Perfluorinated Sulfonic Acid Lithium Conductivity Humidity Sensor

Authors

Hong-feng XU, Dalian Railway Institute,Dalian 116028,China);
Jing LIU, Dalian Railway Institute,Dalian 116028,China);
Li WAN, Dalian Railway Institute,Dalian 116028,China);

Corresponding Author

Hong_feng XU

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.

DOI Link

https://doi.org/10.61558/2993-074X.1508

Publication Date

2003-05-28

Online Available Date

2003-05-28

Revised Date

2003-05-28

Received Date

2003-05-28

Recommended Citation

Hong-feng XU, Jing LIU, Li WAN. Perfluorinated Sulfonic Acid Lithium Conductivity Humidity Sensor[J]. Journal of Electrochemistry, 2003 , 9(2): 217-221.
DOI: 10.61558/2993-074X.1508
Available at: https://jelectrochem.xmu.edu.cn/journal/vol9/iss2/15

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