水熱合成析氧反應電催化觸媒及其在鹼性膜電解水中的應用

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姓名

王儷穎(Li-Ying Wang) 查詢紙本館藏

畢業系所

材料科學與工程研究所

論文名稱

水熱合成析氧反應電催化觸媒及其在鹼性膜電解水中的應用
(Hydrothermal Synthesis of Oxygen Evolution Reaction Electrocatalysts and Its Application in Alkaline Membrane Water Electrolysis)

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至系統瀏覽論文 (2027-9-1以後開放)

摘要(中)

利用可再生能源電解水產氫是一種理想且環保的氫能獲取途徑。目前主要有三種低溫電解水產氫技術：鹼性電解水（Alkaline Water Electrolyzer, AWE）可使用非貴金屬觸媒，但反應效率較低、能耗較高；質子交換膜電解水（Proton Exchange Membrane Water Electrolyzer, PEMWE）反應快速、能耗低，但需使用昂貴的貴金屬觸媒；而陰離子交換膜電解水（Anion Exchange Membrane Water Electrolyzer, AEMWE）技術則被視為一種新興的有前景方向，它兼具AWE和PEMWE的優點，可在獲得高電流密度和低能耗的同時，使用廉價且儲量豐富的非貴金屬觸媒，有望大幅降低產氫成本，因此備受關注。
本文主要研究用於AEMWE所需的陽極觸媒，文獻報導過渡金屬鐵和鎳是具有良好催化性能的元素，為了增加催化活性或是穩定性，我們在製備過程中添加了鈷或錳，以水熱法在基板上製成FeNiCo或FeNiMn觸媒。經過參數的調控，成功製備出高效能的析氧反應電催化材料，並將其組裝成膜電極，進行性能測試。首先採用水熱合成法，成功製備出非貴金屬自支撐陽極觸媒電極。將所製備的FeNiCo/Ni mesh電化學測試，該觸媒僅需298 mV的過電位，反應出其一定的催化能力。隨後將此應用於AEMWE整體裝置的組裝。在200 mA/cm2的電流密度下，所需的電解電壓僅為1.69 V。經過200小時的長期測試，當工作電壓為2 V時，電流密度僅增加13 mA/cm2，展現了穩定性。後續也進行以鎳網基板作為陰極，搭配自製水熱合成的FeNiCo/Ni mesh陽極，組裝全非貴金屬的AEMWE。在工作電壓為2 V的條件下，該電流密度可達507 mA/cm2，顯示具備在電解水產氫領域中一定的應用潛力。

摘要(英)

Utilizing renewable energy for water electrolysis to produce hydrogen is an ideal and environmentally friendly approach to obtain hydrogen energy. Currently, there are three main low-temperature water electrolysis technologies for hydrogen production: alkaline water electrolysis(AWE) can use non-precious metal catalysts, but has relatively low reaction efficiency and high energy consumption; proton exchange membrane water electrolysis(PEMWE) has fast reaction and low energy consumption, but requires expensive precious metal catalysts; while anion exchange membrane water electrolysis(AEMWE) is considered an emerging and promising direction, combining the advantages of AWE and PEMWE. It can achieve high current density and low energy consumption while using inexpensive and abundant non-precious metal catalysts, potentially significantly reducing the cost of hydrogen production, and thus receiving increasing attention.
This work mainly investigates the anode catalysts required for AEMWE. Previous literature reports that transition metals iron and nickel possess good catalytic performance, and to enhance the catalytic activity or stability, we added cobalt or manganese elements during the preparation process, and used a hydrothermal method to synthesize FeNiCo or FeNiMn catalysts on substrates. Through such tuning, highly efficient oxygen evolution reaction(OER) electrocatalytic materials were successfully prepared and assembled into membrane electrodes for performance testing of AEMWE.
First, a non-precious metal self-supported anode catalyst was successfully prepared using the hydrothermal synthesis method. When the prepared FeNiCo/Ni mesh anode catalyst was placed in 1 M KOH for OER electrochemical testing, it only required an overpotential of 298 mV, reflecting its certain OER catalytic ability. Subsequently, it was applied to the assembly of the overall AEMWE device. With the FeNiCo/Ni mesh as the anode and commercial Pt/CP as the cathode, at a current density of 200 mA/cm2, the required electrolysis voltage was only 1.69 V, and after 200 hours of long-term stability testing, when the operating voltage was 2 V, the current density only increased by 13 mA/cm2, demonstrating its stability. Additionally, an all-non-precious metal AEMWE was assembled using a nickel substrate as the cathode and the self-prepared hydrothermally synthesized FeNiCo/Ni mesh as the anode. Under an operating voltage of 2 V, the current density could reach 507 mA/cm2, showing potential for application in the field of water electrolysis for hydrogen production.

關鍵字(中)

★ 析氧反應
★ 水熱法
★ 膜電極製備
★ 陰離子交換膜水電解器

關鍵字(英)

★ oxygen evolution reaction
★ hydrothermal method
★ anion exchange membrane water electrolyzer
★ membrane electrode assembly

論文目次

摘要 I
Abstract II
誌謝 IV
目錄 V
圖目錄 VIII
表目錄 X
第一章緒論 1
1-1 前言 1
1-2 ESG指標 2
第二章文獻回顧 3
2-1 水熱法製成催化觸媒研究概況 3
2-1-1 水熱法簡述 3
2-1-2 非金屬觸媒 4
2-1-3 過渡金屬觸媒 5
2-2 低溫水電解器技術概況 6
2-2-1 鹼性水電解槽（AWE） 7
2-2-2 質子交換膜水電解器（PEMWE） 8
2-2-3 陰離子交換膜水電解器（AEMWE） 10
2-3 AEMWE電解槽結構與膜電極系統 12
2-3-1 電解槽結構 12
2-3-2 膜電極製備方法 15
2-3-3 本文研究的方向 17
第三章實驗方法 19
3-1 實驗架構與藥品 19
3-2 電極製備 21
3-3 膜電極製備 21
3-4 分析儀器 22
3-4-1 掃描式電子顯微鏡（FE-SEM） 22
3-4-2 感應耦合電漿光學發射光譜儀（ICP-OES） 22
3-4-3 X-ray繞射分析儀（XRD） 22
3-4-4 X-ray光電子光譜儀（XPS） 23
3-4-5 電化學量測系統（CHI） 23
第四章結果與討論 24
4-1 水熱法合成三元觸媒 24
4-1-1 表面形貌分析 24
4-1-2 元素分析 26
4-1-3 電化學性能分析 30
4-2 AEMWE性能測試 32
4-2-1 電解液對AEMWE性能的影響 32
4-2-2 陽極觸媒對AEMWE性能的影響 34
4-2-3 陰極觸媒對AEMWE性能的影響 37
第五章結論與未來工作 42
5-1 結論 42
5-2 未來工作 43
參考文獻 45

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指導教授

洪緯璿(Wei-Hsuan Hung)

審核日期

2024-7-29

推文