Simulation model of the fractal patterns in ionic conducting polymer films

Open Physics ◽  
2010 ◽  
Vol 8 (1) ◽  
Author(s):  
Shahizat Amir ◽  
Nor Mohamed ◽  
Siti Hashim Ali
Keyword(s):  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Fractal Dimensions ◽  
Growth Patterns ◽  
Polymer Electrolyte Membranes ◽  
Electrolyte Membrane ◽  
Ionic Conducting ◽  
Electrolyte Membranes ◽  
Fractal Patterns ◽  
The Media

AbstractNormally polymer electrolyte membranes are prepared and studied for applications in electrochemical devices. In this work, polymer electrolyte membranes have been used as the media to culture fractals. In order to simulate the growth patterns and stages of the fractals, a model has been identified based on the Brownian motion theory. A computer coding has been developed for the model to simulate and visualize the fractal growth. This computer program has been successful in simulating the growth of the fractal and in calculating the fractal dimension of each of the simulated fractal patterns. The fractal dimensions of the simulated fractals are comparable with the values obtained in the original fractals observed in the polymer electrolyte membrane. This indicates that the model developed in the present work is within acceptable conformity with the original fractal.

Fabrication of a polymer electrolyte membrane with uneven side chains for enhancing proton conductivity

RSC Advances ◽  
2016 ◽  
Vol 6 (83) ◽  
pp. 79593-79601 ◽  
Author(s):  
Yunfeng Zhang ◽  
Cuicui Li ◽  
Xupo Liu ◽  
Zehui Yang ◽  
Jiaming Dong ◽  
...  
Keyword(s):  
Polymer Electrolyte ◽  
Proton Conductivity ◽  
Polymer Electrolytes ◽  
Polymer Electrolyte Membrane ◽  
Polymer Electrolyte Membranes ◽  
Side Chains ◽  
Short Side ◽  
Electrolyte Membrane ◽  
Electrolyte Membranes ◽  
Transfer Channels

Enhancement of proton conductivity of polymer electrolyte membranes was achieved by broadening the proton transfer channels via attaching acid groups to both long and short side chains of polymer electrolytes simultaneously.

scholarly journals Modeling the local potential at Pt nanoparticles in polymer electrolyte membranes

2015 ◽  
Vol 17 (15) ◽  
pp. 9802-9811 ◽  
Author(s):  
Mohammad Javad Eslamibidgoli ◽  
Pierre-Éric Alix Melchy ◽  
Michael H. Eikerling
Keyword(s):  
Polymer Electrolyte ◽  
Analytical Model ◽  
Potential Distribution ◽  
Polymer Electrolyte Membrane ◽  
Pt Nanoparticles ◽  
Polymer Electrolyte Membranes ◽  
Local Potential ◽  
Electrolyte Membrane ◽  
Electrolyte Membranes

We present a physical–analytical model for the potential distribution at Pt nanodeposits in a polymer electrolyte membrane (PEM).

Polymer Electrolyte Membranes

2019 ◽  
Vol 23 ◽  
pp. 82-89
Author(s):  
Ponnusamy Senthil Kumar ◽  
C. Femina Carolin
Keyword(s):  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Proton Conductivity ◽  
Chemical Structure ◽  
Polymer Electrolyte Membrane ◽  
Polymer Electrolyte Membranes ◽  
Electrolyte Membrane ◽  
Chemical Structures ◽  
Different Types ◽  
Electrolyte Membranes

Polymer electrolyte membranes (PEM) with good properties are essential for the improvement of electrochemical operations. The increase in properties of polymer electrolyte membranes will develop the performance of polymer electrolyte membranes in the fuel cells. The importance of polymer electrolyte membranes is increasing recently due to its activity and simplicity in energy associated applications like automobiles and various portable applications. PEM has various properties like proton conductivity, chemical stability, mechanical properties, thermal stability and so on. These properties are enhanced and influenced by various factors like morphology, the molecular weight of the membranes, chemical structures, cross linkages etc. The present chapter attempts to summarize about the properties of polymer electrolyte membrane involved in the different types of electrochemical utilizations. Keywords: Polymer electrolyte membrane, fuel cells, morphology, proton conductivity, chemical structure.

High-performance binary cross-linked alkaline anion polymer electrolyte membranes for all-solid-state supercapacitors and flexible rechargeable zinc–air batteries

2019 ◽  
Vol 7 (18) ◽  
pp. 11257-11264 ◽  
Author(s):  
Min Wang ◽  
Nengneng Xu ◽  
Jing Fu ◽  
Yuyu Liu ◽  
Jinli Qiao
Keyword(s):  
Energy Storage ◽  
Solid State ◽  
Polymer Electrolyte ◽  
High Performance ◽  
Polymer Electrolyte Membrane ◽  
Polymer Electrolyte Membranes ◽  
Energy Storage And Conversion ◽  
Electrolyte Membrane ◽  
Electrolyte Membranes ◽  
Zinc Air Batteries

A high-performance binary cross-linked alkaline anion polymer electrolyte membrane was fabricated for energy storage and conversion devices.

