Discrete regenerative fuel cell reduces hysteresis for sustainable cycling of water.

Sci Rep. 2014 Apr 4;4:4592.

Park K1, Lee J2, Kim HM2, Choi KS3, Hwang G1.1Department of Green Automobile Engineering, Youngsan University, 288 Junam-dong, Yangsan-si, Gyongsangnam-do 626-790, Republic of Korea.

2Department of Mechanical Engineering & High Safety Vehicle Core Technology Research Center, INJE University, 607 Eobang-dong, Gimhae-si, Gyongsangnam-do 621-749, Republic of Korea.

3Department of Automobile Engineering, Tongmyong University, 428 Sinseon-ro, Nam-gu, Busan, 608-711, Republic of Korea.

 

ABSTRACT

The discrete regenerative fuel cell is being developed as a residential power control that synchronizes with a renewables load which fluctuates significantly with the time and weather. The power of proton exchange membrane fuel cells can be scaled-up adjustably to meet the residential power demand. As a result, scale-ups from a basic unit cell with a 25 cm(2) active area create a serpentine flow-field on an active area of 100 cm(2) and take into account the excessive current and the remaining power obtained by stacking single cells. Operating a fuel cell utilising oxygen produced by the electrolyser instead of air improves the electrochemical reaction and the water balance. Furthermore, the performance test results with oxygen instead of air show almost no hysteresis, which results in the very stable operation of the proton exchange membrane fuel cell as well as the sustainable cycle of water by hydrogen and oxygen mediums.

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