Title :
Development of methanol sensor using shear horizontal surface acoustic wave devices for direct methanol fuel cells
Author :
Endo, Shuichiro ; Nozawa, Takuya ; Kondoh, Jun
Author_Institution :
Grad. Sch. of Eng., Shizuoka Univ., Hamamatsu, Japan
Abstract :
Concentration of methanol (MeOH) solution is measured using a shear horizontal surface acoustic wave (SH-SAW) sensor. In this study, the SH-SAW sensor is applied as a MeOH sensor for a direct methanol fuel cell (DMFC). Bubbles are generated at high temperature and the sensor responses are influenced. By circulating the MeOH solution, the influence of the bubbles reduces. The long time stability at different flow rate and temperature are measured. A formic acid is generated during the electrode reaction in DMFC. To reduce the influence of formic acid showed that high frequency SH-SAW sensor must be used.
Keywords :
chemical sensors; direct methanol fuel cells; electrochemical electrodes; organic compounds; surface acoustic wave sensors; DMFC; MeOH sensor; direct methanol fuel cells; electrode reaction; formic acid; high frequency SH-SAW sensor; methanol sensor; shear horizontal surface acoustic wave devices; shear horizontal surface acoustic wave sensor; Acoustic waves; Conductivity; Fuel cells; Liquids; Methanol; Temperature measurement; Temperature sensors;
Conference_Titel :
Sensors, 2012 IEEE
Conference_Location :
Taipei
Print_ISBN :
978-1-4577-1766-6
Electronic_ISBN :
1930-0395
DOI :
10.1109/ICSENS.2012.6411045
