Fabrication of fuel cells with high power density using micro electrical discharge machining milling

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题名:	Fabrication of fuel cells with high power density using micro electrical discharge machining milling
作者:	洪榮崇
贡献者:	機械工程(學)系
日期:	2011-09
上传时间:	2017-11-14 09:24:07 (UTC+8)
摘要:	Light and thin bipolar plates are essential in increasing the power density of a fuel cell. To construct high-aspect-ratio micro flow channels in such plates is, however, a big challenge. This study reports on machining micro flow channels in metallic bipolar plates using micro electrical discharge machining milling (micro EDMM) with a tungsten carbide electrode. We successfully machined metallic bipolar plates with 500μm channel and rib widths, height of 600μm in a reaction area of 20mm × 20mm, on 1mm thick of SUS316L stainless steel. The optimal operating parameters were explored and discussed. The performance of resulting fuel cell (Metallic-FC) was compared with a commercial available fuel cell composed of graphite bipolar plates (Graphite-FC). The high temperature of Metallic-FC increases its electrochemical reaction rate and consequently yields higher power density (723 mWcm-2) then that of Graphite-FC (687.3 mWcm-2)
關聯:	Advanced Materials Research
显示于类别:	[機械工程系(所)] 【機械工程系】期刊論文

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