Enhancement of anode performance for alkaline-acid direct glycerol fuel cells

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Author list: Sangkheaw, Ponkarnan; Therdthianwong, Supaporn; Therdthianwong, Apichai; Wongyao, Nutthapon; Yongprapat, Sarayut

Publisher: Elsevier

Publication year: 2020

Volume number: 161

Start page: 395

End page: 407

Number of pages: 13

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85089225438&doi=10.1016%2fj.renene.2020.07.069&partnerID=40&md5=8b9f49ba4072fa6e9f006eb78ba9df43

Languages: English-Great Britain (EN-GB)

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Abstract

An alkaline-acid direct glycerol fuel cell (AA-DGFC) was proposed for a portable power generating device that requires high power density. A good design of cell components and optimum cell operating conditions are the key factors to yield high performance of fuel cells. In this work, AA-DGFC with Pt/C anode catalyst showed outstanding performance with open-circuit voltage as high as 1.72V and the peak power density of 330 mWcm−2 which is about 2.7 times higher than the performance of a typical anion exchange membrane direct glycerol fuel cell (AEDGFC). The operating conditions providing the best performance were at glycerol to NaOH mole ratio of 1:5, 1.0M glycerol concentration, an anolyte volumetric flow rate of 1mLmin-1 and cell temperature of 80 °C. For the design of the cell component, the optimum Nafion ionomer content in the anode microporous layer was 20 wt%. Among the Au-based catalysts at the anode studied Au/C, Au–Ni/C and Au–Ag/C, the Au–Ni/C outperformed the others with the power density of 142 mWcm−2. © 2020 Elsevier Ltd

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