探討元素摻雜與 急冷懸鑄法對高錳矽化物之熱電性質影響

以作者查詢圖書館館藏

、以作者查詢臺灣博碩士

、以作者查詢全國書目

、勘誤回報

、線上人數：119

、訪客IP：18.189.170.227

姓名

蔣明勳(Ming-Xun Jiang) 查詢紙本館藏

畢業系所

材料科學與工程研究所

論文名稱

探討元素摻雜與急冷懸鑄法對高錳矽化物之熱電性質影響
(Explore the Effects of Element Doping and Melt-Spinning on Thermoelectric Properties of Higher Manganese Silicide)

相關論文

★ 鋅空氣電池之電解質開發	★ 添加石墨烯助導劑對活性碳超高電容電極性質的影響
★ 耐高壓離子液體電解質	★ 熱裂解法製備RuO2-Ta2O5/Ti電極應用於離子液體電解液
★ 碳系超級電容器用耐高壓電解液研發	★ 離子液體與碸類溶劑混合型電解液應用於鋰離子電池矽負極材料
★ 三元素摻雜LLTO混LLZO應用鋰離子電池	★ 以濕蝕刻法於可撓性聚亞醯胺基板製作微通孔之研究
★ 以二氧化釩奈米粒子調變矽化鎂熱電材料之性能	★ 可充電式鋁電池的 4-ethylpyridine–AlCl3電解液、規則中孔碳正極材料以及自放電特性研究
★ 釹摻雜鑭鍶鈷鐵奈米纖維應用於質子傳輸型陶瓷電化學電池空氣電極	★ 於丁二腈電解質添加碳酸乙烯酯對鋰離子電池性能之影響
★ 多孔鎳集電層應用於三維微型固態超級電容器	★ 二氧化錳/銀修飾奈米碳纖維應用於超級電容器
★ 氧化鎳-鑭鍶鈷鐵奈米纖維陰極電極應用於質子傳導型固態氧化物電化學電池	★ 應用丁二腈基離子導體修飾PVDF-HFP 複合聚合物電解質與鋰電極界面之高穩定鋰離子電池

檔案

[Endnote RIS 格式]

[Bibtex 格式]

[相關文章]

[文章引用]

[完整記錄]

[館藏目錄]

[檢視]

[下載]

本電子論文使用權限為同意立即開放。
已達開放權限電子全文僅授權使用者為學術研究之目的，進行個人非營利性質之檢索、閱讀、列印。
請遵守中華民國著作權法之相關規定，切勿任意重製、散佈、改作、轉貼、播送，以免觸法。

摘要(中)

熱電材料能夠直接轉換熱能及電能，適合廢熱回收及無震動冷卻方面的應用。其中高錳矽化物(HMS)被視作在中高溫環境中一有潛力的P型熱電材料，其具有許多優點:元素含量充足、熱穩定性佳、對環境無害……等等，其應用性往往受限於其熱電轉換效率不佳及製造成本過高，始終無法被廣泛應用。本研究透過兩種策略來提高了HMS的熱電性能。第一個研究探討錫摻雜(Mn(Si1-xSnx)1.75, x = 0, 0.001, 0.005, 0.01, 0.015)對HMS系統的影響，此研究試樣是透過電弧熔煉和火花電漿燒結(SPS)等製程來製備。透過分析可觀察到錫在 x ≥ 0.005 時於基材中析出，可推論其溶解極限約為 x = 0.001。而以錫取代矽的方式會引入點缺陷，其造成的散射顯著降低了HMS的晶格熱導率。x = 0.001樣品的晶格熱導率值在750 K時降至此材料系統的最小值 2.0 W/mK，與未摻雜的 HMS 之值相比大幅降低了 47.4%。並在750 K時測得的熱電優值(ZT)約為0.31。
接續第一個研究的成果，第二個研究利用急冷旋鑄的方式來製備薄帶狀的高錳矽化物，隨後以火花電將燒結的方式製備一奈米化塊材。此材料系統會引入奈米晶界，會增加低/中波長的聲子散射。此材料系統的錫的溶解度大約落在x=0.0025左右。結合上述兩種引入缺陷造成聲子散射的方式，會造成此材料系統的熱導率於750℃大幅下降至1.30 W/mK，其ZT值有效提升至0.482，與純相相比約有60%的提升。

摘要(英)

Higher manganese silicides (HMS) are regarded as promising p-type thermoelectric materials in the mid-temperature range, owing to their earth-abundance and thermal stability. The limited thermoelectric performance of HMS in terms of their low figure-of-merit (ZT), is the main bottleneck for realizing an efficient HMS-based thermoelectric generator. We report significant enhancement in the thermoelectric performance of HMS with two strategies. The first one explores the impact of tin doping on the HMS system, which was synthesized via an arc-melting process and spark plasma sintering (SPS). Our findings reveal that metallic Sn precipitates within the Mn(Si1-xSnx)1.75 matrix at x ≥ 0.005, with a determined solubility limit of approximately x = 0.001. In addition, substituting Si with Sn effectively reduces the lattice thermal conductivity (kL) of HMS by introducing point defect scattering. In contrast to the undoped HMS, kL decreases to a minimum value of 2.0 W/mK at 750 K for the Mn(Si0.999Sn0.001)1.75 sample, marking a substantial 47.4% reduction. Consequently, a figure of merit (ZT) value of ~ 0.31 is attained at 750 K.
Following the results of the first study, the second one used melt-spinning to prepare ribbons of HMS and then used SPS to prepare a nanobulk. This material system will introduce nanograin boundaries, which will increase the scattering of low/medium wavelength phonons. The solubility of tin in this system is around x = 0.025. Combining the above two methods, the kL of this material system drops significantly to 1.30 W/mK at 750°C, and its ZT is effectively increased to 0.482.

