RESEARCH ON WATER TRANSPORT OF SOLID ELECTROLYTE MEMBRANE

固体电解质膜的水传输研究

• 批准号: 13680582
• 负责人: MURAHASHI Toshiaki
• 金额: $ 1.66万
• 依托单位: Fukui University of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13680582/
• 关键词: SOLID ELECTROLYTE MEMBRANE; POLYMER ELECTROLYTE FUEL CELL; ELECTRO-OSMOSIS; WATERTRANSPORT; WATER MANAGEMENT; DIFFUSION

Two years of research term were divided to (1) Experiments on cell performance under dry environment and data acquisition about condensation method for measurement of water vapor in gas stream, (2) Experiments on electro-osmosis under practical operational conditions.(1) Three cases reflecting practical application background were applied to single cell performance measurements. Anode dry, cathode dry, anode and cathode dry, respectively. Threshold of stable and unstable performance was set as the rise of internal resistance. Experimental results were compared with calculated prediction based on the water balance in a cell. Measurement methods of water content of water vapor in gas stream are known as dew point meter and condensation measurement. In our measurements, considering the facts that gas volume is small and long time course measurements are necessary, condensation method was adopted.(2) Oxidation and reduction of hydrogen under DC current does not generate water, but proton transport occurs. Under this reaction, outgases from cathode and anode were cooled and condensed water was collected and weighed. Measurements are still in progress, but preliminary results were obtained. Net electroosmotic coefficient was calculated as 0.21. Separation of electroosmosis and back diffusion from net coefficient is also in progress.

两年的研究期分为（1）干燥环境下电池性能实验和冷凝法测量气流中水蒸气的数据采集;（2）实际操作条件下的电渗实验。(1)三个反映实际应用背景的案例被应用于单电池性能测量。分别为阳极干燥、阴极干燥、阳极和阴极干燥。以内阻的上升为判断稳定和不稳定性能的阈值。实验结果进行了比较与计算预测的基础上在一个细胞中的水平衡。测量气流中水蒸气含水量的方法有露点仪法和冷凝测量法。在测量中，考虑到气体体积小，需要长时间测量的实际情况，采用了冷凝法。(2)氢在直流电下的氧化和还原不产生水，但发生质子传输。在该反应下，冷却来自阴极和阳极的废气，收集冷凝水并称重。测量仍在进行中，但已获得初步结果。净电渗系数计算为0.21。从净系数中分离电渗和反扩散也在进行中。

项目成果

TOSHIAKI MURAHASHI: "WATER MANAGEMENT OF PEFC"MEMOIRS OF FUKUI UNIVERSITY OF TECHNOLOGY. 32. 59-66 (2002)

Toshiaki Murahashi：“PEFC 的水管理”福井工业大学回忆录。

村橋俊明: "固体高分子型燃料電池のWater Management"福井工業大学紀要. 32. 59-66 (2002)

Toshiaki Murahashi：“固体聚合物燃料电池的水管理”福井工业大学通报。32. 59-66 (2002)

TOSHIAKI MURAHASHI: "RESEARCH ON HYDROGEN RECYCLE SYSTEM OFPEFC OFF-GAS"MEMOIRS OF FUKUI UNIVERSITY OF TECHNOLOGY. 33. 79-86 (2003)

村桥俊明：福井工业大学回忆录《PEFC废气氢循环系统研究》。

村橋俊明(岩本 正和編集): "環境触媒ハンドブック"エス・ティー・エス. 966 (2001)

Toshiaki Murahashi（岩本正和编辑）：“环境催化剂手册”STS 966（2001）。

村橋俊明: "燃料電池オフガス中の水素のリサイクルシステムの研究"福井工業大学紀要. 33. 79-86 (2003)

Toshiaki Murahashi：“燃料电池废气中氢回收系统的研究”福井工业大学通报33. 79-86（2003）。