Experimental investigation on serpentine, parallel and novel zig-zag flow fields for effective water removal and enhanced performance on 25 cm2 PEMFC
1
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
Water management is decisive in the commercialisation of Polymer Electrolyte Membrane Fuel cells (PEMFCs) as poor watermanagement leads to reduced performance and reliability. Hence, this work deals with effective water management andphysically examines water removed at cathode outlet in 25 cm2 PEMFC of land width by channel width of 2 × 2. Sixcombinations among flow fields such as parallel without slope, parallel with slope, serpentine and a novel parallel zigzag withslope are used for experimentation. Experimental results disclose that inducing cross flow among reactants, increasingexposure area of uncompressed MEA with reacting gases and backpressure increases the performance while slope at cathodeincreases the water removal rate of PEMFC. The novel flow field when used at the cathode with the serpentine flow field atanode accumulates advantages of the flow fields considered and enhanced the performance by about 23% than conventionalserpentine flow fields due to the induced flow non-uniformity, under rib convection and better water removal rate. Additionally, to enhance the water removal and performance a silicon dioxide based ceramic ink is spray coated on thegraphite plate to increase its hydrophobicity. As the electrical conductivity of silicon dioxide, a key constituent in thehydrophobic coating is limited, a blend of 2% graphene by weight with the ceramic ink is also attempted along with thedurability of these flow fields for twelve hours of continuous operation.
Abstract
Water management is decisive in the commercialisation of Polymer Electrolyte Membrane Fuel cells (PEMFCs) as poor watermanagement leads to reduced performance and reliability. Hence, this work deals with effective water management andphysically examines water removed at cathode outlet in 25 cm2 PEMFC of land width by channel width of 2 × 2. Sixcombinations among flow fields such as parallel without slope, parallel with slope, serpentine and a novel parallel zigzag withslope are used for experimentation. Experimental results disclose that inducing cross flow among reactants, increasingexposure area of uncompressed MEA with reacting gases and backpressure increases the performance while slope at cathodeincreases the water removal rate of PEMFC. The novel flow field when used at the cathode with the serpentine flow field atanode accumulates advantages of the flow fields considered and enhanced the performance by about 23% than conventionalserpentine flow fields due to the induced flow non-uniformity, under rib convection and better water removal rate. Additionally, to enhance the water removal and performance a silicon dioxide based ceramic ink is spray coated on thegraphite plate to increase its hydrophobicity. As the electrical conductivity of silicon dioxide, a key constituent in thehydrophobic coating is limited, a blend of 2% graphene by weight with the ceramic ink is also attempted along with thedurability of these flow fields for twelve hours of continuous operation.
참고문헌 (38)
- 고범수, "Platinum catalysts on KOH-treated multi-walled carbon nanotubes for PEM fuel cell nano sized dense structured electrodes", Journal of Ceramic Processing Research, 17(4), pp.332~337 (2016), 청정에너지연구소[DOI]
- Seoung-Ju Lee, "Geometric reconstruction and numerical analysis for characterization of transport properties at various levels of water saturation in micro", nano structure of catalyst layers, 2017, pp.18(9), 666~670[DOI]
- M. Karthikeyan, "Optimization of active area of proton exchange membrane fuel cell with better water management", Journal of Ceramic Processing Research, 20(5), pp.490~498 (2019), 청정에너지연구소[DOI]
- N. Bunmark, , J. Power Sources, 35(13), pp.6887~6896 (2010)
- J. Zhang, , Int. J. Green Energy, 7(5), pp.461~474 (2010)
- K. Takada, , J. Power Sources, 196(5), pp.2635~2639 (2011)
- A. Su, , Int. J. Hydrogen Energy, 31(8), pp.1031~1039 (2006)
- L. Rostami, , Energy, 97, pp.400~410 (2016)
- P. Karthikeyan, , Int. J. Hydrogen Energy, 40(13), pp.4641~4648 (2015)
- S. Shimpalee, , J. Power Sources, 160(1), pp.398~406 (2006)
- S. Maharudrayya, , J. Power Sources, 157(1), pp.358~367 (2006)
- J. P. Owejan, , Int. J. Hydrogen Energy, 32(17), pp.4489~4502 (2007)
- J. Bachman, , Int. J. Hydrogen Energy, 37(22), pp.17172~17179 (2012)
- K. S. Choi, , Int. J. Hydrogen Energy, 36(2), pp.1613~1627 (2011)
- A. P. Manso, , Int. J. Hydrogen Energy, 37(20), pp.15256~15287 (2012)
- Y. -M. Ferng, , Int. J. Hydrogen Energy, 32(17), pp.4466~4476 (2007)
- P. Karthikeyan, , Int. J. Hydrogen Energy, 39(21), pp.11186~11195 (2014)
- Y. H. Park, , Int. J. Green Energy, 5(5), pp.347~359 (2008)
- B. Sreenivasulu, , Int. J. Appl. Sci. Eng, 11(1), pp.1~11 (2013)
- D. Rohendi, , Int. J. Hydrogen Energy, 40(34), pp.10960~10968 (2015)
- J. Zhang, , J. Electroanal Chem, 688, pp.130~136 (2013)
- J. Wang, , Int. J. Hydrogen Energy, 33(21), pp.6339~6350 (2008)
- S. Shanmugasundaram, , J. Energy Institute, 90(3), pp.363~371 (2017)
- S. Patel, , Int. J. Green Energy, 5(1-2), pp.35~54 (2008)
- M. S. Hossain, , Int. J. Hydrogen Energy, 42(8), pp.5272~5283 (2017)
- D.J. Franklin, , Int. J. Automobile Engineering Research and Development, pp.7~16 (2017)
- J. -C. Lin, , J. Applied Electrochemistry, 39(7), pp.1067~1073 (2009)
- K. Jiao, , Prog. Energy Combust. Sci, 37(3), pp.221~291 (2011)
- P. A. García-Salaberri, , Int. J. Hydrogen Energy, 36(18), pp.11856~11870 (2011)
- C. Wang, , Int. J. Hydrogen Energy, 42(36), pp.23107~23117 (2017)
- S. A. Saco, , Energy, 113, pp.558~573 (2016)
- J. Wang, , Energy, 80, pp.509~521 (2015)
- Mantana Suwan, "Fabrication of robust, transparent PMMA", SiO2 nanocomposite superhydrophobic films with self-cleaning property, 2017, pp.18(7), 521~525[DOI]
- S. L. Cheng, "Formation kinetics and structures of high-density vertical Si nanowires on (111)Si substrates", Journal of Ceramic Processing Research, 10(3), pp.243~247 (2009), 청정에너지연구소[DOI]
- Hsing-I Hsiang, "Preparation and characterization of superhydrophobic coatings", Journal of Ceramic Processing Research, 11(3), pp.308~310 (2010), 청정에너지연구소[DOI]
- M. K. Vijayakrishnan, , Int J Hydrogen Energy, 45(13), pp.7848~7862 (2020)
- M. Karthikeyan, , Int. J. Hydrogen Energy, 45(13), pp.7863~7872 (2020)
- E. O. Balogun, , Int. J. Hydrogen Energy, 44(60), pp.32219~32230 (2019)