首页|Measurement of water concentration along the straight channel of proton exchange membrane fuel cell
Measurement of water concentration along the straight channel of proton exchange membrane fuel cell
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NSTL
Elsevier
? 2022 Elsevier LtdGiven that the ionic conductivity of a proton exchange membrane fuel cell is significantly influenced by water concentration in the channel, an elaborate water management strategy is crucial to ensure durability and performance of these types of fuel cells. In this study, the vapour concentration of a gas mixture was observed in the through-plane direction in a bipolar plate. The stainless steel bipolar plate used here has straight channels containing installed relative humidity/temperature micro-sensors such that the vapour flow behaviour can be observed. The vapour concentration in the anode channel is increased by the back diffusion of water vapour from the cathode. The vapour concentration at the cathode channel increases with the water produced during the electrochemical reaction. The distribution of the dew point temperature at the anode/cathode channel shows that water transport to the anode increases the vapour concentration of anode gases.
Anode vapour transportBack diffusionProton-exchange membrane fuel cellRelative humidity sensorVapour concentration of a flow field
Han J.、Kim Y.、Kim T.、Yu S.
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Graduate School Chungnam National University
Department of Mechanical Engineering Chungnam National University
NSTL
Elsevier
