Structural and electrical properties of high-energy ball-milled NASICON type Li1.3Ti1.7Al0.3(PO4)2.9(VO4)0.1 ceramics

Effect of VO43−Substitution for PO43−on Electrical Conductivity in the Nasicon Li3Sc2(PO4)3Compound

“…Note that the high conductivity of the Li 3 Sc 2 (PO 4 ) 3 materials was also observed for Li 1.3 Ti 1.7 Al 0.3 (PO 4 ) 2.9 (VO 4 ) 0.1 ceramics prepared by the high-energy ball-mill method [17]. The high-energy ball milling greatly decreases the crystallite size and at the same time increases the grain boundaries area, and therefore plays an important role in improving electrical conductivity of the materials.…”

“…Electrical conductivity of solid state electrolytes, such as glasses and crystalline materials, can be effectively enhanced by the socalled mixed anion effect [13][14][15][16][17][18][19][20][21]32,33]. For some materials, such as Li 4 SiO 4 -Li 3 BO 4 glasses, the improved conductivity was resulted from the aliovalent ion substitution [14] and was explained by the charge compensation mechanism.…”

“…Studies on the Li 1 +x Al x Ti 2Àx (PO 4 ) 3 compound have shown that VO 4 3À anion substitution for PO 4 3À can improved the sinterability of the material, and consequently its ionic conductivity [17][18][19][20][21]. It has been proven to be an effective method to enhance the conductivity of the electrode materials such as Li 1+y Mn 1.5 Ni 0.5 O 4Àx F x spinels [22] and Li x TiS 2-z Se z layer-structured compound [23] as well.…”

A systematic study of Nasicon-type Li1+xMxTi2−x(PO4)3 (M: Cr, Al, Fe) by neutron diffraction and impedance spectroscopy

“…The overlap of both semicircles in these kinds of samples arises because bulk and grain boundary contributions to the conductivity are very close in frequency. This can be ascribed to low electrical homogeneity of the samples and makes it necessary to use different representations of the conductivity data [38,39]. The electrical modulus is simply related to the permittivity, M* = 1 / ε*, and it is a very convenient representation in this case because the spectrum is dominated by the lowest capacity element and therefore the maximum at each temperature describes the bulk response of the sample [40,41].…”

Boosting the Performance of Solid‐State Lithium Battery Based on Hybridizing Micron‐Sized LATP in a PEO/PVDF‐HFP Heterogeneous Polymer Matrix

“…Energy dispersive spectrometry (EDS) elemental mappings explicitly show the components of LATP. Compared with the synthesis of nano-sized LATP, the preparation of micron-sized LATP by solid-state reaction method does not require high energy ballmilling machine and sol-gel method, [36,37] which is much more facile and cost-effective. The phase and crystalline of the calcined LATP were measured by X-ray diffraction (XRD), as shown in Figure 1c.…”