關鍵字(中)

★ 高錳矽化合物
★ 熱電性質
★ 元素摻雜
★ 急冷旋鑄法

關鍵字(英)

★ Higher Manganese Silicide
★ Thermoelectric Properties
★ Element Doping
★ Melt-Spinning

論文目次

Abstract I
摘要 II
誌謝 III
Contents IV
List of figures VI
Chapter 1 Introduction 1
1.1Thermoelectric effects 1
1.2 Thermoelectric module operation 3
1.3 Thermoelectric silicides 4
1.4 Manganese silicides (HMS) 5
1.4.1 Crystal structure of HMS 5
1.4.2 Band structure of HMS 6
1.5 Motivation 8
Chapter 2 Literature review 9
2.1 Strategies for thermoelectric property enhancement 9
Chapter 3 Experiment 10
3.1 Material preparation 10
3-1-1 Synthesis of Sn-substituted bulk HMS 10
3-1-2 Synthesis of Sn-substituted HMS nanobulk 12
3.2 Microstructure characterization 13
3.3 Measurement of thermoelectric properties 14
3.3.1 Carrier concentration and mobility 14
3.3.2 Electrical conductivity and Seebeck coefficient 14
3.3.3 Thermal conductivity 16
Chapter 4 Results and discussion 17
4.1 Material Characterizations of Sn-Substituted HMS 17
4-2 TE Properties of Sn-Substituted HMS 24
4-3 Material Characterizations of Sn-substituted HMS nanobulk 29
4-4 Thermoelectric performance analysis of Sn-substituted HMS nanobulk 31
Chapter 5 Conclusions and future prospects 36
5.1 Conclusion 36
5.2 Future prospects 37
References 38

參考文獻

alkner, R., The Paris Agreement and the new logic of international climate politics.
International Affairs, 2016. 92(5): p.1107–1125.
2. Annalisa, S., The Paris Agreement: a new beginning? J. Energy Nat. Resour. Law, 2016. 34(1): P.16-26.
3. Adnan, M., Ibrahim, D., and Murat, A., Green energy strategies for sustainable development. Energy Policy, 2006. 34(18).
4. Mohamed, A. Z., Saïd, B., John ,G. S., and Mahmoud, B., A Review on Thermoelectric Generators: Progress and Applications. Energies 2020, 13(14) : p.3606.
5. Hyun, S., K., Zachary, M. G., Yinglu, T., Heng, W., and Jeffrey, S., Characterization of Lorenz number with Seebeck coefficient measurement. APL Mater, 2015, 3, 041506.
6. Drebushchak, V., A., The Peltier effect. J. Therm. Anal. Calorim, 2008, 91:0.311-p.315.
7. Mei, J. H., Ruey, H, Y., and An, B. W., The influence of the Thomson effect on the performance of a thermoelectric cooler. Int. J. Heat Mass Transf, 2005, 48(2):p.413-418.
8. Jeffrey, S., and Alemayouh, H. S., Figure of merit ZT of a thermoelectric device defined from materials properties. Energy Environ. Sci, 2017, 10: p.2280-2283.
9. Gerald., J. S., Alessandro, P., and Ramya, G., Effective Mass from Seebeck Coefficient. Adv. Funct. Mater, 2022, 32(20); p. 2112772.
10. Nozariasbmarz, A., A. Agarwal, Z.A. Coutant, M.J. Hall, J. Liu, R. Liu, A. Malhotra, P. Norouzzadeh, M.C. Öztürk, V.P. Ramesh, Y. Sargolzaeiaval, F. Suarez, and D. Vashaee, Thermoelectric silicides: A review. Japanese Journal of Applied Physics, 2017. 56(5S1): p. 05DA04.
11. Fredrickson, D.C., S. Lee, and R. Hoffmann, The Nowotny chimney ladder phases: Whence the 14 electron rule? Inorganic Chemistry, 2004. 43(20): p. 6159-6167.
12. Girard, S.N., X. Chen, F. Meng, A. Pokhrel, J.S. Zhou, L. Shi, and S. Jin, Thermoelectric Properties of undoped high purity higher manganese silicides grown by chemical vapor transport. Chemistry of Materials, 2014. 26(17): p. 5097-5104.
13. Amatya, R. and R.J. Ram, Trend for Thermoelectric materials and their earth abundance. Journal of Electronic Materials, 2012. 41(6): p. 1011-1019.
14. Van Smaalen, S., Incommensurate crystal structures. Crystallography Reviews, 1995. 4(2): p. 79-202.
15. Nishida, I., K. Masumoto, I. Kawasumi, and M. Sakata, Striations and crystal structure of the matrix in the MnSi-Si alloy system. Journal of the Less Common Metals, 1980. 71(2): p. 293-301.
16. Kawasumi, I., M. Sakata, I. Nishida, and K. Masumoto, Crystal growth of manganese silicide, MnSi∼1.73 and semiconducting properties of Mn15Si26. Journal of Materials Science, 1981. 16(2): p. 355-366.
17. Knott, H., W., Mueller, M., H., and Heaton, L., Mn4Si7 crystal structure. Acta Crystallogr.1967. 23: p. 549-555.
18. Liu, W., D., Chen, Z., G., and Zou, J., .Eco-Friendly Higher Manganese Silicide Thermoelectric Materials: Progress and Future Challenges. Adv. Energy Mater. 8(19): p. 1800056

指導教授

李勝偉(Sheng-Wei Lee)

審核日期

2024-8-20

推文