Single-phase CaFe2O4 micro-nano hierarchy material with surface texture and preparation method thereof

Abstract

The invention discloses a single-phase CaFe2O4 micro-nano hierarchy material with surface texture and a preparation method thereof. The diameter of each separate particle of the single-phase CaFe2O4 micro-nano hierarchy material with surface texture is 1 to 6 mu m, and the surface of each particle has obvious step-like texture. The preparation method comprises the following steps (1) mixing 2.0 to 0.5 mol of calcium oxalate and 4 to 1 mol of a ferric ammonium oxalate crystal, adding 30 to 40 ml of a mixed solvent of deionized water and anhydrous glycol in a volume ratio of 0.5-1 1-5 and carrying out stirring with a magnetic stirrer for 1 to 3 h; and (2) adding 1 to 3 g of oxalic acid into a solution obtained in the step (1), continuing stirring for 0.5 to 1 h, transferring an obtained mixture to a stainless steel reaction vessel with a polytetrafluoroethylene substrate, carrying out a hydrothermal reaction at a temperature of 180 to 230 DEG C for 14 to 24 h, then carrying out filtration, washing a precipitate with distilled water 2 to 3 times and drying the precipitate at normal temperature so as to obtain the single-phase CaFe2O4 micro-nano hierarchy material with surface texture. The method provided by the invention has the advantages of simple operation, low cost, low energy consumption, high product purity and capacity of large scale synthesis of the material.

Description

technical field [0001] The invention relates to the field of material chemistry, in particular to a single-phase CaFe with surface texture 2 o 4 A micro-nano hierarchical structure material and a preparation method thereof, the material can be used as an electrode material of a lithium-ion battery. Background technique [0002] At present, micro-nano materials with a special hierarchical structure have been widely used in photocatalysis, lithium-ion batteries and solar cells, and have received widespread attention from industry and academia at home and abroad. However, for CaFe 2 o 4 This ternary oxide material has received very little attention at home and abroad. At present, the main strategy adopted by most of the synthesis processes is to obtain irregular micron particles based on the solid-state method of ceramic sintering theory. In order to provide a new type of CaFe in the future 2 o 4 The technical reserve of the material is well prepared to solve the problem ...

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Problems solved by technology

In order to provide a new type of CaFe for the future 2 o 4 The material has good technical reserves and solves the problem of the singleness of synthesizing the material at present. The present invention aims to provide a simple liquid phase method to obtain single-phase CaFe with surface texture. 2 o 4 Micro-Nano Hierarchical Structured Materials

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