In this paper, an economical and simple procedure was adopted for the fabrication of chemically crosslinked polyvinyl alcohol (PVA)-based KOH-doped alkaline membrane for the use in an alkaline direct ethanol fuel cell (ADEFC). The membrane parameters, namely, water uptake, KOH uptake, and ionic conductivity were systematically evaluated. The ionic conductivity of the synthesized membrane was in the order of 9 × 10−3 S/cm. The performance of the synthesized alkaline membrane is evaluated in a single ADEFC. Commercial Pt–Ru (30 wt %: 15 wt %)/C and Pt (40 wt %)/high surface area carbon (CHSA) from Alfa Aesar, Haverhill, MA, were used for anode and cathode, respectively. The performance of the membrane was further evaluated in a single cell using different grades of membranes containing different glutaraldehyde (GA) concentration, anode and cathode electrocatalyst loading, ethanol concentration, and KOH concentration. The maximum open circuit voltage (OCV) of 0.73 V was obtained at a temperature of 35 °C for anode feed containing 2 M ethanol and 1 M KOH for the membrane crosslinked with 2.5 wt % glutaraldehyde doped with 6 M KOH. The maximum power density of 4.15 mW/cm2 at a current density of 20.69 mA/cm2 was obtained for the same condition. The optimum electrocatalyst loading was 1 mg/cm2 of Pt-Ru/C at the anode and 1 mg/cm2 of Pt/CHSA at the cathode. The performance of KOH-doped chemically crosslinked PVA membrane was comparable with the published literature.
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November 2019
Research-Article
A Study on Synthesis of Chemical Crosslinked Polyvinyl Alcohol-Based Alkaline Membrane for the Use in Low-Temperature Alkaline Direct Ethanol Fuel Cell
Uday Kumar Gupta,
Uday Kumar Gupta
Department of Chemical Engineering and Technology,
Varanasi, Uttar Pradesh,
Indian Institute of Technology (Banaras Hindu University)
,Varanasi, Uttar Pradesh,
India
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Hiralal Pramanik
Hiralal Pramanik
1
Department of Chemical Engineering and Technology,
Varanasi, Uttar Pradesh,
e-mail: hpramanik.che@itbhu.ac.in
Indian Institute of Technology (Banaras Hindu University)
,Varanasi, Uttar Pradesh,
India
e-mail: hpramanik.che@itbhu.ac.in
1Corresponding author.
Search for other works by this author on:
Uday Kumar Gupta
Department of Chemical Engineering and Technology,
Varanasi, Uttar Pradesh,
Indian Institute of Technology (Banaras Hindu University)
,Varanasi, Uttar Pradesh,
India
Hiralal Pramanik
Department of Chemical Engineering and Technology,
Varanasi, Uttar Pradesh,
e-mail: hpramanik.che@itbhu.ac.in
Indian Institute of Technology (Banaras Hindu University)
,Varanasi, Uttar Pradesh,
India
e-mail: hpramanik.che@itbhu.ac.in
1Corresponding author.
Manuscript received December 10, 2018; final manuscript received February 26, 2019; published online April 12, 2019. Assoc. Editor: Dirk Henkensmeier.
J. Electrochem. En. Conv. Stor. Nov 2019, 16(4): 041005 (11 pages)
Published Online: April 12, 2019
Article history
Received:
December 10, 2018
Revision Received:
February 26, 2019
Accepted:
March 7, 2019
Citation
Gupta, U. K., and Pramanik, H. (April 12, 2019). "A Study on Synthesis of Chemical Crosslinked Polyvinyl Alcohol-Based Alkaline Membrane for the Use in Low-Temperature Alkaline Direct Ethanol Fuel Cell." ASME. J. Electrochem. En. Conv. Stor. November 2019; 16(4): 041005. https://doi.org/10.1115/1.4043156
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