{"title":"150瓦直接甲醇燃料电池系统的研制","authors":"T. Valdez, S. Narayanan, N. Rohatgi","doi":"10.1109/BCAA.2000.838368","DOIUrl":null,"url":null,"abstract":"Stack development for a Nafion(R) based 150-watt direct methanol fuel cell (DMFC) system is discussed in this paper. Single cell data for a membrane electrode assembly (MEA) that can operate at low air stoichiometry is presented. The stack operating conditions for achieving a water balance have been determined to be 55/spl deg/C 0.5 M MeOH at a maximum of 1.75 times air stoichiometry at 100 mA/cm/sup 2/. Single cells with a 25-cm/sup 2/ active area have been operated in this regime and can maintain an average cell voltage of 0.43 V at 100 mA/cm/sup 2/ for 120 minutes with a cell voltage decay of 0.2 mV/min. A five-cell stack with a 80-cm/sup 2/ active area, scaled up from the single cell, was capable of sustaining 100-mA/cm/sup 2/ load at a 1.75 air stoichiometry for over 70 hours, with a voltage decay of the order of 2 mV/hr. Voltage decay is reversible by purging excess water in the cathode.","PeriodicalId":368992,"journal":{"name":"Fifteenth Annual Battery Conference on Applications and Advances (Cat. No.00TH8490)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2000-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"Development of a 150-watt direct methanol fuel cell system\",\"authors\":\"T. Valdez, S. Narayanan, N. Rohatgi\",\"doi\":\"10.1109/BCAA.2000.838368\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Stack development for a Nafion(R) based 150-watt direct methanol fuel cell (DMFC) system is discussed in this paper. Single cell data for a membrane electrode assembly (MEA) that can operate at low air stoichiometry is presented. The stack operating conditions for achieving a water balance have been determined to be 55/spl deg/C 0.5 M MeOH at a maximum of 1.75 times air stoichiometry at 100 mA/cm/sup 2/. Single cells with a 25-cm/sup 2/ active area have been operated in this regime and can maintain an average cell voltage of 0.43 V at 100 mA/cm/sup 2/ for 120 minutes with a cell voltage decay of 0.2 mV/min. A five-cell stack with a 80-cm/sup 2/ active area, scaled up from the single cell, was capable of sustaining 100-mA/cm/sup 2/ load at a 1.75 air stoichiometry for over 70 hours, with a voltage decay of the order of 2 mV/hr. Voltage decay is reversible by purging excess water in the cathode.\",\"PeriodicalId\":368992,\"journal\":{\"name\":\"Fifteenth Annual Battery Conference on Applications and Advances (Cat. No.00TH8490)\",\"volume\":\"38 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2000-01-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Fifteenth Annual Battery Conference on Applications and Advances (Cat. No.00TH8490)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/BCAA.2000.838368\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fifteenth Annual Battery Conference on Applications and Advances (Cat. No.00TH8490)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/BCAA.2000.838368","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
摘要
本文讨论了一种基于Nafion(R)的150瓦直接甲醇燃料电池(DMFC)系统的电池组开发。介绍了一种能在低空气化学计量下工作的膜电极组件(MEA)的单细胞数据。达到水平衡的堆操作条件已确定为55/spl度/C, 0.5 M MeOH,最大1.75倍空气化学计量,100 mA/cm/sup / 2/。具有25 cm/sup 2/活性面积的单个电池在该状态下运行,可以在100 mA/cm/sup 2/下保持平均电池电压0.43 V 120分钟,电池电压衰减为0.2 mV/min。一个具有80 cm/sup 2/有效面积的五电池堆叠,在1.75空气化学计量下能够维持100 ma /cm/sup 2/负载超过70小时,电压衰减为2 mV/hr。通过清除阴极中多余的水,电压衰减是可逆的。
Development of a 150-watt direct methanol fuel cell system
Stack development for a Nafion(R) based 150-watt direct methanol fuel cell (DMFC) system is discussed in this paper. Single cell data for a membrane electrode assembly (MEA) that can operate at low air stoichiometry is presented. The stack operating conditions for achieving a water balance have been determined to be 55/spl deg/C 0.5 M MeOH at a maximum of 1.75 times air stoichiometry at 100 mA/cm/sup 2/. Single cells with a 25-cm/sup 2/ active area have been operated in this regime and can maintain an average cell voltage of 0.43 V at 100 mA/cm/sup 2/ for 120 minutes with a cell voltage decay of 0.2 mV/min. A five-cell stack with a 80-cm/sup 2/ active area, scaled up from the single cell, was capable of sustaining 100-mA/cm/sup 2/ load at a 1.75 air stoichiometry for over 70 hours, with a voltage decay of the order of 2 mV/hr. Voltage decay is reversible by purging excess water in the cathode.