Synthesis and Characterization of Solid Polymer Electrolyte from N-Succinyl Chitosan and Lithium Perchlorate

2014 ◽  
Vol 896 ◽  
pp. 58-61 ◽  
Author(s):  
Iqbal Fauzi ◽  
I. Made Arcana ◽  
Deana Wahyuningrum
Keyword(s):  
Polymer Electrolyte ◽  
Solid Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Lithium Perchlorate ◽  
Liquid Electrolyte ◽  
Solid Polymer ◽  
Power Sources ◽  
Electrolyte Membrane ◽  
Existing Problems ◽  
Electrolyte Membranes

Batteries are being developed to solve the global energy crisis. Using portable electronic devices, especially mobile phones and notebook computers, has been increasing, and leading to a strong need of their power-sources. However, secondary batteries using a liquid electrolyte have weaknesses, such as prone to leakage and difficulty of packing. Solid polymer electrolyte is a solution to the existing problems. The objective of this research is to prepare an environmental-friendly and cheap material as the solid polymer electrolyte. In the present study, the effect of succinyl group on to polymer electrolyte membrane which synthesized from chitosan and lithium perchlorate salts was investigated. The N-succinyl chitosan was obtained by reacting chitosan with succinic anhydride. Solid polymer electrolyte membranes were derived from N-succinyl chitosan with different ratios of lithium perchlorate. The degree of deacetylation of chitosan was determined by FTIR analysis. Synthesis of N-succinyl chitosan has been successfully carried out, which is indicated by the characteristic peaks at wavenumbers of 1640 cm-1 and 1560 cm-1 correspond to -C=O stretching and -NH bending of succinyl groups on FTIR spectrum of N-succinyl chitosan. Modification of chitosan by the addition of succinyl group increases the membrane ionic conductivity values. A N-succinyl chitosan membrane contained 10% (w/w) lithium perchlorate showed conductivity of 8.01×10-3 S.cm-1. This solid polymer electrolyte membrane was suggested to have one potential used for polymer electrolyte in lithium battery applications.

Manufacturing of High-Temperature Polymer Electrolyte Membranes—Part II: Implementation and System Model Validation

2009 ◽  
Vol 7 (1) ◽  
Author(s):  
Tequila A. L. Harris ◽  
Daniel F. Walczyk ◽  
Mathias M. Weber
Keyword(s):  
High Temperature ◽  
Polymer Electrolyte ◽  
Manufacturing System ◽  
Flow Behavior ◽  
Polymer Electrolyte Membrane ◽  
Theoretical Models ◽  
Polymer Electrolyte Membranes ◽  
Dynamics Modeling ◽  
Free Film ◽  
Electrolyte Membranes

In this paper, a complex system of theoretical models, which predicts flow rate as a function of pressure drop, formulated previously by Harris et al. (2007, “Manufacturing of High-Temperature Polymer Electrolyte Membranes—Part I: System Design and Modeling,” ASME J. Fuel Cell Sci. Technol., 7, p. 011007), are validated through a case study. Specifically, the flow behavior of a power law polymer electrolyte membrane solution, as it flows through a novel manufacturing system, is investigated. It is found that a strategic design methodology can be used to develop a complete manufacturing system to fabricate a defect free film. Moreover, the casting method offers significant improvements for the thickness uniformity of the membrane film, compared with film that is fabricated using scaled laboratory processes. The pressure losses predicted throughout the system are validated accordingly, not only from experimental results but also from computational fluid dynamics modeling.

Preparation and Characterization of Polymer Electrolyte Membranes by Radiation Grafted Copolymerization

2012 ◽  
Vol 485 ◽  
pp. 110-113 ◽  
Author(s):  
Jun Fang ◽  
Chang Ming Zhang ◽  
Yi Xu Yang
Keyword(s):  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Anion Exchange Membranes ◽  
Electrolyte Membrane ◽  
Electrolyte Membranes ◽  
Potential Applications ◽  
Ft Ir ◽  
Alkaline Membrane ◽  
Ethylene Tetrafluoroethylene

Novel anion exchange membranes were synthesized by grafted copolymerization of 1-vinylimidazole onto pre-irradiated ethylene-tetrafluoroethylene copolymer (ETFE) film, followed by quaternization and alkalization. The structure of the membranes was studied by Fourier transform infrared (FT-IR). The physicochemical and electrochemical properties of the membranes were also characterized. The ionic conductivity of the synthesized membrane is 0.03 S/cm at 30°C. This result indicates that the membrane is suitable polymer electrolyte membrane and so may find potential applications in alkaline membrane fuel cells.

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