Extreme behavior of Li-ion conductivity in the Li2O–Al2O3–P2O5 glass system

Analyses on the application of components in the phosphogypsum decomposition residue: Based on the study of migration and conversion rules of elements in the purification procedure of CaO

“…Meanwhile, P2O5 can be used to produce the optical glass, insulating glass and opaque glass, etc. As is known to all, Ca 2 SiO 4 and SiO 2 can improve the dispersion coefficient and the ability to penetrate ultraviolet light of glass [42]. It can be seen in Figure 8b, content of P2O5 in residue 2 and CaO sample is more than 3 and 2.5%, respectively.…”

“…In consideration of the chemical properties of Ca 2 SiO 4 and SiO 2 in residue 2, an application of residue 2 on producing the glass would be considerable. As is known to all, Ca 2 SiO 4 and SiO 2 can improve the dispersion coefficient and the ability to penetrate ultraviolet light of glass [42]. And moreover, CaO sample can be used as the desiccant in the light of a higher hygroscopicity of CaO and P 2 O 5 .…”

Morphology-Directed Synthesis of LiFePO4 and LiCoPO4 from Nanostructured Li1+2xPO3+x

“…The appearance of a small impurity of Li-rich Li 4 P 2 O 7 in the XRD pattern after calcination at 600 °C (Figure a) is consistent with the ICP-MS analysis, indicating a lithium-rich material (i.e., Li 1+2 x PO 3+ x ). Figure b shows IR spectra for the as-synthesized material and the material calcined at 600 °C, both displaying characteristic peaks corresponding to vibrational modes of the PO 4 tetrahedra and the P–O–P bonds present in LiPO 3 phosphate chains. − Interestingly, SEM images reveal a novel nanoparticulate morphology (Figure c), with typical particle sizes ranging from 20 to 35 nm (see Figure S1). The material showed a large specific surface area of 41.6 m 2 g –1 , as determined from nitrogen adsorption using the Brunauer–Emmett–Teller (BET) method.…”

Lithiation-Derived Repellent toward Lithium Anode Safeguard in Quasi-solid Batteries

“…After cycling, the split of the 7 Li peak signifies two environments for Li (Figure 4A), 38 whereas the four-coordinated Al 3+ weakens and the six-coordinated Al 3+ evidently increase in the 27 Al spectrum (Figure 4B), which are clues for conductivity enhancement for the i-QSE. 39,40 New fluorophosphate peaks arising between À20 and À30 ppm in the 31 P spectrum (Figure 4C) are considered as SEI constituents that stabilize the interfaces with the help of Al-containing (oxy)fluorides. 41 Few rings emerge in the selected area electron diffraction (SEAD) pattern in the i-QSE after cycling (Figures 4D and 4E), which indicates crystallization of AlPO 4 after lithiation.…”