Study of lithium-conducting ceramics Li1.3Al0.3Ti1.7(PO4)3 with the nasicon structure

NASICON-type Li1.3Al0.3Ti1.7(PO4)3 ceramics with a high-density was obtained from powders synthesized from a liquid-phase precursor. The technological scheme of Li1.3Al0.3Ti1.7(PO4)3 solid electrolyte production is given. It is established that at 800 °C a single-phase well-crystallized Li1.3Al0.3Ti1.7(PO4)3 is formed. The ionic conductivity of the sintered Li1.3Al0.3Ti1.7(PO4)3 tablets (density 88–90 %) was 1,9·10–4 S/cm at room temperature, and the electronic conductivity did not exceed 5·10–10 S/cm. The Li+ ion transfer number, measured by potentiostatic chronoamperometry, was 0.99, indicating that the solid electrolyte Li1.3Al0.3Ti1.7(PO4)3 is a purely ionic conductor.

Exceeding three-electron reactions in Na3+2xMn1+xTi1-x(PO4)3 NASICON Cathode with High Energy Density for Sodium-ion Batteries

The sodium super ionic conductor (NASICON) materials are considered as the attractive cathode in sodium-ion batteries. Although the three-electron reactions in Na3MnTi(PO4)3 have greatly enhanced the capacity of NASICON-structure materials,...

Zwitterionic polymer-derived nitrogen and sulfur co-doped carbon-coated Na3V2(PO4)2F3 as a cathode material for sodium ion battery energy storage

Polyanion-type Na3V2(PO4)2F3 (NVPF) represents a new potential cathode material due to its sodium super ionic conductor (NASICON) structure. However, unmodified Na3V2(PO4)2F3 is restricted by its intrinsic properties, and its limitations...

Large-scale preparation and electrochemical characterization of NaTi2(PO4)3/C composite nanoparticles as anode materials in sodium ion batteries

Materials with NASICON structure, such as NaTi2(PO4)3 (NTP), are widely studied in the field of sodium ion battery. They have potential applications, but their conductivity is poor. Nanostructure can shorten the ion and electron transport paths and make electrolytes permeable easily. Generally speaking, the electric conductivity of battery materials can be improved by adding appropriate amount of carbon. In this paper, large-scale NTP/C nanomaterial of kilogram level was prepared by spray drying. The as-prepared NTP/C nanomaterial shows good electrochemical performance. At 5 C, the initial specific capacity is 69 mA h g–1, and the capacity after 2000 cycles is about 73.2% of the initial capacity.