| dc.description.abstract | Currently, fossil fuel energy is the main source of electricity. In recent years, owing to the rapid development of industry, energy supply has led to problems such as energy shortage and climate warming. In order to solve this problem, the development of renewable energy has gradually attracted attention. Among them, thermoelectric power generation is widely studied. Since the thermoelectric material can convert the waste heat into electrical energy, under a temperature difference, there will be a potential difference; thereby converting thermal energy into electrical energy.
This dissertation mainly studies P-type Mg2(SiSn) thermoelectric materials. We tried to adjust the process parameters, measure and analyze the test samples, select the parameters with the best thermoelectric performance to make the device, find the metal contacts suitable for component manufacturing, and finally measure the output characteristics of the component. Among them, the component with the best characteristics are Mg2SnAg0.02+25at% Mg+4at% Mg2Si. The sample has a minimum resistivity of about 1 mΩ-cm, a maximum Seebeck coefficient of about 196 μV/K, and an overall maximum ZT of 0.13.
The N-type and P-type Mg2(SiSn) coupons with the best parameters were made into three groups of elements in two ways, and their thermoelectric properties were measured. Among them, the components are welded in series, and the maximum output power is 21.7482 μW. | en_US |