原子層沉積低白金觸媒層之質子交換膜燃料電池加速老化研究

The Study of PEMFC Accelerated Degradation in Ultra-low Platinum Catalyst Layer Fabricated by Atomic Layer Deposition

黃冠銘(Guan-Ming Huang)

指導教授 ： 翁芳柏

元智大學/工程學院/機械工程學系/碩士(2012年)

摘要

隨著時代進步，燃料電池的應用範圍也越來越廣，可用在發電機也可用在交通載具上。燃料電池在不同應用端和不同使用方式，也會影響膜電極組壽命的長短。動態負載伴隨很多不同的效應，對膜電極組有加速老化的效果，以利短時間內達到老化目標。為了探討老化的影響，本論文利用循環電流動態負載的方式作為加速老化機制。
現今燃料電池遇到的問題為觸媒所需的白金價格昂貴，成本居高不下，加上壽命未達到一個可靠驗證，而本實驗以超音波噴塗法(ultrasonic-spray)製作(catalyst coated membrane, CCM)，並與清華大學薛仰志同學以原子層沉積技術(atomic layer deposition, ALD)所製作的GDE進行製備方法之探討，找到最佳化的白金負載量並使用動態負載的方式達到100小時的老化測試。

關鍵字

動態負載 ； 加速老化 ； 原子層沉積技術

並列摘要

The progress of this era has led to extensive applications using proton exchange membrane fuel cell (PEMFC). PEMFC can be used on power generators and can also be used in automotive applications. The effect PEMFC has on the lifetime of membrane electrode assembly (MEA) varies with different applications and conditions. However, applying different dynamic loads led to an accelerated degradation of MEA within a short amount of time. The current cycle from dynamic load was used to investigate the effects of this degradation.
The experiment used ultrasonic-spray to make catalyst coated membrane while Yang-Zhi Xue at Tsinghua University made gas diffusion electrode (GDE) with atomic layer deposition. In order to compare these two differences in the manufacturing process, the experiment found the optimal Pt loading and the applied dynamic load for 100 hours.

並列關鍵字

dynamic load，accelerating degradation，atomic layer deposition

參考文獻

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