Microstructure and ionic conductivity of Li1+Al Ti2−(PO4)3 NASICON glass-ceramics

Orthorhombic Lithium Titanium Phosphate as an Anode Material for Li-ion Rechargeable Battery

“…Since the electrochemical performance of the intercalation hosts depends on both the diffusion coefficient of Li + and the electrical conductivity of the host structure, the electrical conductivities of OLTP and RLTP were also measured by means of a powder resistivity system (Hiresta-UP). Although the obtained electrical conductivities of OLTP and RLTP are close to other NASICON-type host materials [16,17,18], it was found that the electrical conductivity of OLTP (1.036 Â 10 À5 S cm À1 ) is an order of magnitude higher than that of RLTP (1.669 Â 10 À6 S cm À1 ) in this study. Therefore, OLTP could be a good alternative for the RLTP anode as it has a slightly higher electrical conductivity and diffusion coefficient.…”

Effects of preparation conditions on the ionic conductivity of hydrothermally synthesized Li1+Al Ti2-(PO4)3 solid electrolytes

“…In particular, an LATP particle has grain boundaries that deliver different Li + conduction paths from its bulk phase. More recently, various effective synthesis methods have been tried to prepare LATP with superior electrochemical properties; these methods include meltquenching [3][4][5], sol-gel [6][7][8][9][10][11], mechanical milling [12,13], and co-precipitation [14][15][16] techniques. Moreover, actual electrolytes using LATPs have been seen in many earlier examples of lithiumion [17][18][19][20][21][22], Li-air [23,24], and Li-sulfur batteries [25].…”

“…Moreover, actual electrolytes using LATPs have been seen in many earlier examples of lithiumion [17][18][19][20][21][22], Li-air [23,24], and Li-sulfur batteries [25]. For more information, Table 1 summarizes the LATP examples [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]26] prepared by various synthetic methods to obtain various values of room-temperature (RT) ionic conductivity (s) and activation energy (E a ), including the reported ionic conductivities (s b and s g ) and activation energies (E b and E g ) in both phases of bulk and grain boundary. Until now, the highest total s(RT) achievable was proved to be 1.3 Â 10 À3 S cm À1 from the LATP prepared by meltquenching at temperatures over 1400 C [3][4][5], but it is very dangerous to handle due to the extremely high temperature.…”

Determination of crystallization kinetics parameters of a Li1.5Al0.5Ge1.5(PO4)3 (LAGP) glass by differential scanning calorimetry

“…Furthermore, LAGP compounds are also chemically stable when in contact with metallic lithium. Because of these characteristics, LAGP compounds are of technological interest, since they are good candidates to be used as solid-electrolytes in lithium ion batteries [1][2][3] , or as membranes in electrochemical sensors 4 . Since electrical and mechanical properties are dependent on the microstructure 5 , which may be tailored by controlled crystallization, knowledge about the crystallization kinetics of this family of glasses is of fundamental interest.…”