Miesse, Craig M. Jung, Won Suk Jeong, Kyoung-Jin Lee, Jae Kwang Lee, Jaeyoung Han, Jonghee Yoon, Sung Pil Nam, Suk Woo Lim, Tae-Hoon Hong, Seong-Ahn 2024-01-21T02:03:36Z 2024-01-21T02:03:36Z 2021-09-01 2006-11-08 0378-7753 https://pubs.kist.re.kr/handle/201004/134961 A direct formic acid fuel cell (DFAFC) hybrid power system for a laptop computer has been developed at the Korea Institute of Science and Technology, Fuel Cell Research Center. At the heart of the system is a 15 MEA DFAFC stack capable of 30 W at 60 mW cm(-2). Stack characteristics relevant to integration into the power system such as concentration and orientation dependence, dynamic response, and long-term performance are elucidated and the resulting hybrid power system's performance is detailed. The stack's fast dynamic response eliminated the need for significant power buffering in the power conditioning equipment. The MEAs were found to give reduced but stable performance after 3 months of operation. The system is capable of an overall system efficiency of 0.23 (delivered power compared to theoretical power), and can operate under a substantial computing load for 2.5 h using a 280 mL tank of 50 wt.% fuel. (c) 2006 Elsevier B.V All rights reserved. English ELSEVIER SCIENCE BV PERFORMANCE DEGRADATION METHANOL PERMEATION DYNAMIC-RESPONSE CROSSOVER MEMBRANE Direct formic acid fuel cell portable power system for the operation of a laptop computer Article 10.1016/j.jpowsour.2006.07.013 1 JOURNAL OF POWER SOURCES, v.162, no.1, pp.532 - 540 JOURNAL OF POWER SOURCES 162 1 532 540 scie scopus 000242059700064 2-s2.0-33750016234 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article PERFORMANCE DEGRADATION METHANOL PERMEATION DYNAMIC-RESPONSE CROSSOVER MEMBRANE direct formic acid fuel cell fuel cell stack portable power supply dynamic response hybrid power system