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The potential use of carbon-supported PtPdy, where y=1­6, electrocatalysts as CO-tolerant anodes for proton exchange membrane fuel cell (PEMFC) applications has been investigated. Cyclic voltammetry experiments at 80°C, the operating temperature of the PEMFC, reveal that upon CO saturation, a lower fraction of surface sites is poisoned in the case of PtPdy compared to Pt, resulting in higher amounts of adsorbed hydrogen. Fuel cell tests demonstrated that the need for reasonable hydrogen oxidation currents, with and without CO necessitates the presence of Pt in the catalyst. As a CO-tolerant PEMFC anode catalyst, PtPdy attains improved performance compared to both Pt and PtRu. © 2002 The Electrochemical Society. All rights reserved.

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In this paper we present a low-current, highvoltage back-junction back-contact integrated photovoltaic concept and experimental results of such a device, consisting of strip cells: narrow solar cells instead of conventional square cells. The concept is demonstrated by the successful transformation of a completely finished IBC cell into a XIS (Crystalline SiliconInterconnected Strips) device, leading to a V oc of 8.5 V for a series connection of 14 strip cells. For cell separation, different grooving methods were evaluated with respect to their effect on the quality of the groove surface. The effect of the surface passivation in the grooves, which is regarded as a critical parameter, on the XIS device was simulated to gain a better understanding of the processing requirements.

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