the AC electrode and full cell hardware are incomplete in the main text.
p007 · 4. Conclusions · Fig. 4g,h · Linked to 4 structured results
The combination of Zn incorporation, hollow dodecahedral morphology and sulphur vacancies improves Zn0.3Co2.7S4 specific capacity, rate capability and cycling stability relative to Co3S4 and other Zn:Co ratios.
Caveat: Electrode data are from composite electrodes on nickel foam, so intrinsic material-only transport is not isolated.
p007 · 3.2. Electrochemical measurements · Linked to 6 structured results
The dodecahedral ZnxCo3-x-MOF precursor/template induces formation of hollow ZnxCo3-xS4 nanostructures during solvothermal vulcanisation.
Caveat: The supplied SI text contains only captions for the supplementary morphology images of Co-MOF, Zn0.3Co2.7-MOF and Co3S4 SEM, so the full precursor-to-product morphology sequence cannot be independently checked from local SI renders.
p003 · 3.1. Morphological and structural characterizations · Scheme 1; Fig. 1 · Linked to 3 structured results
Zn0.3Co2.7S4 charge storage is interpreted as predominantly diffusion-controlled/battery-type because anodic and cathodic b-values are near 0.5.
Caveat: The underlying linear correlation in Fig. S11 is not available in the supplied SI text layer; Fig. 3g/h and main text provide the reported values.
p006 · 3.2. Electrochemical measurements · Fig. 3g,h; Fig. S11 · Linked to 3 structured results
Sulphur vacancies in Zn0.3Co2.7S4 are claimed to enhance intrinsic electronic conductivity and charge-transfer kinetics.
Caveat: No direct four-probe or two-probe electrical conductivity value is reported; the conductivity inference is based mainly on EIS and electrochemical behaviour.
p005 · 3.2. Electrochemical measurements · Fig. 3f · Linked to 6 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| activated carbon | AC | unknown · UnknownCommercial/unspecified activated carbon negative electrode material. | p002 · 2.4. Electrochemical measurements |
| Co3S4 | Co3S4Co in cobalt sulphide lattice | 0D · DerivedMOF-derived hollow dodecahedron cobalt sulphide control. | p002 · 2.2. Synthesis of ZnxCo3-xS4 |
| Co-MOF | Co-MOFCo2+ centres from cobalt nitrate hexahydrate · 2-methylimidazolate from 2-methylimidazole | 3D · PristineRegular dodecahedron MOF precursor/control; used to prepare Co3S4 control. | p002 · 2.1. Synthesis of ZnxCo3-x-MOF |
| Zn0.3Co2.7S4//AC hybrid supercapacitor | Zn0.3Co2.7S4//ACZn and Co in positive sulphide electrode; activated carbon negative electrode | unknown · CompositeAsymmetric aqueous hybrid supercapacitor device using Zn0.3Co2.7S4 positive electrode and activated carbon negative electrode. | p006 · 3.2. Electrochemical measurements · Fig. 4a |
| ZnxCo3-x-MOF | ZnxCo3-x-MOF, x = 0, 0.15, 0.3 and 0.45Zn2+ and Co2+ centres from zinc nitrate hexahydrate and cobalt nitrate hexahydrate; Zn partially substitutes Co sites · 2-methylimidazolate from 2-methylimidazole | 3D · PristineDodecahedral bimetallic MOF precursor/template; XRD peaks reported identical with Co-MOF in Fig. S5a. | p002 · 2.1. Synthesis of ZnxCo3-x-MOF |
