Preparation and Characterization of Solid Electrolytes Based on TiP₂O₇Pyrophosphate

Abstract

The Li 4x Ti 1-x P 2 O 7 (x D 0, 0.06, 0.1, 0.2) powders have been synthesized by the solid state reaction and their ceramics have been sintered. The Li 4x Ti 1-x P 2 O 7 (x D 0.06, 0.1, 0.2) compounds have cubic superstructure 3£3£3 (space group Pa-3), which is also typical for TiP 2 O 7 pyrophosphate. The electrical properties of the ceramics were investigated in the frequency range of 10 to 3¢10 9 Hz and temperature interval of 400-720 K by impedance spectroscopy. The relaxation dispersion region in the conductivity and dielectric permittivitty spectra of Li 4x Ti 1-x P 2 O 7 (x D 0, 0.06, 0.1, 0.2) ceramics was found.

Synthesis and research of electrode and solid electrolyte materials for lithium ion batteries

“…Li 4x Ti 1-x P 2 O 7 (x = 0, 0.06, 0.1, 0.2) samples were obtained. The temperature dependences of total conductivities σ tot of the ceramics were derived from complex impedance plots obtained at different temperatures [25]. The temperature dependences of σ tot are presented in Fig.…”

Ab initio studies for characterization and identification of nanocrystalline copper pyrophosphate confined in mesoporous silica

“…The nanocrystalline and amorphous pyrophosphates, containing transition metal ions, show unique physical, chemical and mechanical characteristics. Metal (II) pyrophosphates, due to concomitant biological, magnetic and chemical properties, are used as catalysts [1], nano biomaterials [2], proton conductors [3], lasing materials [4] or ferroelectrics [5]. The amorphous nickel based pyrophosphate for example could be used for energy storage devices [6], and the nickel pyrophosphate nanocrystals are the promising materials for applications in nanophotonics [7].…”