Effects of anode orientation and flow channel design on performance of refuelable zinc-air fuel cells

บทความในวารสาร

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Jiratchayamaethasakul C., Srijaroenpramong N., Bunyangyuen T., Arpavate W., Wongyao N., Therdthianwong A., Therdthianwong S.

ผู้เผยแพร่: Springer

ปีที่เผยแพร่ (ค.ศ.): 2014

วารสาร: Journal of Applied Electrochemistry (0021-891X)

Volume number: 44

Issue number: 11

หน้าแรก: 1205

หน้าสุดท้าย: 1218

จำนวนหน้า: 14

นอก: 0021-891X

eISSN: 1572-8838

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85027930580&doi=10.1007%2fs10800-014-0737-4&partnerID=40&md5=31c0abcd2a573e07791eb4ca2f750a83

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

The effects of anode orientation (whether an anode is located above or under a cathode) and flow channel design (parallel or serpentine flow channel) on the performance of refuelable zinc-air fuel cells (RZAFC) continuously fed with KOH electrolyte were investigated. The performance test was conducted at different electrolyte flow rates of 2, 4, and 6 ml h−1. A polarization test of the cell was conducted at the initial stage of operation, followed by a long-term current discharge test in potentiostatic mode. The spent zinc powders were characterized by a scanning electron microscope and X-ray diffraction. The experimental results revealed that the anode-bottom orientation in the cell performed much better than the anode-top orientation with 11.4 times higher zinc utilization. The performance reduction of the anode-top orientation cell was caused by the cathode overpotential, due to the flooding of the cathode by water crossover from the anode, which was induced by the gravity force. For the flow channel design effects, there was an optimum electrolyte flow rate, to yield a maximum current discharge capacity, of 4 ml h−1 in this study. At this optimum flow rate, the total charge per gram of zinc delivered from the anode serpentine cell was 1.75 times higher than that from the anode-parallel one. © 2014, Springer Science+Business Media Dordrecht.

คำสำคัญ

Anode orientation, Flow electrolyte, Parallel flow channel, Refuelable zinc-air fuel cell (RZAFC), Serpentine flow channel