title: An improved alkaline direct formate paper microfluidic fuel cell.
abstract: Paper-based microfluidic fuel cells (MFCs) are a potential replacement for traditional FCs and batteries due to their low cost, portability, and simplicity to operate. In MFCs, separate solutions of fuel and oxidant migrate through paper due to capillary action and laminar flow and, upon contact with each other and catalyst, produce electricity. In the present work, we describe an improved microfluidic paper-based direct formate FC (DFFC) employing formate and hydrogen peroxide as the anode fuel and cathode oxidant, respectively. The dimensions of the lateral column, current collectors, and cathode were optimized. A maximum power density of 2.53 mW/cm(2) was achieved with a DFFC of surface area 3.0 cm(2) , steel mesh as current collector, 5% carbon to paint mass ratio for cathode electrode and, 30% hydrogen peroxide. The longevity of the MFC's detailed herein is greater than eight hours with continuous flow of streams. In a series configuration, the MFCs generate sufficient energy to power light-emitting diodes and a handheld calculator.
authors.affiliation: Department of Chemistry and Biochemistry, California State University, Los Angeles, CA, USA.
authors.forename: Vicente
authors.initials: V
authors.lastname: Galvan
authors.affiliation: Department of Chemistry and Biochemistry, California State University, Los Angeles, CA, USA.
authors.forename: Kryls
authors.initials: K
authors.lastname: Domalaon
authors.affiliation: Department of Chemistry and Biochemistry, California State University, Los Angeles, CA, USA.
authors.forename: Catherine
authors.initials: C
authors.lastname: Tang
authors.affiliation: Department of Chemistry and Biochemistry, California State University, Los Angeles, CA, USA.
authors.forename: Samantha
authors.initials: S
authors.lastname: Sotez
authors.affiliation: Department of Chemistry and Biochemistry, California State University, Los Angeles, CA, USA.
authors.forename: Alex
authors.initials: A
authors.lastname: Mendez
authors.affiliation: Department of Chemistry and Biochemistry, California State University, Los Angeles, CA, USA.
authors.forename: Mehdi
authors.initials: M
authors.lastname: Jalali-Heravi
authors.affiliation: Department of Chemistry and Biochemistry, California State University, Fullerton, CA, USA.
authors.forename: Krutarth
authors.initials: K
authors.lastname: Purohit
authors.affiliation: Department of Chemistry and Biochemistry, California State University, Fullerton, CA, USA.
authors.forename: Linda
authors.initials: L
authors.lastname: Pham
authors.affiliation: Department of Chemistry and Biochemistry, California State University, Fullerton, CA, USA.
authors.forename: John
authors.initials: J
authors.lastname: Haan
authors.affiliation: Department of Chemistry and Biochemistry, California State University, Los Angeles, CA, USA.
authors.forename: Frank A
authors.initials: FA
authors.lastname: Gomez
mesh_terms: D011211:Electric Power Supplies; D004867:Equipment Design; D005561:Formates / Q000737:chemistry*; D044085:Microfluidics / Q000295:instrumentation*; D010084:Oxidation-Reduction; D010209:Paper
chemical_list: D005561:Formates; C030544:formic acid
keywords: Formate oxidation; Microfluidic fuel cell; Paper microfluidics