應用於陰離子交換膜水電解器之三元非貴金屬觸媒開發;Non-Noble Metal Catalyst NiFeMn for Anion Exchange Membrane Water Electrolyze

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题名:	應用於陰離子交換膜水電解器之三元非貴金屬觸媒開發;Non-Noble Metal Catalyst NiFeMn for Anion Exchange Membrane Water Electrolyze
作者:	張欣雅;Chang, Hsin-Ya
贡献者:	化學工程與材料工程學系
关键词:	氫能;非貴金屬觸媒;電觸媒;尖晶石結構;陰離子交換模水電解器;產氫產氧反應
日期:	2024-07-29
上传时间:	2024-10-09 15:26:33 (UTC+8)
出版者:	國立中央大學
摘要:	鑒於對化石燃料高度依賴導致環境問題日益嚴重的時代，探索乾淨且可再生的能源勢在必行。由於氫能具有可持續性、轉換的效率高、能量密高度等優點，近年來受到廣泛的關注。目前，以水為豐富資源的電催化水分解是一種無碳、高純度且可持續的產氫策略。然而設計一個地球上儲存量豐富且具有高活性及穩定性的電觸媒對於工業級大規模水分解氫氣體至關重要。本研究中，透過快速雷射脈衝鹽類合成法生產出低成本和高性能的NiFeMn 三元陶瓷觸媒，此製程有效且快速地設計出尖晶石結構，並透過錳的摻雜，顯著地降低了析氧反應 (OER) 的能階。此外，在研究中進一步的研究了三元觸媒之最佳比例，在錳的比例達到鎳及鐵的兩倍時，擁有較低的起始電位及過電勢，根據循環伏安法 (CV)測試啟始電位為 1.495V (對比可逆氫電極，RHE)，並在三電極的測試中，我們所獲得的NiFeMn/NF 在電流密度 10 mA/cm2 下只須 282 mV 的低過電位，並於恆流充電的測試方式在 100 mA/cm2 下穩定運行超過 1500 小時。綜上所述，NiFeMn 三元陶瓷觸媒展現了在電催化水分解中的優勢。其優異的性能具有潛在的應用前景，為未來的工業化提供了新的可能性。;Hydrogen energy has attracted widespread attention in recent years due to its sustainability, high conversion efficiency, and high energy density. Currently, electrocatalytic water splitting is a carbon-free, high-purity, and sustainable hydrogen production strategy. However, the design of an earth-abundant electrocatalyst with high activity and stability is crucial for industrial-scale hydrogen gas production via water electrolysis. In this study, a low-cost and high-performance NiFeMn ternary ceramic catalyst was produced by rapid laser pulse salt synthesis method (PLMS). This process effectively and rapidly produced a spinel structure, which significantly reduced the energy levels of the oxygen evolution reaction (OER) through manganese doping. Furthermore, the optimal ratio of the ternary catalyst was further investigated in the study. When the manganese ratio reached twice that of nickel and iron, it exhibited lower onset voltage and overpotential. According to cyclic voltammetry tests, the on-set potential was 1.495V (vs. reversible hydrogen electrode, RHE) of NiFeMn. In a conventional three-electrode setup tests, the NiFeMn@NF obtained a low overpotential of only 282 mV at a current density of 10 mA/cm². Moreover, it operated for over 1500 hours at a constant current density of 100 mA/cm² in chronoamperometry tests. In summary, the NiFeMn ternary ceramic catalyst demonstrates advantages in electrocatalytic water splitting. Its excellent performance provides new possibilities for future industrialization.
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