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Catalyst-selective, scalable membraneless alkaline direct formate fuel cells

Paper ID Volume ID Publish Year Pages File Format Full-Text
45534 46416 2015 5 PDF Available
Title
Catalyst-selective, scalable membraneless alkaline direct formate fuel cells
Abstract

•A catalyst-selective strategy is proposed for development of membraneless DLFCs.•A safe, inexpensive alkaline aqueous formate solution is used as an anolyte/fuel.•The membraneless DFFC system is scalable without configuration limitations.•Both facile anode and cathode reactions can be realized in membraneless DFFCs.•Aqueous formate fuel shows superior oxidation kinetics to other liquid fuels.

We present here a membraneless alkaline direct formate fuel cell (DFFC) with a catalyst-selective strategy, in which a non-hazardous, inexpensive alkaline aqueous formate solution is used as an anolyte. The novel catalyst-selective strategy not only avoids the use of practically unviable alkaline anion-exchange membranes, but also overcomes the scalability limitation of the traditional membraneless DLFCs that are based on a micro-flow phenomenon, and allows the development of large-scale membraneless DLFCs with flexible configurations. In comparison to methanol, ethanol, and formic acid fuels, the aqueous formate solutions show superior oxidation kinetics and efficiency. The high power density exhibited by the membraneless alkaline DFFC is promising for developing small, safe, inexpensive portable power systems as well as large-scale energy generation systems.

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Keywords
Scalable membraneless fuel cell; Catalyst-selective strategy; Direct liquid fuel cell; Alkaline fuel cell; Formate
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 165, April 2015, Pages 63–67
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
Online Support
Any Questions? feel free to contact us