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  • 學位論文

燃料電池應用於生物醫學科技之可行性探討

Feasibility Studies of Fuel Cells Applying on Biomedical Technologies

指導教授 : 婁世亮
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摘要


近幾年,生物技術一直被視為二十一世紀全球明星產業之一。其相關研究如基因複製、基因治療等都需要大量細胞做為探討的材料,因此細胞培養系統是從事生物科技研發不可或缺的設備。此外,觀察特定生物分子於活細胞內之傳送與轉換也是生物科技重要的研究課題,據此,長時間維持細胞正常存活並配合影像技術紀錄活細胞是從事這類研究的重要課題。典型細胞培養系統需要具有37 ℃溫控、95 %溼度和5 %二氧化碳濃度控制以維持恆定培養基酸鹼度。 除了生物技術,再生能源也是全球熱門的研究議題。燃料電池便是眾多再生能源研究下重要的成果之一。直接甲醇燃料電池(DMFC)技術除提供直流電源輸出之外,所使用甲醇燃料經過電化學反應後會產生排放物「水」與「二氧化碳」。這些物質恰與細胞培養系統所需條件相符,吾人認為直接甲醇燃料電池可應用於該系統之上。 本研究就燃料電池之產物如電能、水與二氧化碳進行量化分析。實驗採用5片交換膜串聯的電池堆,每一電池的薄膜電極為商購之Nafion-117 高分子薄膜;陽極觸媒含有Pt-Ru/C 4 mg/cm2,陰極觸媒則有Pt/C 4 mg/cm2,並在外層覆蓋碳布。實驗條件以定功率4 W進行。結果顯示,以300 ml甲醇為燃料混以空氣的氧,所收集之二氧化碳濃度可達65 %。又分別於陽極和陰極,匯集得280 ml與36 ml的水。其最主要的產物,電壓為直流2V/2A穩態輸出,可持續提供81分鐘的電能。 根據本研究對甲醇燃料電池產物量化探討的結果,吾人認為這類的燃料電池相當具有與生物反應器、細胞培養箱和顯微鏡活細胞密室結合的潛能。

並列摘要


Recently, biotechnology (or biotech) will be the “star industry” in 21st century globally. Tremendous resource and effort have been poured into biotech research in all kinds. Examples are gene clone, gene therapy, and molecular imaging. It must be noted that these types of research require large amount of cells to conduct studies. As a result, systems for culturing cells become essential. Common environment requirements of the systems are 37 ℃, 95 % humidity and 5 % carbon dioxide (CO2). Reusable energy is another hot research area in the world. Fuel cell is one of the important outcomes in this area. For example, direct methanol fuel cell (DMFC) has great potential to play important role as an energy resource in the near future. In addition to its generation of electricity, DMFC also produces water and CO2. From the cell culture point of view, the products of DMFC are just as useful as the electricity. We believe the technology of DMFC can be directly coupled to the cell culture systems. In this course, the focuses are on quantitative studies of the electricity, water, and carbon dioxide generated from DMFC. In the study, five fuel cell stacks were linked in series. Each of the stacks consists of a Nafion-117 membrane-electrode assembly (MEA) in which the anode and the cathode sides are coated with 4 mg/cm2 Platinum-Ruthenium/C and Platinum/C catalysts, respectively. The experiment was conducted by fixing the output power of 4 watts. Methanol of 300 ml was injected into the system which then reacted with oxygen in the air. In the both electrodes, gases and liquid substances were collected and analyzed. 65% out of the collected gases are carbon dioxide. Water of 280 and 36 ml was collected from the anode and the cathode, respectively. As to the electricity, a steady dc 2V/2A voltage can be continuously supplied for 81 minutes. Based upon these results, we conclude that DMFC has a great potential to be used in conjunction with bioreactors, CO2 cell incubators, and microscope chambers.

參考文獻


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被引用紀錄


李得民(2008)。甲醇燃料電池於細胞培養箱上之整合應用與探討〔碩士論文,中原大學〕。華藝線上圖書館。https://doi.org/10.6840%2fcycu200900663

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