Manganese oxide-fesimnti intermetallic compound-based composite porous electrode material and preparation method thereof

Abstract

The invention belongs to the field of composite materials, and discloses a manganese oxide-FeSiMnTi intermetallic compound-based composite porous electrode material and a preparation method thereof. The manganese oxide-FeSiMnTi intermetallic compound-based composite porous electrode material comprises 5%-15% of MnOx, 40%-50% of Fe, 15%-35% of Si, 5%-15% of Mn and 5%-15% of Ti, wherein x is equal to 1,3 / 4 or 2. According to the manganese oxide-FeSiMnTi intermetallic compound-based composite porous electrode material and the preparation method thereof, a mode of mixing oxide powder and element powder is adopted, a substrate is synthesized and prepared by using reaction between the element powder, and an oxide / intermetallic compound-based composite material is prepared by combining an initially added oxide component; and the mixing mode forms a large number of pores by fully utilizing a Kirkendall effect caused by partial diffusion of a rapid diffusion component in a substrate material component under a high-temperature condition through design of the substrate material component and design of a sintering process, and finally the oxide / intermetallic compound-based composite porous material is prepared. The controllability of a pore structure is relatively good, a pore forming agent does not need to be added, and the manganese oxide-FeSiMnTi intermetallic compound-based composite porous electrode material has the characteristic of short process.

Description

technical field

[0001] The invention relates to the field of composite materials, in particular to a manganese oxide-FeSiMnTi intermetallic compound-based composite porous electrode material and a preparation method thereof. Background technique

[0002] With the development of hydrometallurgical industry, common industrial and civil metal materials, such as Zn, Cu, Mn, etc., are usually extracted or deposited by electrolysis. Currently, these hydrometallurgical electrolysis processes widely use lead-based alloys or lead-containing materials as anodes. Lead anodes usually have problems such as poor mechanical strength, easy bending and deformation leading to short circuit, high oxygen evolution overpotential, and high energy consumption; There are major hazards or hidden dangers in the surrounding environment and ecological balance, human health and civilian life.

[0003] However, the current international research on the modification of hydrometallurgical anode materials...

Examples

Embodiment 1

[0033] Using MnOx (x=1) oxide powder and Fe, Si, Mn, Ti and other element powders are used as raw materials, mixed according to the following composition ratio, MnO x : 6%, Fe: 48%, Si: 32%, Mn: 8%, Ti: 6%. MnO x The particle size of the powder is -400 mesh, the particle size of the Fe powder is -200 mesh, the particle size of the Si powder is -325 mesh, the particle size of the Mn powder is -325 mesh; the particle size of the Ti powder is -400 mesh. MnO x The powder and each element powder are put into a ball mill mixer for mixing. The mixing atmosphere is protected by an inert gas, the ball-to-material ratio is 1:1, and the mixing time is 72 hours. Add a forming agent with a mass percentage of 4% to the mixed powder, the forming agent is composed of stearic acid and paraffin, and the ratio of stearic acid and paraffin is 2:1. It is added in the form of paraffin wax + stearic acid + alcohol, and dried in a vacuum drying oven after adding. The drying temperature is 60°C, a...

Embodiment 2

[0035] Using MnO x (x=3 / 4) oxide powder and Fe, Si, Mn, Ti and other element powders are used as raw materials, mixed according to the following composition ratio, MnO x : 15%, Fe: 40%, Si: 15%, Mn: 15%, Ti: 15%. MnO x The particle size of the powder is -400 mesh, the particle size of the Fe powder is -200 mesh, the particle size of the Si powder is -325 mesh, the particle size of the Mn powder is -325 mesh; the particle size of the Ti powder is -400 mesh. MnO x The powder and each element powder are put into a ball mill mixer for mixing. The mixing atmosphere is protected by an inert gas, the ball-to-material ratio is 1:1, and the mixing time is 72 hours. Add a forming agent with a mass percentage of 4% to the mixed powder, the forming agent is composed of stearic acid and paraffin, and the ratio of stearic acid and paraffin is 2:1. It is added in the form of paraffin wax + stearic acid + alcohol, and dried in a vacuum drying oven after adding. The drying temperature is ...

