在科技快速發展的時代，我們面臨著大量能源消耗的問題，而化石能源一直是主要的能源來源。然而，近年來電動車的蓬勃發展表明各國都在積極探索替代化石能源的可能性。人們對環境保護的意識不斷提高，可再生能源也受到了更多關注，這使得熱電材料成為未來的關鍵技術。熱電材料可以回收廢熱，將浪費或多餘的熱能轉換為電能，從而提高總體能量轉換效率。這種材料的特性使其成為可再生能源的重要基礎。本實驗參考了前屆學長在N型Mg2(SiSn)熱電材料方面的實驗結果，進一步測試在混合不同比例的MgSi基礎上，進行金屬接觸的測試，我們通過粉末摻雜、混和、冷壓成型、高溫燒結和金屬接觸的銜接等步驟來製備熱電塊材，並實驗過程中我們對不同金屬接觸的熱電塊材進行了電性量測和分析，接著與實驗室的陳韋翰同學研究的P型Mg2(SiSn)熱電塊材進行了搭配，我們將這些材料組合起來，製備了單對的PN熱電元件，最終選擇了具有優異熱電性能的Mg2SiSn熱電塊材，並將其製作成熱電模組。;In the era of rapid technological development, we are faced with the problem of massive energy consumption, and fossil energy has always been the main source of energy. However, the vigorous development of electric vehicles in recent years shows that all countries are actively exploring the possibility of replacing fossil energy. Increasing awareness of environmental protection and increased attention to renewable energy sources make thermoelectric materials a key technology for the future. Thermoelectric materials can recover waste heat and convert wasted or excess thermal energy into electricity, thereby increasing the overall energy conversion efficiency. The properties of this material make it an important basis for renewable energy. This experiment refers to the experimental results of the previous seniors on N-type Mg_2(SiSn) thermoelectric materials. Further testing is based on mixing different proportions of MgSi to conduct metal contact tests. We use powder doping, mixing, cold pressing, high temperature sintering and metal contact joints are used to prepare thermoelectric bulk materials. During the experiment, we measured and analyzed the electrical properties of thermoelectric bulk materials with different metal contacts. Matching, a single pair of PN thermoelectric elements was prepared, and finally the Mg2SiSn thermoelectric block material with excellent thermoelectric properties was selected and made into a thermoelectric element.
