Fuel Cells for Portable Power: 1. Introduction to DMFCs; 2. Advanced Materials and Concepts for Portable Power Fuel Cells

Zelenay, Piotr¹ 

[1] Los Alamos National Laboratory

关键词: ALTERNATIVE FUELS;    CATALYSTS;    COMMERCIALIZATION;    DIRECT METHANOL FUEL CELLS;    EFFICIENCY;    ELECTROCATALYSTS;    ELECTRODES;    ETHANOL;    FUEL CELLS;    HYDROCARBONS;    MARKET;    MEMBRANES;    METHANOL;    METHYL ETHER;    OXIDATION;    PERFORMANCE;    POWER SYSTEMS;    PROTON EXCHANGE MEMBRANE FUEL CELLS;    TARGETS;   

DOI  :  10.2172/1046526
RP-ID  :  LA-UR-12-23039
PID  :  OSTI ID: 1046526
Others  :  TRN: US201215%%646

美国|英语

来源: SciTech Connect

【 摘 要 】

Thanks to generally less stringent cost constraints, portable power fuel cells, the direct methanol fuel cell (DMFC) in particular, promise earlier market penetration than higher power polymer electrolyte fuel cells (PEFCs) for the automotive and stationary applications. However, a large-scale commercialization of DMFC-based power systems beyond niche applications already targeted by developers will depend on improvements to fuel cell performance and performance durability as well as on the reduction in cost, especially of the portable systems on the higher end of the power spectrum (100-250 W). In this part of the webinar, we will focus on the development of advanced materials (catalysts, membranes, electrode structures, and membrane electrode assemblies) and fuel cell operating concepts capable of fulfilling two key targets for portable power systems: the system cost of $5/W and overall fuel conversion efficiency of 2.0-2.5 kWh/L. Presented research will concentrate on the development of new methanol oxidation catalysts, hydrocarbon membranes with reduced methanol crossover, and improvements to component durability. Time permitted, we will also present a few highlights from the development of electrocatalysts for the oxidation of two alternative fuels for the direct-feed fuel cells: ethanol and dimethyl ether.