Vapor phase infiltration of ZnO quantum dots for all-solid-state PEO-based lithium batteries

Atomic Layer Infiltration Enabled Cu Coordination Environment Construction for Enhanced Electrochemical CO2 Reduction Selectivity: Case Study of a Cu Metal–Organic Framework

“…48 In O 1s spectra (Figure 2d), HKUST-1 showed peak regions at approximately 531.8, 533.0, and 534.3 eV, which were referred to as the Cu−O, −COO, and H 2 O groups, respectively. 49,52 After ALI modification, an additional peak appeared at a lower binding energy region of 530.5 eV, which was ascribed to the O atoms coordinated with Zn atoms, confirming that the ALI method successfully generates Zn−O coordinated bonds. 49 Furthermore, it is worth mentioning that the relative content of H 2 O was reduced in HKUST-1-5C-Zn-ALI (Table S3), which was because the introduction of Zn reduced the coordination of water in HKUST-1.…”

“…49,52 After ALI modification, an additional peak appeared at a lower binding energy region of 530.5 eV, which was ascribed to the O atoms coordinated with Zn atoms, confirming that the ALI method successfully generates Zn−O coordinated bonds. 49 Furthermore, it is worth mentioning that the relative content of H 2 O was reduced in HKUST-1-5C-Zn-ALI (Table S3), which was because the introduction of Zn reduced the coordination of water in HKUST-1. This conclusion was validated by the FT-IR spectral signal at 1550 cm −1 , which was consistent with the water-coordinated Cu in HKUST-1 as was mentioned above.…”

“…In the processes, porous substrates such as HKUST-1 enabled gasphase precursor infiltration and spread into the nanoporous structure, so that the precursor could develop inside the subsurface. 35,48,49 The position of the main XRD diffraction peak of the synthesized HKUST-1 was identical with that of the simulated HKUST-1 crystal, and peaks at 2θ = 9.5, 11.65, 13 corresponded to the (220), (222), and (400) crystal planes, respectively, which indicates a kind of ordering that can be related to the contribution of the most intense reflections of each of the corresponding related MOFs within the measured 2θ range. 31,46,50 Furthermore, the XRD peaks of HKUST-1-nC-Zn (varying Zn contents) coincided quite well with the synthesized HKUST-1 pattern (Figure 2a).…”

Recent progress in quantum dots based nanocomposite electrodes for rechargeable monovalent metal-ion and lithium metal batteries

“…260 Towards stabilizing the Li metal anode, QDs and QD based composites have been used as a matrix for dendrite-free lithium deposition, as a component in the solid-state electrolyte to improve the ionic conductivity, for increasing the Li + transference number and reducing interfacial resistance with lithium metal and as an electrolyte additive to regulate homogeneous lithium deposition at the anode. 55,261 One of the strategies to stabilize lithium metal is to guide the metal deposition away from the anode/electrolyte interface during charging. Metals such as gold (Au), zinc (Zn), silicon (Si), copper (Cu), cobalt (Co), etc.…”

“…Modifying the solid/polymer electrolyte with suitably designed inorganic fillers in the form of QDs has been shown to improve the Li + transport characteristics of the electrolyte as well as stabilize the anode/electrolyte interface with a stable SEI. Bao et al 261 demonstrated a vapor phase infiltration of ZnO QDs into and onto PEO SSE. The infiltration of ZnO QDs into the PEO matrix offers strong polymer filler interaction via the coordination of Zn and O of PEO, and inhibits the crystallization of PEO, and improves the Li + transportation.…”