| hollow ZnxCo3-xS4 | ZnxCo3-xS4, including Zn0.15Co2.85S4, Zn0.3Co2.7S4 and Zn0.45Co2.55S4Zn and Co in bimetallic sulphide lattice | 0D · DerivedMOF-derived hollow dodecahedral bimetallic sulphide nanostructure with sulphur vacancies and ultrathin nanosheets. | p002 · Introduction |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| activated carbon negative electroderesearch_0172__mat__mat_ac | Electrode · Composite Component · Composite | Negative electrode for HSC; detailed AC recipe not provided in main text.not specified | p006 · 3.2. Electrochemical measurements · Fig. 4b |
| Co3S4research_0172__mat__mat_co3s4 | Powder · Pristine Control · Unknown | Co-MOF-derived sulphide after same vulcanisation procedure.hollow shell about 20-40 nm; average particle size about 800 nm | p003 · 3.1. Morphological and structural characterizations · Fig. 1a,b |
| Co3S4 working electrode on nickel foamresearch_0172__mat__mat_co3s4 | Electrode · Pristine Control · Composite | Co3S4 active material electrode prepared with acetylene black and PTFE binder analogously to ZnxCo3-xS4 electrodes.1 x 2 cm precleaned nickel foam | p005 · 3.2. Electrochemical measurements · Fig. 3 |
| Co-MOFresearch_0172__mat__mat_comof | Powder · Pristine Control · Pristine Framework | Prepared under similar coprecipitation conditions without Zn(NO3)2.6H2O. | p002 · 2.1. Synthesis of ZnxCo3-x-MOF |
| Zn0.3Co2.7S4//AC aqueous hybrid supercapacitorresearch_0172__mat__mat_hsc | Electrode · Composite Sample · Composite | Assembled with Zn0.3Co2.7S4 positive electrode and activated carbon negative electrode in 3 M KOH electrolyte. | p002 · 2.4. Electrochemical measurements |
| Zn0.15Co2.85S4research_0172__mat__mat_zcx_s4 | Powder · Target Sample · Mixed Metal | MOF-derived sulphide after solvothermal vulcanisation with thioacetamide. | p005 · 3.2. Electrochemical measurements · Fig. 3a,d,e,f |
| Zn0.15Co2.85S4 working electrode on nickel foamresearch_0172__mat__mat_zcx_s4 | Electrode · Target Sample · Composite | Zn0.15Co2.85S4 active material electrode prepared with acetylene black and PTFE binder.1 x 2 cm precleaned nickel foam | p005 · 3.2. Electrochemical measurements · Fig. 3d,e,f |
| Zn0.3Co2.7S4research_0172__mat__mat_zcx_s4 | Powder · Target Sample · Mixed Metal | MOF-derived hollow sulphide after solvothermal vulcanisation with thioacetamide.hollow shell about 20-40 nm | p003 · 3.1. Morphological and structural characterizations · Fig. 1c-g |
| Zn0.3Co2.7S4 working electrode on nickel foamresearch_0172__mat__mat_zcx_s4 | Electrode · Target Sample · Composite | Zn0.3Co2.7S4, acetylene black and PTFE binder mixed 80:10:10 wt%, coated on nickel foam, dried at 60 deg C overnight and pressed under 10 MPa.1 x 2 cm precleaned nickel foam | p002 · 2.4. Electrochemical measurements |
| Zn0.45Co2.55S4research_0172__mat__mat_zcx_s4 | Powder · Target Sample · Mixed Metal | MOF-derived sulphide after solvothermal vulcanisation with thioacetamide. | p005 · 3.2. Electrochemical measurements · Fig. 3a,d,e,f |
| Zn0.45Co2.55S4 working electrode on nickel foamresearch_0172__mat__mat_zcx_s4 | Electrode · Target Sample · Composite | Zn0.45Co2.55S4 active material electrode prepared with acetylene black and PTFE binder.1 x 2 cm precleaned nickel foam | p005 · 3.2. Electrochemical measurements · Fig. 3d,e,f |
| ZnxCo3-x-MOF series (x = 0.15, 0.3, 0.45)research_0172__mat__mat_zcx_mof | Powder · Target Sample · Mixed Metal | Dried overnight in vacuum at 60 deg C after coprecipitation and washing. | p002 · 2.1. Synthesis of ZnxCo3-x-MOF |