全氟磺酸锂电导率式湿度传感器 |
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引用本文: | 徐洪峰,刘晶,万莉.全氟磺酸锂电导率式湿度传感器[J].电化学,2003,9(2):217-221. |
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作者姓名: | 徐洪峰 刘晶 万莉 |
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作者单位: | 大连铁道学院环境科学与工程系,大连铁道学院环境科学与工程系,大连铁道学院环境科学与工程系 辽宁大连,116028
,辽宁大连,116028
,辽宁大连,116028 |
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基金项目: | 辽宁省教育厅计划项目 (2 0 1 3 2 1 1 89)资助 |
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摘 要: | 以碳纸为电极,Nafion溶液再铸薄膜为感湿材料,并用氯化锂将膜转换成Li+型,制备了固体聚合物电解质湿度传感器.测定了不同相对湿度下,传感器的电导率响应与相对湿度之间关系.结果表明:在相对湿度为10%~97%范围内,传感器的电导率响应对数与相对湿度之间成良好的线性关系,线性度为0.997;传感器响应的时间为40s左右;于200h内稳定性和重复性良好.
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关 键 词: | 固体聚合物电解质 湿度传感器 Nafion |
文章编号: | 1006-3471(2003)02-0217-05 |
收稿时间: | 2003-05-28 |
修稿时间: | 2002年8月9日 |
Perfluorinated Sulfonic Acid Lithium Conductivity Humidity Sensor |
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Abstract: | Treat carbon paper with 3% PTFE solution and dried in 340 ℃ for 40 minutes to enhance its intension, and level off the surface of the carbon paper with a mixture of XC_72 carbon black and PTFE solution. With those treated carbon paper as electrodes,recast Nafion thin film from 5% Nafion solution as humidity sensitive material, a solid polymer electrolyte humidity sensor was prepared on a thin PET film.Take the relative humidity data from several saturated salt solutions, the relationship between conductivity response and relative humidity was studied at different relative humidies.The results showed: when the polymer electrolyte was H+ type,the linear response of range was about 40%~97% relative humidity, and exchanging the H+ of the Nafion into Li+, a linear response range was from 10% to 97% relative humidity, the humidity sensor has good stability and reversibility in 200 hours,its response time is less than 40 seconds and its conductivity response is less affected by temperatures. |
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Keywords: | Soid polymer electrolyte Humidity sensor Nafion |
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