固態氧化物電解電池之電解質材料開發

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姓名

謝煜彬(Yu-Pin Hsieh) 查詢紙本館藏

畢業系所

機械工程學系

論文名稱

固態氧化物電解電池之電解質材料開發
(Development of Electrolyte Materials for Solid Oxide Electrolysis Cell)

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摘要(中)

本研究主要探討用於高溫離子傳導固態氧化物電解電池的電解質材料
開發，使用常見的釔穩定氧化鋯(YSZ)做為基礎，摻雜二氧化鈦(TiO2)和釤
摻雜氧化鈰(SDC)來製備成電解質，通過不同的煆燒溫度、壓錠壓力、壓錠
時間和燒結溫度來探討電池的微觀結構和機械性質，使用網印法製備出陰
陽極，其陰極材料為鎳-氧化釔穩定氧化鋯(Ni-YSZ)，陽極則為鈣鈦礦型氧
化物材料鑭鍶錳(LSM)，在陰極端通氫氣陽極端通氧氣進行發電觀察其性能，
最後在陰極端通二氧化碳進行電解並觀察其性能。
本研究發現YSZ 摻雜TiO2 和SDC 後可以降低其燒結溫度，並獲得較
大較完整的晶粒，在預燒溫度在1250 ºC、壓錠壓力294 MPa、壓錠時間5
分鐘、燒結溫度1550 ºC 時可以得到最大晶粒尺寸、平均粒徑為50.38 μm、
維克氏硬度值1183.5 HV、在1000 ºC 時熱膨脹係數為8.25 10-6/K、電池電
解性能在1000 ºC 下電壓1.5 V 時電流密度為631 mA/cm2。

摘要(英)

In this study, we investigate the electrolyte materials for high temperature
solid oxide electrolysis cells. The electrolyte is prepared by using yttriumstabilized
zirconia (YSZ) as the basis, doped with titanium dioxide (TiO2) and
samarium doped cerium oxide (SDC). The microstructure and mechanical
properties of the electrolyte are investigated for different pre-sintering
temperature, the uniaxial pressure and pressurized duration for producing pellets,
and sintering temperature.
The cathode and anode are prepared by screen printing. The cathode material
is nickel-yttria stabilized zirconia (Ni-YSZ), and the anode material is lanthanum
strontium manganese (LSM) perovskite material. The cell performance is
measured in power generation mode by supplying hydrogen to Ni–YSZ electrode
and oxygen to LSM electrode. The performance in electrolysis mode is measured
by supplying carbon dioxide to Ni-YSZ electrode.
Results show that YSZ doped TiO2 and SDC can reduce the sintering
temperature. Electrolytes with large grains, averaged at 50.4 μm, can be obtained
using a pre-sintering temperature of 1250 ºC, a pressure of 294 MPa for 5 minutes
for producing pellets, and a sintering temperature of 1550 ºC. In addition, the
thermal expansion coefficient at 1000 ºC is 8.25 10-6 /K, the Vickers hardness
value is 1183.5 HV. The current density of the cell is 631 mA/cm2 at 1.5V and 1000 ºC in the electrolysis mode.

關鍵字(中)

★ 高溫
★ 離子傳導
★ 固態氧化物電解電池
★ 氧化釔穩定氧化鋯
★ 釤摻雜氧化鈰
★ 熱膨脹係數
★ 維克氏硬度值

關鍵字(英)

★ high temperature
★ ionic conductivity
★ solid oxide electrolysis cell
★ yttria-stabilized zirconia
★ samarium doped cerium oxide
★ thermal expansion coefficient
★ Vickers hardness value

論文目次

中文摘要 ................................................................................................................ I
Abstract ................................................................................................................ II
致謝 ..................................................................................................................... IV
目錄 ...................................................................................................................... V
表目錄 .............................................................................................................. VIII
圖目錄 ................................................................................................................. IX
第一章緒論 ........................................................................................................... 1
1.1 前言 ........................................................................................................ 1
1.2 固態氧化物電解電池(SOEC)基本原理 ............................................... 2
1.2.1 固態氧化物燃料電池之工作原理 .............................................. 2
1.2.2 固態氧化物電解電池之工作原理 ............................................. 4
1.2.3 固態氧化物電解電池之熱力學分析 ......................................... 5
第二章文獻回顧 ................................................................................................... 8
2.1 固態氧化物電解電池技術發展沿革 .................................................... 8
2.2 固態氧化物電解電池結構與材料 ...................................................... 10
2.2.1 固態氧化物電解電池結構 ....................................................... 10
2.2.2 固態氧化物電解電池材料 ....................................................... 11
VI
2.3 研究動機 .............................................................................................. 14
第三章實驗方法 ................................................................................................. 15
3.1 實驗儀器設備 ...................................................................................... 15
3.1.1 試片油壓機 ............................................................................... 15
3.1.2 行星式球磨機 ........................................................................... 15
3.1.3 SOEC 測試平台......................................................................... 16
3.2 實驗樣品與流程 .................................................................................. 17
3.2.1 粉末與藥品規格 ....................................................................... 17
3.2.2 粉末製備流程 ........................................................................... 18
3.2.3 全電池製備流程 ....................................................................... 21
3.2.4 燒結速率 ................................................................................... 24
3.3 檢測實驗 .............................................................................................. 25
3.3.1 X 光繞射儀(X-Ray Diffraction, XRD) ..................................... 25
3.3.2 掃描式電子顯微鏡(Scanning Electron Microscope, SEM) .... 25
3.3.3 熱機械分析儀(Thermomechanical Analysis, TMA) ............... 26
3.3.4 維克氏硬度試驗機(Vickers hardness testing machine) .......... 27
3.3.5 電性分析 ................................................................................... 27
第四章結果與討論 ............................................................................................. 29
4.1 煆燒溫度對晶粒的影響 ....................................................................... 29
VII
4.2 壓錠壓力對晶粒的影響 ...................................................................... 32
4.3 壓錠時間對晶粒的影響 ...................................................................... 34
4.4 燒結溫度對晶粒的影響 ...................................................................... 35
4.5 TiO2 與SDC 對晶粒的影響 ................................................................. 38
4.6 電解質材料對熱膨脹係數與硬度的影響 ........................................... 44
4.7 發電與電解性能分析 .......................................................................... 47
第五章結論與未來工作 ..................................................................................... 50
5.1 結論 ...................................................................................................... 50
5.2 未來工作 .............................................................................................. 51
參考文獻 ............................................................................................................. 52

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指導教授

曾重仁(Chung-jen Tseng)

審核日期

2017-7-21

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