Functionalization of polymeric materials as a high performance membrane for direct methanol fuel cell: A review

Awang, Nuha; Ismail, Ahmad Fauzi; Jaafar, Juhana; Matsuura, Takeshi; Junoh, Hazlina; Othman, Mohd Hafiz Dzarfan; Rahman, Mahabubur

doi:10.1016/j.reactfunctpolym.2014.09.019

Cited by 118 publications

(52 citation statements)

References 60 publications

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“…block copolymers, high-free volume copolymers, grafted/ branched copolymers etc.) (Zhang and Shen 2012b, Awang et al 2015, Kim et al 2015. The aforementioned PSS-b-PMB demonstrated a high degree of phase separation, stability of the ion-conducting channels and effective maintenance of hydration and conductivity at elevated temperatures and low RH (Park et al 2007).…”

Section: Non-fluorinated Pemsmentioning

confidence: 99%

Understanding methods of preparation and characterization of pore-filling polymer composites for proton exchange membranes: a beginner’s guide

Gloukhovski

Freger

Tsur

2017

Reviews in Chemical Engineering

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Abstract Composite membranes based on porous support membranes filled with a proton-conducting polymer appear to be a promising approach to develop novel proton exchange membranes (PEMs). It allows optimization of the properties of the filler and the matrix separately, e.g. for maximal conductivity of the former and maximal physical strength of the latter. In addition, the confinement itself can alter the properties of the filling ionomer, e.g. toward higher conductivity and selectivity due to alignment and restricted swelling. This article reviews the literature on PEMs prepared by filling of submicron and nanometric size pores with Nafion and other proton-conductive polymers. PEMs based on alternating perfluorinated and non-perfluorinated polymer systems and incorporation of fillers are briefly discussed too, as they share some structure/transport relationships with the pore-filling PEMs. We also review here the background knowledge on structural and transport properties of Nafion and proton-conducting polymers in general, as well as experimental methods concerned with preparation and characterization of pore-filling membranes. Such information will be useful for preparing next-generation composite membranes, which will allow maximal utilization of beneficial characteristics of polymeric proton conductors and understanding the complicated structure/transport relationships in the pore-filling composite PEMs.

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Section: Non-fluorinated Pemsmentioning

confidence: 99%

Understanding methods of preparation and characterization of pore-filling polymer composites for proton exchange membranes: a beginner’s guide

Gloukhovski

Freger

Tsur

2017

Reviews in Chemical Engineering

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“…The parameters determining the performance of the fuel cell are dependent on the electrolyte material and composition of the membrane electrode assembly MEA [91]. The relationship of the materials to the performance of the device is significant and many important contributions in this topic can be found in the literature [92][93][94][95][96][97]. There are several kinds of fuel cells classified on the basis of the electrochemical process utilized.…”

Section: Algorithm and Resultsmentioning

confidence: 99%

Evaluation of Combined Heat and Power (CHP) Systems Using Fuzzy Shannon Entropy and Fuzzy TOPSIS

2016

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Combined heat and power (CHP) or cogeneration can play a strategic role in addressing environmental issues and climate change. CHP systems require less fuel than separate heat and power systems in order to produce the same amount of energy saving primary energy, improving the security of the supply. Because less fuel is combusted, greenhouse gas emissions and other air pollutants are reduced. If we are to consider the CHP system as "sustainable", we must include in its assessment not only energetic performance but also environmental and economic aspects, presenting a multicriteria issue. The purpose of the paper is to apply a fuzzy multicriteria methodology to the assessment of five CHP commercial technologies. Specifically, the combination of the fuzzy Shannon's entropy and the fuzzy Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) approach will be tested for this purpose. Shannon's entropy concept, using interval data such as the α-cut, is a particularly suitable technique for assigning weights to criteria-it does not require a decision-making (DM) to assign a weight to the criteria. To rank the proposed alternatives, a fuzzy TOPSIS method has been applied. It is based on the principle that the chosen alternative should be as close as possible to the positive ideal solution and be as far as possible from the negative ideal solution. The proposed approach provides a useful technical-scientific decision-making tool that can effectively support, in a consistent and transparent way, the assessment of various CHP technologies from a sustainable point of view.

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“…Methanol is most likely to pass through the electrolyte membrane by ways of molecular diffusion, pressure gradient and electro‐osmosis drag. Therefore, the most effective approach to alleviate MCO is either to fundamentally replace the popular Nafion membrane with a methanol‐resisting membrane or to methodically reduce the methanol concentration in anode catalyst layer.…”

Section: Introductionmentioning

confidence: 99%

Experimental Studies on the Performances of a Direct Methanol Fuel Cell with a Novel Integrated Ultrasonic Atomization Fuel Feeder

Gong

et al. 2020

Fuel Cells

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With the advantages of high energy density and low operating temperature, direct methanol fuel cell (DMFC) has been rated as the most promising portable energy device to replace the traditional lithium cell. However, the development of DMFC is limited by methanol crossover (MCO) and catalyst poisoning. To alleviate MCO, a DMFC with an integrated ultrasonic atomization fuel feeder is proposed in the present research. The open circuit voltage (OCV) and the polarization curves of the cell under a series of conditions are analyzed. The performances of the proposed DMFC are evaluated at different methanol concentrations and fuel feed rates. The mechanism of MCO is discussed from above experiments.Compared with liquid feed style, atomization feed style can reduce characteristic response time (CRT) and greatly alleviate MCO because the DMFC obtains a larger OCV value. It can be found from our experiments that atomization feed style can effectively improve cell performance and energy density. Moreover, atomization feed style under different methanol concentrations can obtain the best cell performance by adjusting feed rate. When the feed rate is 0.24 mL min -1 and 0.6 mL min -1 , the best cell performance is obtained at 8M and 4M, respectively.

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Functionalization of polymeric materials as a high performance membrane for direct methanol fuel cell: A review

Cited by 118 publications

References 60 publications

Understanding methods of preparation and characterization of pore-filling polymer composites for proton exchange membranes: a beginner’s guide

Understanding methods of preparation and characterization of pore-filling polymer composites for proton exchange membranes: a beginner’s guide

Evaluation of Combined Heat and Power (CHP) Systems Using Fuzzy Shannon Entropy and Fuzzy TOPSIS

Experimental Studies on the Performances of a Direct Methanol Fuel Cell with a Novel Integrated Ultrasonic Atomization Fuel Feeder

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