High Performance Polymer Hydrogel Based Materials for Fuel Cells

Sahai, Y.; Ma, Jia

doi:10.1002/9781118734162.ch1

Cited by 1 publication

(4 citation statements)

References 79 publications

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“…Such negative effects may be addressed by covalently or ionically cross-linking CS. 480 Additionally, acidic group grafting and polybasic acid addition results in ionic cross-linking; the acidic groups may react with the amino groups in CS. 466,464,478,481 Transport-type conductivity, which is related to the diffusion of hydronium ions (e.g., H 3 O + , H 5 O 2 + , and H 9 O 4 + ), depends strongly upon CS hydration.…”

Section: Energy and Fuelsmentioning

confidence: 99%

“…Proton conductivity occurs via both transport mechanisms and the Grotthuss-type mechanism. , The additives typically increase the conductivity but compromise the mechanical properties. Such negative effects may be addressed by covalently or ionically cross-linking CS . Additionally, acidic group grafting and polybasic acid addition results in ionic cross-linking; the acidic groups may react with the amino groups in CS. ,,, …”

Section: Non-nafion Spementioning

confidence: 99%

“…CS-based membranes have demonstrated considerably low conductivity ,,, but have markedly lower methanol permeabilities than Nafion. , The latter characteristic suggests the possibility of using relatively thin CS membranes for DMFC, which may counter the low conductivity of the CS membranes.…”

Section: Non-nafion Spementioning

confidence: 99%

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Review of Advanced Materials for Proton Exchange Membrane Fuel Cells

2014

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The scientific community is focused on the development of inexpensive and high-performing membrane materials for proton exchange membrane (PEM) fuel cells (FCs). The major approach to reducing the cost of FCs, which is crucial for the widespread acceptance of FCs as energy sources for various practical applications, is reducing the cost of the membrane. Efforts are being made in the development of advanced polymeric materials, which will satisfy the technical and economic demands of the consumers. Because most alternative membranes are outperformed by Nafion membranes over an entire set of important properties, it may be worthwhile to compromise on certain parameters to develop alternative specialized membranes. This review presents the properties (mainly conductivity and chemical and mechanical stability) of modern solid polymer electrolytes (SPEs) for PEM FCs.

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Section: Energy and Fuelsmentioning

confidence: 99%

Section: Non-nafion Spementioning

confidence: 99%

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Review of Advanced Materials for Proton Exchange Membrane Fuel Cells

2014

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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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High Performance Polymer Hydrogel Based Materials for Fuel Cells

Cited by 1 publication

References 79 publications

Review of Advanced Materials for Proton Exchange Membrane Fuel Cells

Review of Advanced Materials for Proton Exchange Membrane Fuel Cells

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

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