Embodiment 3

[0037] Using MnO x (x=2) oxide powder and Fe, Si, Mn, Ti and other element powders are used as raw materials, mixed according to the following composition ratio, MnO x : 5%, Fe: 50%, Si: 35%, Mn: 5%, Ti: 5%. MnO x The particle size of the powder is -400 mesh, the particle size of the Fe powder is -200 mesh, the particle size of the Si powder is -325 mesh, the particle size of the Mn powder is -325 mesh; the particle size of the Ti powder is -400 mesh. MnO x The powder and each element powder are put into a ball mill mixer for mixing. The mixing atmosphere is protected by an inert gas, the ball-to-material ratio is 1:1, and the mixing time is 72 hours. Add a forming agent with a mass percentage of 4% to the mixed powder, the forming agent is composed of stearic acid and paraffin, and the ratio of stearic acid and paraffin is 2:1. It is added in the form of paraffin wax + stearic acid + alcohol, and dried in a vacuum drying oven after adding. The drying temperature is 60°C,...

technical field

[0001] The invention relates to the field of composite materials, in particular to a manganese oxide-FeSiMnTi intermetallic compound-based composite porous electrode material and a preparation method thereof. Background technique

[0002] With the development of hydrometallurgical industry, common industrial and civil metal materials, such as Zn, Cu, Mn, etc., are usually extracted or deposited by electrolysis. Currently, these hydrometallurgical electrolysis processes widely use lead-based alloys or lead-containing materials as anodes. Lead anodes usually have problems such as poor mechanical strength, easy bending and deformation leading to short circuit, high oxygen evolution overpotential, and high energy consumption; There are major hazards or hidden dangers in the surrounding environment and ecological balance, human health and civilian life.

[0003] However, the current international research on the modification of hydrometallurgical anode materials...

Examples

Embodiment 1

[0033] Using MnOx (x=1) oxide powder and Fe, Si, Mn, Ti and other element powders are used as raw materials, mixed according to the following composition ratio, MnO x : 6%, Fe: 48%, Si: 32%, Mn: 8%, Ti: 6%. MnO x The particle size of the powder is -400 mesh, the particle size of the Fe powder is -200 mesh, the particle size of the Si powder is -325 mesh, the particle size of the Mn powder is -325 mesh; the particle size of the Ti powder is -400 mesh. MnO x The powder and each element powder are put into a ball mill mixer for mixing. The mixing atmosphere is protected by an inert gas, the ball-to-material ratio is 1:1, and the mixing time is 72 hours. Add a forming agent with a mass percentage of 4% to the mixed powder, the forming agent is composed of stearic acid and paraffin, and the ratio of stearic acid and paraffin is 2:1. It is added in the form of paraffin wax + stearic acid + alcohol, and dried in a vacuum drying oven after adding. The drying temperature is 60°C, a...

Embodiment 2

[0035] Using MnO x (x=3 / 4) oxide powder and Fe, Si, Mn, Ti and other element powders are used as raw materials, mixed according to the following composition ratio, MnO x : 15%, Fe: 40%, Si: 15%, Mn: 15%, Ti: 15%. MnO x The particle size of the powder is -400 mesh, the particle size of the Fe powder is -200 mesh, the particle size of the Si powder is -325 mesh, the particle size of the Mn powder is -325 mesh; the particle size of the Ti powder is -400 mesh. MnO x The powder and each element powder are put into a ball mill mixer for mixing. The mixing atmosphere is protected by an inert gas, the ball-to-material ratio is 1:1, and the mixing time is 72 hours. Add a forming agent with a mass percentage of 4% to the mixed powder, the forming agent is composed of stearic acid and paraffin, and the ratio of stearic acid and paraffin is 2:1. It is added in the form of paraffin wax + stearic acid + alcohol, and dried in a vacuum drying oven after adding. The drying temperature is ...

Embodiment 3

[0037] Using MnO x (x=2) oxide powder and Fe, Si, Mn, Ti and other element powders are used as raw materials, mixed according to the following composition ratio, MnO x : 5%, Fe: 50%, Si: 35%, Mn: 5%, Ti: 5%. MnO x The particle size of the powder is -400 mesh, the particle size of the Fe powder is -200 mesh, the particle size of the Si powder is -325 mesh, the particle size of the Mn powder is -325 mesh; the particle size of the Ti powder is -400 mesh. MnO x The powder and each element powder are put into a ball mill mixer for mixing. The mixing atmosphere is protected by an inert gas, the ball-to-material ratio is 1:1, and the mixing time is 72 hours. Add a forming agent with a mass percentage of 4% to the mixed powder, the forming agent is composed of stearic acid and paraffin, and the ratio of stearic acid and paraffin is 2:1. It is added in the form of paraffin wax + stearic acid + alcohol, and dried in a vacuum drying oven after adding. The drying temperature is 60°C,...