http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Experimental analysis of a two-cell passive direct methanol fuel cell stack
Muralikrishna Boni,Surapaneni Srinivasa Rao,Golagani Naga Srinivasulu 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.1
Passive direct methanol fuel cells (DMFC) are applicable for charging portable electronic devices. In passive DMFC, fuel and oxidants are supplied through diffusion and natural convection process. The present experimental work analyzed the effect of the membrane electrode assembly (MEA) activation, methanol concentration, bolt tightening torque and stability of the fuel cell stack. Newly fabricated MEA were activated for different time durations of 0, 6, 12 and 18 hrs at 1M of methanol concentration with a constant load. The concentration of methanol varied from 1M to 6M and also bolt torque varied from 4N-m to 8N-m. Further, open circuit voltage (OCV) and voltage stability with respect to time were analyzed. From the results, it is observed that the fuel cell performance was enhanced from 1M to 5M and then decreased. From 0-12 hrs, the cell performance increased with respect to time and then continued the same performance at the 18th hr. From the results, it is also observed that increased bolt torque from 4N-m to 7N-m enhanced the fuel cell performance and then decreased. The fuel cell performance was analyzed in terms of maximum power density and maximum current density.