火焰熔射噴塗製備固態氧化物燃料電池陽極製程開發之研究

Development of Porous Ni/8YSZ anode of SOFC by the flame spray

曾涵政(Han-Cheng Tseng)

指導教授 ： 楊永欽

國立臺北科技大學/工程學院/材料科學與工程研究所/碩士(2014年)

https://doi.org/10.6841/NTUT.2014.00459

摘要

本研究首先將採用低溫低成本製程的火焰噴塗技術，研究的起始粉末主要粉末為氧化鎳(NiO)、純金屬鎳(Ni)與8%以安定氧化鋯(8YSZ)，並藉由噴霧造粒技術改善複合粉體的流動性及提高電化學反應之三相界面位置，最後噴塗於不銹鋼基材上，再進一步適當添加商用粉末鎳包覆石墨粉末(Ni-coated graphite)做為兩種用途，一方面提高孔隙率及透氣率，二方面提高陽極導電率，達到製備多孔性陽極的目的，並探討其對於塗層結構的性質影響。利用火焰噴塗技術製備的多孔陽極塗層中，經由場發射掃描式電子顯微鏡來分析表面形貌、橫截面及膜層變化等塗層性質影響，以及藉由孔隙率、氣體透氣率、塗層拉身試驗、熱膨脹及電性量測來評估最佳多孔陽極塗層。實驗結果顯示NiGr的添佳能有效提高陽極塗層內部孔隙率，並製造連通孔；此外更能提高塗層拉身強度、導電性及些微降低熱膨脹係數。

關鍵字

固態氧化物燃料電池陽極 ； 火焰噴塗技術

並列摘要

This study is to create a porous structure of anode coatings of solid oxide fuel cell by flame powder spray coating technology. Flame spraying method, with a reduced thermal stresses and the advantages of easy process, is relatively low temperature in the manufacturing process. In this investigation porous Ni/YSZ composite SOFC anode structures were produced by adding Ni coated graphite powder. The results showed that the porous structure of SOFC anode could be achieved by the flame spraying technique. Using NiO/8YSZ powder can be obtained uniform, flat, small pores and good adhesion coating. Using Ni/8YSZ powder can be obtained non-flat and multi-pores coating. Burning out graphite in anode coating can effectively increase porosity over 30 % and produce continuous pores. In addition to that, adding Ni in forms of NiGr particles results in an anode coating with a higher electrical conductivity and a slightly lower CTE.

並列關鍵字

Solid oxide fuel cell anode ； flame spray

參考文獻

[8] 伊寶廉，燃料電池-原理與應用，五南圖書出版公司，2005。

[1] S. Jamai Peighambardoust, Soosan Rowshanzamir, Mehdi Amjadi, “Review of the proton exchange membranes for fuel cell applications”, International Journal of Hydrogen Energy, 2010, 35, 9349–9384

[2] Guangyao Meng, Haizheng Song, Qiang Dong, Dingkun Peng, “Application of novel aerosol-assisted chemical vapor deposition”, Solid State Ionics, 2004, 175, 29–34.

[3] Bin Meng , Yue Sun, Xiaodong He, Jinhui Peng, “Fabrication and characterization of Ni–YSZ anode functional coatings by electron beam physical vapor deposition”, Thin Solid Films, 2009, 517, 4975–4978.

[4] Hwan Moon, Sun Dong Kim, Eon Woo Park, Sang Hoon Hyun, Ho Sung Kim, “Characteristics of SOFC single cells with anode active layer via tape casting and co-firing”, International Journal of Hydrogen Energy, 2008, 33, 2826–2833.