Quan L., Liu T., Yi M. et al. · Electrochimica Acta · 2018 · 109-116
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 (Ni0.33Co0.67)Se2 CHSs//AC ASC device demonstrates practical supercapacitor relevance with 29.1 Wh kg-1 at 800 W kg-1.
Caveat: Device mass-normalisation basis is not elaborated beyond the formulas in the main text.
115 · 3. Results and discussion · Fig. 6f · Linked to 3 structured results
The authors claim the (Ni0.33Co0.67)Se2 CHSs outperform other reported Ni- and Co-based selenide electrode materials listed in Table S1.
Caveat: Table S1 comparator rows are literature values with different mass loadings and test conditions; they are retained as comparison context, not first-hand measurements.
3-4 · Supplementary data · Table S1 · Linked to 3 structured results
Post-cycling EDS suggests Se decreases, possibly due to irreversible transformation of (Ni0.33Co0.67)Se2 to Ni0.33Co0.67(OH)x.
Caveat: The supporting EDS data are in rendered SI Fig. S6, but no quantitative atomic percentages are reported.
114 · 3. Results and discussion · Fig. S6 · Linked to 1 structured result
The hierarchical complex hollow structure increases active surface area and structural integrity, improving capacitance and cycling stability.
Caveat: Causal link is plausible and supported by control comparison, but not isolated from composition and conductivity changes.
114 · 3. Results and discussion · Fig. 5 · Linked to 4 structured results
During selenization, OH- reacts with Se powder to generate Se2- ions, which exchange with NiCo2O4 to form (Ni0.33Co0.67)Se2.
Caveat: Mechanistic statement is inferred by authors from prior literature and product characterisation.
111 · 3. Results and discussion · Scheme 1 · Linked to 1 structured result
Higher electrical conductivity of the selenide electrode enables rapid electron transfer and contributes to good rate performance.
Caveat: Nyquist plot is qualitative in the rendered SI and no fitted impedance values are reported.
114 · 3. Results and discussion · Fig. S4 · Linked to 2 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| activated carbon | C | unknown · Pristinecommercial activated carbon negative electrode material | 110 · 2.3. Electrochemical measurements |
| Ni-Co-MOF solid spheres | Ni-Co trimesate MOF; exact framework formula not reportedNi and Co · trimesic acid | unknown · Pristinebimetallic Ni-Co-MOF solid spheres used as precursor | 111 · 3. Results and discussion · Scheme 1; Fig. 1a |
| hierarchical nickel cobalt selenide complex hollow spheres | (Ni0.33Co0.67)Se2Ni and Co | 0D · Derivedhierarchical complex hollow spheres composed of CoSe2/NiSe2-like diffraction features | 110 · 1. Introduction |
| NiCo2O4 multishelled hollow spheres | NiCo2O4Ni and Co | 0D · Derivedspinel NiCo2O4 multishelled hollow spheres | 111 · 3. Results and discussion · Scheme 1; Fig. 2a |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| activated carbon negative electroderesearch_0241__mat__mat_activated_carbon | Electrode · Composite Component · Composite | negative electrode used in charge-balanced ASC; full electrode recipe not reported | 9 · Supplementary data · Fig. S7 |
| Ni-Co-MOF solid spheresresearch_0241__mat__mat_ni_co_mof | Powder · Unknown · Pristine Framework | solvothermal precursor, dried at 70 deg C under vacuum for 12 h | 110 · 2.1.1. Synthesis of Ni-Co-MOF precursor |
| (Ni0.33Co0.67)Se2 CHS working electroderesearch_0241__mat__mat_ni_co_selenide_chs | Electrode · Target Sample · Composite | slurry-coated electrode dried at 80 deg C under vacuum for 12 hnickel foam | 110 · 2.3. Electrochemical measurements |
| hierarchical (Ni0.33Co0.67)Se2 CHSsresearch_0241__mat__mat_ni_co_selenide_chs | Powder · Target Sample · Mixed Metal | hydrothermal selenization of NiCo2O4 MHSs, dried at 80 deg C under vacuum overnight | 110 · 2.1.3. Synthesis of (Ni0.33Co0.67)Se2 CHSs |
| NiCo2O4 MHS working electroderesearch_0241__mat__mat_nico2o4_mhs | Electrode · Pristine Control · Composite | slurry-coated electrode dried at 80 deg C under vacuum for 12 hnickel foam | 110 · 2.3. Electrochemical measurements |
| NiCo2O4 MHSsresearch_0241__mat__mat_nico2o4_mhs | Powder · Pristine Control · Mixed Metal | annealed from Ni-Co-MOF precursor at 400 deg C in air | 110 · 2.1.2. Synthesis of NiCo2O4 MHSs |
| (Ni0.33Co0.67)Se2 CHSs//AC ASC deviceresearch_0241__mat__mat_ni_co_selenide_chs | Electrode · Composite Sample · Composite | asymmetric supercapacitor assembled with charge-balanced positive and negative electrodes | 114 · 3. Results and discussion · Fig. 6 |