Modeling and Behavior Analysis of a Membraneless Fuel Cell

Flores-Rivera, Ciro-Filemon

doi:10.5402/2012/695167

Cited by 2 publications

(1 citation statement)

References 10 publications

(4 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A unique feature of sodium percarbonate is that it can be used not only as an oxidant but also as a reductant [6,7], which is an advantage compared to fuel cells that use hydrogen peroxide. On the performance side, MLFAFC generates electric power comparable to a typical air-breathing direct methanol fuel cell (DMFC) operating in a microchemical channel at room temperature.…”

Section: Na2co3•3h2o2 → 2na2co3 + 3h2o2mentioning

confidence: 99%

Analysis of Membranless Formic Acid Fuel Cell using E-Shaped Microfluidic Channel

Elumalai

Raja²,

Rajasekaran

et al. 2019

Asian J. Chem.

View full text Add to dashboard Cite

A microfluidic fuel cell has been fabricated using formic acid in an alkaline media as the fuel and sodium percarbonate in acidic media as the oxidant. Various operating conditions and different cell dimensions were applied to evaluate the fuel cell performance. The laminar flow-based membraneless fuel cell was found to reach a maximum power density of 23.60 mW cm-2 using 1.50 M HCOOH in 3 M NaOH solution as the fuel and 0.15 M percarbonate in 1.50 M H2SO4 solution as the oxidant at room temperature. The fuel cell system has no proton exchange membrane. This simple membraneless fuel cell with a planar structure has a high design flexibility, which enables its easy integration into actual microfluidic systems and miniature power applications.

show abstract

Section: Na2co3•3h2o2 → 2na2co3 + 3h2o2mentioning

confidence: 99%

Analysis of Membranless Formic Acid Fuel Cell using E-Shaped Microfluidic Channel

Elumalai

Raja²,

Rajasekaran

et al. 2019

Asian J. Chem.

View full text Add to dashboard Cite

show abstract

Co-laminar flow cells for electrochemical energy conversion

Goulet

Kjeang

2014

Journal of Power Sources

103

View full text Add to dashboard Cite

A recently developed class of electrochemical cell based on co-laminar flow of reactants through porous electrodes is investigated. New architectures are designed and assessed for fuel recirculation and rechargeable battery operation.Extensive characterization of cells is performed to determine most sources of voltage loss during operation. To this end, a specialized flow cell technique is developed to mitigate mass transport limitations and measure kinetic rates of reaction on flow-through porous electrodes. This technique is used in in conjunction with cyclic voltammetry and electrochemical impedance spectroscopy to evaluate different treatments for enhancing the rates of vanadium redox reactions on carbon paper electrodes. It is determined that surface area enhancements are the most effective way for increasing redox reaction rates and thus a novel in situ flowing deposition method is conceived to achieve this objective at minimal cost. It is demonstrated that flowing deposition of carbon nanotubes can increase the electrochemical surface area of carbon paper by over an order of magnitude. It is also demonstrated that flowing deposition can be achieved dynamically during cell operation, leading to considerably improved kinetics and mass transport properties. To take full advantage of this deposition method, the total ohmic resistance of the cell is considerably reduced through design optimization with reduced channel width, integration of current collectors and reduction of reactant concentration. With electrodes enhanced by dynamic flowing deposition the cell presented in this study demonstrates nearly a fourfold improvement in power density over the baseline design.Producing more than twice the power density of the leading co-laminar flow cell without the use of catalysts or elevated temperatures and pressures, this cell provides a lowcost standard for further research into system scale-up and implementation of co-laminar flow cell technology. More generally, the experimental technique and deposition method developed in this work are expected to find broader use in other fields of electrochemical energy conversion. am also very grateful to my graduate colleagues at SFU and friends in FCRel, with a special mention to Omar in particular, for all the pleasant conversations and good times.I wish there had been more.Last but not least, I'd like to acknowledge all the family and friends I was unable to spend quality time with due to this work. I look forward to seeing you all again.vi Tables Table 1. for their higher specific energy and energy density [6]. For the same reasons, the lower power (< 100 W) market which is driven by portable consumer electronics, is currently 2 dominated by closed cell lithium ion batteries in particular [7]. As these batteries reach their limits and fail to keep up with the energy requirements of modern electronics, micro fuel cells with passively pumped higher energy density liquid reactants such as methanol have been suggested as a potential replacement [8].Regardless...

show abstract

Modeling and Behavior Analysis of a Membraneless Fuel Cell

Cited by 2 publications

References 10 publications

Analysis of Membranless Formic Acid Fuel Cell using E-Shaped Microfluidic Channel

Analysis of Membranless Formic Acid Fuel Cell using E-Shaped Microfluidic Channel

Co-laminar flow cells for electrochemical energy conversion

Contact Info

Product

Resources

About