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The invention discloses a magnesium silicide thermoelectric semiconductor material and a preparation method and application thereof, the thermoelectric performance of the prepared magnesium silicide thermoelectric semiconductor material is the highest when the molar ratio of magnesium to silicon is 2.1: 1 by taking waste silicon powder and magnesium powder in the photovoltaic industry as raw materials, optimizing the process of high-energy ball milling and spark plasma sintering and controlling the content of the magnesium powder at the same time. Compared with a magnesium silicide thermoelectric material prepared from commercial silicon powder, the preparation method has the advantages that the unpurified photovoltaic industry waste silicon powder is adopted, so that the manufacturing cost is directly reduced, the preparation process is simplified, the preparation time is shortened, the economic benefit of solid waste recycling can be achieved, the effect of solid waste recycling is achieved, and certain significance is achieved for environmental protection.
本发明公开了一种硅化镁热电半导体材料及其制备方法和应用，以光伏产业废硅粉和镁粉为原料，通过高能球磨和放电等离子体烧结的工艺优化，同时控制镁粉含量，在镁硅摩尔比为2.1：1时制备出来的硅化镁热电半导体材料热电性能最高。与采用商业硅粉制备的硅化镁热电材料相比，本发明采用未经提纯的光伏产业废硅粉，直接降低了制造成本，简化制备工艺，缩短制备时间，可以达到固废回收再利用的经济效益，起到固废回收再利用的作用，对环境保护具有一定意义。
The invention discloses a magnesium silicide thermoelectric semiconductor material and a preparation method and application thereof, the thermoelectric performance of the prepared magnesium silicide thermoelectric semiconductor material is the highest when the molar ratio of magnesium to silicon is 2.1: 1 by taking waste silicon powder and magnesium powder in the photovoltaic industry as raw materials, optimizing the process of high-energy ball milling and spark plasma sintering and controlling the content of the magnesium powder at the same time. Compared with a magnesium silicide thermoelectric material prepared from commercial silicon powder, the preparation method has the advantages that the unpurified photovoltaic industry waste silicon powder is adopted, so that the manufacturing cost is directly reduced, the preparation process is simplified, the preparation time is shortened, the economic benefit of solid waste recycling can be achieved, the effect of solid waste recycling is achieved, and certain significance is achieved for environmental protection.
本发明公开了一种硅化镁热电半导体材料及其制备方法和应用，以光伏产业废硅粉和镁粉为原料，通过高能球磨和放电等离子体烧结的工艺优化，同时控制镁粉含量，在镁硅摩尔比为2.1：1时制备出来的硅化镁热电半导体材料热电性能最高。与采用商业硅粉制备的硅化镁热电材料相比，本发明采用未经提纯的光伏产业废硅粉，直接降低了制造成本，简化制备工艺，缩短制备时间，可以达到固废回收再利用的经济效益，起到固废回收再利用的作用，对环境保护具有一定意义。
Magnesium silicide thermoelectric semiconductor material and preparation method and application thereof
一种硅化镁热电半导体材料及其制备方法和应用
2023-11-17
Patent
Electronic Resource
Chinese
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