A kind of ceramic electrolyte material and preparation method thereof

Abstract

The invention belongs to the field of laser processing technology and energy materials, and specifically relates to a rapid laser sintering synthesis solid electrolyte and a preparation method thereof. Specifically: the chemical formula of the solid electrolyte is A 2 B x o y (2≤x≤10, 7≤y≤20, and 0≤y / x≤3.5), where A is Sm, Sc, Y, La, Nd, Eu, Gd, Dy, Er, Yb, Lu and other rare earth elements , B is Ti, Zr, Ce and Hf. The solid electrolyte obtained by the invention has the characteristics of stable structure and high ion conductivity, and at the same time solves the problems of difficult sintering and easy powder agglomeration of the traditional ceramic structure electrolyte, the preparation method is simple, the utilization rate of raw materials is high, the energy consumption is low, and there is no pollution .

Description

[0001] The invention belongs to the field of laser processing technology and energy materials, and in particular relates to a fast laser sintering solid state electrolyte and a preparation method thereof. Background technique [0002] With the continuous consumption of traditional fossil energy and the increasingly serious environmental problems, new energy devices represented by fuel cells and lithium-ion batteries continue to emerge. Solid Oxide Fuel Cell (Solid Oxide Fuel Cell, referred to as SOFC) belongs to the third-generation fuel cell, which is an all-solid-state device that directly converts the chemical energy stored in fuel and oxidant into electrical energy in an efficient and environmentally friendly manner at medium and high temperatures. Chemical power plant. Among all fuel cells, SOFC has the highest operating temperature, which belongs to high-temperature fuel cells. It not only has high power generation efficiency, but also has low pollution environmental ben...

AI Technical Summary

Problems solved by technology

In recent years, rare earth zirconate electrolytes with a pyrochlore structure have attracted extensive attention from researchers due to their good ionic conductivity. Zirconium-based pyrochlore system oxides (Ln 2 Zr 2 o 7 , Ln=La, Nd, Gd, Sm, etc.) at a medium temperature of 400-800 ° C, although the ionic conductivity exceeds that of yttria-stabilized zirconia (YSZ), its ionic conductivity still needs further research and improvement. Another On the one hand, rare earth zirconate is a material that is difficult to synthesize by traditional solid-state reaction methods, and requires high equipment and synthesis conditions.

Images