Este trabalho reporta medidas de condutividade iônica realizadas para o LiHf2(PO4)3 calcinado a 1100 °C. As respostas devidas aos grãos in te rior e junção puderam ser identificadas tanto nas curvas de impedância, como na parte real das curvas de condutividade vs. freqüência. A energia de ativação, associada ao movi men to dos íons Li no in te rior dos grãos, é 0,33 eV, enquanto que aquela asso...

Solid-state sodium–metal batteries will not achieve reasonable power density without electrolytes that solve the dendrite (filamentation) problem. Metal-filament formation during plating at ceramic/metal interfaces can cause electrical failure by internal short-circuit or mechanical electrolyte fracture. Herein, an Na3Zr2Si2PO12 (NZSP) sodium-ion-conducting NASICON in which TiO2 is incorporated...

During the reversible insertion of ions, lattices in intercalation materials undergo structural transformations. These lattice transformations generate misfit strains and volume changes that, turn, contribute to decay limit their cycling. In this paper, we draw on insights from shape-memory alloys, another class phase transformation materials, that also large but do so with negligible macroscop...

As the importance of developing low-cost and high-capacity materials is emerging, Mn-based Na4MnV(PO4)3 positive electrode that allow multiredox reactions are in spotlight for Na-ion batteries. The structure gives highly reversible electrochemical reactions, when two Na+ (out four) de-inserted, deteriorates rapidly third extracted at high voltage, resulting poor cyclability. In this work, using...

Abstract Densification of ceramic electrolytes is a key enabler in producing electrolyte pellets for solid‐state batteries. This requires understanding the correlation between starting grain size electrolytes, chemical phase evolution and degree compaction which determine ion conductivity stability solid electrolytes. In our work we were able to optimize densification process LATP at 700 °C wit...

Abstract Inorganic solid electrolytes are the most important component for realizing all-solid-state batteries with lithium metal anodes and enable safe battery cells high energy densities. Their synthesis processing subject of current research, especially NASICON-type Li 1+x AlxTi 2-x (PO 4 ) 3 (LATP). Herein, ability sintering electro-magnetic irradiation is investigated correlated different ...