TY - JOUR

T1 - Thin film thermocouples for in situ membrane electrode assembly temperature measurements in a polybenzimidazole-based high temperature proton exchange membrane unit cell

A1 - Talat Ali,Syed

A1 - Jespersen,Jesper Lebæk

A1 - Pleth Nielsen,Lars

A1 - Mathiasen,Claus

A1 - Møller,Per

A1 - Kær,Søren Knudsen

AU - Talat Ali,Syed

AU - Jespersen,Jesper Lebæk

AU - Pleth Nielsen,Lars

AU - Mathiasen,Claus

AU - Møller,Per

AU - Kær,Søren Knudsen

PB - Elsevier S.A.

PY - 2010/2

Y1 - 2010/2

N2 - This paper presents Type-T thin film thermocouples (TFTCs) fabricated on Kapton (polyimide) substrate for measuring the internal temperature of PBI (polybenzimidazole)-based high temperature proton exchange membrane fuel cell (HT-PEMFC). Magnetron sputtering technique was employed to deposit a 2m thick layer of TFTCs on 75m thick Kapton foil. The Kapton foil was treated with in situ argon plasma etching to improve the adhesion between TFTCs and the Kapton substrate. The TFTCs were covered with a 7m liquid Kapton layer using spin coating technique to protect them from environmental degradation. This Kapton foil with deposited TFTCs was used as sealing inside a PBI (polybenzimidazole)-based single cell test rig, which enabled measurements of in situ temperature variations of the working fuel cell MEA. The performance of the TFTCs was promising with minimal interference to the operation of the fuel cell.

AB - This paper presents Type-T thin film thermocouples (TFTCs) fabricated on Kapton (polyimide) substrate for measuring the internal temperature of PBI (polybenzimidazole)-based high temperature proton exchange membrane fuel cell (HT-PEMFC). Magnetron sputtering technique was employed to deposit a 2m thick layer of TFTCs on 75m thick Kapton foil. The Kapton foil was treated with in situ argon plasma etching to improve the adhesion between TFTCs and the Kapton substrate. The TFTCs were covered with a 7m liquid Kapton layer using spin coating technique to protect them from environmental degradation. This Kapton foil with deposited TFTCs was used as sealing inside a PBI (polybenzimidazole)-based single cell test rig, which enabled measurements of in situ temperature variations of the working fuel cell MEA. The performance of the TFTCs was promising with minimal interference to the operation of the fuel cell.

KW - Thin film

KW - Polybenzimidazole

KW - Thermocouples

KW - Polyimide sealing

KW - In situ measurements

KW - Fuel cell

U2 - 10.1016/j.jpowsour.2010.02.018

DO - 10.1016/j.jpowsour.2010.02.018

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

IS - 15

VL - 195

SP - 4835

EP - 4841

ER -