膜電極組中的貴金屬鉑觸媒是造成燃料電池材料成本過高的主因，本文致力於高活性鹼性Ni系非鉑觸媒的開發，包含陽極的NiRu/C及陰極的PdNNi非鉑觸媒，以修飾Watanabe法所製備兼具高氫氣氧化反應活性的NiRu/C非鉑陽極觸媒，電子效應及協同效應促使活性接近商業化鉑系觸媒，且具生產製程簡易且具可放大性的優點。另以濺鍍技術開發高氧還原反應活性的PdNNi非鉑陰極觸媒，電子轉移協同效應提升活性接近Pt觸媒，高活性非鉑觸媒在成本及性能上深具潛力，有機會取代高價及蘊藏量有限的鉑系觸媒。
另一研發重點為將非鉑鹼性觸媒導入膜電極組結構，NiRu/C非鉑陽極觸媒膜電極組之最大放電功率634 mW/cm2 (H2/O2)，是鉑觸媒性能的60%；非鉑觸媒膜電極組最大放電功率僅239 mW/cm2 (H2/O2)，因NiRu/C在高電流時出現的鈍化，造成氫氣氧化反應活性降低，導致膜電極組的放電性能無法繼續往上提升。PdNNi非鉑陰極觸媒之膜電極組之最大放電功率達1673 mW/cm2 (H2/O2)，是商業化鉑系觸媒膜電極組性能的1.66倍，膜電極組的傳質阻力降低及電子轉移協同效應促使PdNNi非鉑觸媒膜電極組展現出優異的放電性能。

The noble metal platinum catalyst in the membrane electrode assembly (MEA) is the main cause of the high cost of the fuel cell. The focus of this paper is on the development of highly-active nickel-based Pt-free catalysts, including NiRu/C of anode and PdNNi of cathode for anion exchange membrane fuel cells (AEMFC). The NiRu/C anode catalyst prepared by the modified Watanabe method shows high hydrogen oxidation reaction (HOR) activity and outstanding durability. The HOR activity close to the commercial Pt catalyst results from the electronic effect and synergistic effect. Meanwhile, the production process is simple and can be scaled up. The PdNNi cathode catalyst prepared by sputtering deposition show high oxygen reduction reaction (ORR) activity. The electronic effect enhances the ORR activity close to Pt catalyst. The highly active Pt-free catalysts of NiRu/C and PdNNi have great advantages in cost and performance and show great potential to replace Pt-based catalysts.
Another research focus is to introduce the developed Pt-free catalyst into a membrane electrode assembly. The maximum power density of the NiRu/C anode catalyst membrane electrode assembly is 634 mW/cm2 (H2/O2), which is 60% of the performance of the Pt-catalyst based membrane electrode assembly. The performance of the Pt free catalyst based MEA is not as expected and the maximum power density is only 239 mW/cm2 (H2/O2). Since NiRu/C is passivated at a high current density, which decreases the HOR activity at high overpotential and, results in less improvement in performance of the membrane electrode assembly. The maximum power density of the PdNNi cathode catalyst membrane electrode assembly is as high as 1673 mW/cm2 (H2/O2), which is 1.66 times of the performance of the commercial Pt-based membrane electrode assembly. It can be concluded that reduced mass transfer resistance and electron transfer synergistically contributed to the improved performance of PdNNi cathode electrode.

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