Channel electrodes experimental investigation

Experimental investigation of pitting corrosion at channel electrodes... 

A major interest of micro-scale plate and channel reactors is related to the high specific electrode area, permitting operation in a single-pass highsome special features which are detailed in Sections 17.3.3.1-17.3.3.4. The subsequent sections discuss the experimental and theoretical investigations reported in the recent literature. 

Beming et al. [58] performed a parametric study using their previously described singlephase, three-dimensional model [55]. The effect of various operational parameters such as the temperature and pressure on the fuel cell performance was investigated. In addition, geometrical and material parameters such as the gas diffusion electrode thickness and porosity as well as the ratio between the channel width and the land area were investigated. It was found that in order to obtain physically realistic results experimental measurements of various modeling parameters were needed. In addition, the contact resistance inside the cell was found to play an important role for the evaluation of impact of such parameters on the fuel cell performance. The impact of liquid water on transport in the gas-diffusion electrode was, however, not account for. 

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