本研究使用40wt%高離子導共摻雜系統材料(Zr0.92Y0.155M0.005O2.0775，M= Mg，Ca，Sr)與60wt%催化金屬鎳開發出改良陽極，並與常用陽極(Ni-YSZ)做比較。陽極膠體網印於商用釔安定氧化鋯(HWA 8YSZ)之電解質基材，並燒結1350oC持溫40分鐘，陰極(Pt-YSZ)部分則以白金與釔安定氧化鋯複合物為主，最後經過800oC下還原兩個小時形成導電陽極，完成SOFC之半電池結構(Half Cell)。利用XRD與SEM分析結晶性和微結構，而交流阻抗分析對陽極導電性質與催化活性進行研究，最後測量半電池之功率密度(power density)。
從交流阻抗圖中的極化電阻結果指出，Ni-MgYSZ在800oC下擁有最低的極化電阻(1.577 ohm-cm2)，較其他陽極能夠降低界面之極化損失。整體最低的極化電阻為Ni-MgYSZ，其次分別Ni-CaYSZ < Ni-SrYSZ < Ni-YSZ，此結果解釋以高離子導之共摻雜系統製作改良陽極，確實有降低電極在電解質與燃料間的極化損失。
在相同氣氛(5%H2-95%N2)中分析鐵弗曲線，改良電極Ni-MgYSZ之交換電流密度(0.0344 A/cm2，logi0)值無論是高溫或是低溫範圍皆明顯較其他電極要高。在高溫範圍(700-800oC)，logi0值是Ni-CaYSZ的較Ni-SrYSZ大，最小的是Ni-YSZ，由此可知相同條件下以高離子導之共摻雜系統設計的改良陽極除了降低極化阻抗，更提升了電極對燃料氣氛下的催化能力。而有趣的是，發現交換電流密度(logi0)與極化電阻(Rp)具有相依性，也就是較低的極化損失讓帶電粒子(O2-與e-)在陽極與界面(陽極與電解質)容易傳遞，使得三相點催化能力提升，並釋放出更多電子，以改良陽極設計的概念說明之，共摻雜系統之添加有助於三相點之電化學反應。
改良電極之循環伏安曲線皆呈現遲滯曲線(hysteresis loop)，表示其因為本身極為優秀的離子導電性和觸媒活性，降低氫催化反應(H2-->2H++2e-)與氧離子氧化反應(O2--->O2+2e-)的極化阻抗，使得其正掃時斜率變大，比常用陽極Ni-YSZ特性優秀。因此可見改良電極不但具有較大的遲滯曲線，亦能提升燃料電池之發電效能。
從交流阻抗分析與催化性分析(鐵弗曲線與循環伏安法)的結果指出，本次實驗設計的高離子導共摻雜系統製作之改良陽極比較常用陽極(Ni-YSZ)可降低極化損失，又能提升三相點的催化活性，勢必能提升單電池的發電效益。本實驗半電池在800oC發出最高的功率密度(Power density)的陽極為所預期最佳電性之Ni-MgYSZ (34.54mW/cm2)，為常用的1.23倍，其次分別Ni-CaYSZ >Ni-SrYSZ > Ni-YSZ，此結果印證了實驗設計與分析結果。

Catalytic properties of newly modified anodes, mixture of 40 wt% high ionic conductivity co-doping zirconia materials (Zr0.92Y0.155MxO2.0775, M= Mg, Ca, Sr) and 60wt% catalytic particle Ni was analyzed from the information of Tafel, current-overpotential and cyclic voltammetry curves and power density of half cell employing novel anodes were investigated in this work. Experimental results show that the polarization resistance of Ni-YSZ was reduced from 2.32 Ω-cm2 to 1.577 Ω-cm2 by substituting 8mol% yttria doped zirconia (YSZ) to Zr0.92Y0.155Mg0.005O2.0775 (MgYSZ) at 800oC, because of increasing the amount of triple phase boundary (TPB) and decreasing of activation energy of oxygen ion migration in YSZ was observed by modifying appropriate elements to YSZ. It is good for enhancing the velocity of oxygen ion migration in YSZ crystal and that of electrochemical reactions, containing oxygen ion oxidation and combination of oxygen and hydrogen cation to be water in modified anode. The catalytic activity of modified anode correlated with the value of exchange current density (logi0) identified from Tafel plots under 5% H2 condition. The exchange current densities of modified anodes are higher than that of Ni-YSZ at 800oC. Comparing the best catalytic activities of modified anodes, the result exhibits Ni-MgYSZ> Ni-CaYSZ> Ni-SrYSZ> Ni-YSZ and therefore the catalytic activity of anode depends on the ionic conductivity of co-doping zirconia in modified anode Besides, it is found that there are some correlations between logi0 and Rp, increasing of exchange current density and decreasing of polarization loss were observed due to mass transfer of oxygen ion and charge transfer easy in modified anodes. The electrochemical reactions of anodes were determined by using cyclic voltammetry method, the area of occurring hysteretic loop increases with an increase of activity of anode, it is attributed to that the formation of oxygen ionic oxidation (O2-O2+2e-) easy.
Finally, the highest power density of the half cell Ni-MgYSZ/YSZ/Pt reference cathode (34.54 mW/cm2) is 23% higher than that of Ni-YSZ/YSZ/Pt reference cathode (28.02 mW/cm2) at 800oC, and the tendency of power density of modified anode is similar to that of activity variation of anode, resulting that the performance of fuel cell could be enhanced by employing modified anodes with high ionic conductivity of zirconia materials in Ni-YSZ.

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