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Platinum Alloy Electrocatalysts with Enhanced Resistance to Anion Poisoning for Low and Medium Temperature Fuel Cells

技术优势

The electro-catalyst:ΓÇóResults in a greater resistance to surface poisoning from anions present in acid-electrolytes, especially for low and medium temperature fuel cellsΓÇóEnables a significant enhancement of oxygen reduction reaction with improved associated performanceΓÇóAllows for improved economies of scale with enhanced commercial acceptanceΓÇóAllows for a controlled surface morphology as compared to conventional catalystsΓÇóEnables an effective lowering of platinum dissolution, and an enhanced anion free platinum surfacesΓÇóWould be commercially useful for applications such as in phosphoric acid, direct methanol and other fuel cells.

详细技术说明

None

*Abstract

Current fuel cells are associated with poor oxygen reduction reaction kinetics, especially at medium temperature range (150-200OC), resulting in significantly lower power densities. Moreover, the prior-art approaches for preparing electro-catalysts typically follow a two-step approach, wherein an electro-catalyst preparation is followed by addition of alloying element salt solution to this electro-catalyst. However, such approaches result in incomplete alloy formation along with lacked provision for controlled surface morphology. This novel approach enables development of platinum based binary and ternary alloy electro-catalysts, overcoming most prior-art limitations.

*Principal Investigation

Name: Sanjeev Mukerjee

Department:

国家/地区

美国