Fuel economy analysis of fuel cell and supercapacitor hybrid systems
- Authors
- Shin, Donghwa; Lee, Kyungsoo; Chang, Naehyuck
- Issue Date
- Jan-2016
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Fuel cell-supercapacitor hybrid; Fuel economy; Cost break-even period
- Citation
- INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.41, no.3, pp.1381 - 1390
- Journal Title
- INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
- Volume
- 41
- Number
- 3
- Start Page
- 1381
- End Page
- 1390
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/39392
- DOI
- 10.1016/j.ijhydene.2015.10.103
- ISSN
- 0360-3199
- Abstract
- Fuel cells generally have a higher energy density by a lower power density than batteries, and a fluctuating load can cause unstable operation as well as low efficiency. A hybrid in which a fuel cell is combined with an energy storage element with higher power density, such as a battery or supercapacitor, can enhance the load-following capability of a fuel cell system. We analyze the design space of a proton exchange membrane fuel cell (PEMFC) and supercapacitor hybrid system, and forecast the break-even operating period of the hybrid, at which the additional cost of hybridization is met by reduced fuel costs. The combination of a 100 W PEMFC and a supercapacitor with the earliest cost break-even time uses 6.8% less fuel than a base fuel cell, and has a 50% higher peak power capacity. The additional supercapacitor cost for hybridization is recoverable in 1152-6480 h of operation, while the typical guaranteed lifetime of a commercial fuel cell is around 3000 h. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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