Luo Y., Liu J., Zhang L. · Angewandte Chemie - International Edition · 2022 · e202209458
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.
CuCA is presented as a high-performance LIB cathode because it combines high initial capacity, high-rate capacity and retained capacity after 50 cycles with quasi-solid-state electrolyte.
Caveat: Electrode is a composite with 30 wt% conductive carbon and 10 wt% binder; full-cell practical metrics were not reported.
7 · Conclusion · Linked to 3 structured results
Capacity decay in CuCA cells is attributed to generated intermediate materials dissolving in the trace liquid electrolyte and crossing the solid-state electrolyte film.
Caveat: Dissolution of intermediate materials is inferred from cycling decay and electrolyte film colour changes, not directly chemically quantified in the extracted results.
5 · Results and Discussion · Figure S12 · Linked to 3 structured results
CuCA is a pi-d conjugated coordination polymer where O 2p and Cu 3d orbital hybridisation enables electron transfer along CuCA chains and high electronic conductivity.
Caveat: Conductivity is measured on a pressed pellet, while orbital hybridisation and band gap are computational.
7 · Results and Discussion · Figure 3e-f · Linked to 3 structured results
The monocrystalline layered CuCA structure, large (201) interspacing, low DFT diffusion barrier and GITT diffusion coefficients are proposed to enable fast Li+ diffusion and good rate capability.
Caveat: Li diffusion barrier is computational and GITT reports a broad coefficient range.
7 · Results and Discussion · Figure 4f; Figure S7 · Linked to 6 structured results
CuCA stores charge through multiple redox centres: Cu2+/Cu+ near 3.0 V and two carbonyl-based reductions near 2.3 V and 2.0 V.
Caveat: Ex situ mechanistic tests used liquid electrolyte rather than the quasi-solid electrolyte because cycled quasi-solid cells were difficult to separate.
2 · Results and Discussion · Figure 1b · Linked to 7 structured results
Names and aliases are kept exactly within the paper’s own identity model.
| Material | Composition | Structure context | Source |
|---|---|---|---|
| chloranilic acid (CA) | C6H2Cl2O4none · molecular ligand/control | 0D · PristineMolecular carbonyl ligand and dissolution/electrochemical control. | 3 · Experimental Procedures |
| copper(II) chloranilate (CuCA) | C6O4Cl2CuCu2+ square-planar CuO4 nodes · chloranilate / deprotonated chloranilic acid (CA2-) | 1D · PristineMonoclinic Pa; alternating Cu2+ and CA2- chain structure along b axis, pi-d conjugated, layered by pi-pi stacking, monocrystalline nanosheets. | 2-3 · Results and Discussion · Figures 1-2 |
| potassium chloranilate (K2CA) | K2C6O4Cl2K+ counterions; no transition-metal coordination node · chloranilate | 0D · PristinePrecursor salt/control for CuCA electrochemistry. | 2 · Results and Discussion · Figure 1a |
| PPC-PEO-LiTFSI-Al2O3 composite solid-state electrolyte film | Not specifiednot applicable · not applicable | unknown · CompositeComposite polymer/ceramic electrolyte film used in CuCA and K2CA battery tests. | 3 · Experimental Procedures |
Sample form, processing state and composition status define the context for measurements.
| Sample | Form and role | Processing and geometry | Source |
|---|---|---|---|
| CA in liquid-electrolyte controlresearch_0518__mat__ca | Powder · Pristine Control · Unknown | CA solubility and liquid-electrolyte electrochemical control | 15 · Results and Discussion · Figure S11 |
| CuCA periodic DFT modelresearch_0518__mat__cuca | Model · Model System · Model | spin-polarised periodic DFT model | 4 · Theoretical Calculations |
| CuCA composite electrode in liquid-electrolyte LIB coin cellresearch_0518__mat__cuca | Electrode · Composite Sample · Composite | CuCA/KB/CMC composite electrode tested with 1.0 M LiTFSI in DME/DOL and Celgard 2400 or GFD separatorAl foil or Be slice for in situ XRD | 6 · Results and Discussion · Figure 5 |
| CuCA composite electrode in quasi-solid-state LIB coin cellresearch_0518__mat__cuca | Electrode · Composite Sample · Composite | 60 wt% CuCA, 30 wt% Ketjenblack, 10 wt% CMC slurry cast on Al foil; dried at 120 C for 10 h; paired with PPC-PEO-LiTFSI-Al2O3 film plus liquid LiTFSI DME/DOL wettingAl foil | 3 · Electrochemical Measurements |
| pressed CuCA pellet for four-point proberesearch_0518__mat__cuca | Pellet · Target Sample · Pristine Framework | 254.0 mg CuCA powder pressed in 13 mm mould at 20.0 MPa for 10 min~0.78 mm | 3 · Material Characterizations |
| as-synthesised CuCA nanosheet powderresearch_0518__mat__cuca | Nanosheet · Target Sample · Pristine Framework | dark green precipitate, washed and vacuum-dried; used for structural, porosity, spectroscopy and thermal characterisationca. 30 nm nanosheet thickness | 3 · Results and Discussion · Figure 2d-f |
| PPC-PEO-LiTFSI-Al2O3 composite solid-state electrolyte filmresearch_0518__mat__ppc_peo_litfsi_al2o3 | Thin Film · Composite Component · Composite | solution cast on 6 cm x 8 cm cellulose nonwoven membrane, dried, cut to 16 mm discscellulose nonwoven membrane | 3 · Synthesis of PPC-PEO-LiTFSI-Al2O3 Composite Solid-State Electrolyte Film |
| K2CA composite electrode in quasi-solid-state LIB coin cellresearch_0518__mat__k2ca | Electrode · Pristine Control · Composite | active material/KB/CMC composite electrode tested with PPC-PEO-LiTFSI-Al2O3 based quasi-solid-state electrolyteAl foil | 4-5 · Results and Discussion · Figure 4d-e and Figure S5 |
| potassium chloranilate precursor powderresearch_0518__mat__k2ca | Powder · Pristine Control · Unknown | precipitated, centrifuged, ethanol-washed and vacuum-dried | 3 · Synthesis of copper(II) chloranilate of CuCA |