Multi-halogen-doped high-oxygen-flux perovskite film and preparation method and application thereof: Fid-Bau Portal

Multi-halogen-doped high-oxygen-flux perovskite film and preparation method and application thereof

LIU ZHENGKUN / JIN WANQIN / LIU JIA / ZHANG GUANGRU

The invention provides a multi-halogen-doped high-oxygen-flux perovskite membrane and a preparation method and application thereof, and belongs to the technical field of mixed conductor oxygen permeation membranes. The general formula of the material is AxA '1-xByB' 1-yO2.9-delta X0.1, A and A'are independently rare earth metal elements or alkaline earth metal elements, B and B 'are independently transition metal elements, X is two or more of F, Cl, Br and I, delta is the oxygen non-stoichiometric coefficient of the material, x is larger than or equal to 0 and smaller than or equal to 1, and y is larger than or equal to 0 and smaller than or equal to 1. A solid-phase reaction method and other methods are adopted to synthesize material powder, a membrane preparation technology including but not limited to an isostatic pressing method is adopted to prepare an oxygen permeation membrane material, and a multi-halogen doped perovskite membrane material is obtained through secondary roasting. The oxygen permeable membrane prepared by the method has higher oxygen permeation flux than an undoped membrane material, and the halide of the metal ions is cheap and easy to obtain, so that the method can be widely applied to the preparation process of the oxygen permeable membrane material.

本发明提供了一种多元卤素掺杂的高氧通量钙钛矿膜及其制备方法和应用，属于混合导体透氧膜技术领域。本发明材料的通式为AxA’1‑xByB’1‑yO2.9‑δX0.1，其中A、A’独立的为稀土金属元素或碱土金属元素，B、B’独立的为过渡金属元素，X为F、Cl、Br、I中的两种或两种以上，δ为材料的氧非化学计量系数，0≤x≤1，0≤y≤1。采用固相反应法等方法合成材料粉体，使用膜制备技术包括但不限于等静压法制备透氧膜材料，经二次焙烧获得多元卤素掺杂的钙钛矿膜材料。采用本发明制备的氧气渗透膜具有比未掺杂的膜材料更高的氧气渗透通量，且金属离子的卤化物廉价易得，可广泛应用于氧渗透膜材料的制备过程。

Zugriff

Download

Seitennavigation

Dokumentinformationen

Ähnliche Titel

Exportieren, teilen und zitieren