Note: Intro -- Preface -- Acknowledgements -- Contents -- Editors and Contributors -- 1 Organic-Inorganic Membranes Impregnated with Ionic Liquid -- Abstract -- 1 Introduction -- 2 Ionic Liquids: General Properties and Applications -- 3 Ionic Liquids as Electrolytes in Fuel Cells -- 4 Ionic Liquid Polymer Membranes for Fuel Cells -- 4.1 Ionic Liquid/Polymer Membranes -- 4.2 Polymerized Ionic Liquid Membranes -- 4.3 IL Gel and Composite Polymer Membranes -- 5 Conclusions -- Acknowledgements -- References -- 2 Organic/TiO2 Nanocomposite Membranes: Recent Developments -- Abstract -- 1 Introduction -- 2 TiO2-Polymer Electrolyte Membranes (PEMs) -- 2.1 Perfluorinated Organic-Inorganic Nanocomposite Polymer Electrolyte Membranes (PEMs) -- 2.2 Acid-Base Polymer Complex-Based Organic-Inorganic Nanocomposite PEMs -- 2.3 TiO2-Modified Polytetrafluoroethylene Membranes -- 2.4 Poly(ether ether ketone)-Based Nanocomposite PEMs -- 2.5 PANI Based Membranes -- 2.6 PES Based Membranes -- 2.7 Polysulfone-Based Membranes -- 2.8 TiO2 Solar Cells -- 2.9 Carbon Materials and Metal-Carbon Nanotube (CNTs)-TiO2 Composites -- 2.9.1 Carbon-TiO2 Composites -- 2.9.2 Graphene (GN)-TiO2 Composites -- 3 Conclusions -- Acknowledgements -- References -- 3 Organic/Silica Nanocomposite Membranes -- Abstract -- 1 Introduction -- 2 Silica Nanoparticle-Based Membranes -- 3 Conclusion -- References -- 4 Organic/Zeolites Nanocomposite Membranes -- Abstract -- 1 Introduction -- 2 Basic Concepts About Zeolites -- 3 Polymer-Zeolite Composite Membranes: The Role of the Zeolite -- 3.1 Influence of Si/Al Ratio -- 3.2 Proton Mobility in Zeolites -- 3.3 Internal and External Surface Area -- 3.4 Configurational Diffusion -- 3.5 Crystallite Size [17, 18] -- 3.6 Functionalization of Zeolite Surface -- 3.7 Selectivity, Proton Conductivity, and Permeability. , 4 Techniques for Producing Organic/Zeolite Nanocomposite Membranes -- 5 Synthetic Polymers/Zeolite Nanocomposite Membranes for PEMFCs -- 5.1 Route 1: Zeolite + Organic Monomers -- 5.2 Route 3: Inorganic Precursor + Organic Polymer -- 5.3 Route 4: Zeolite + Organic Polymer -- 6 Natural Polymers/Zeolite Nanocomposite Membranes for PEMFCs -- 7 Conclusions -- Acknowledgements -- References -- 5 Composite Membranes Based on Heteropolyacids and Their Applications in Fuel Cells -- Abstract -- 1 Introduction -- 2 Heteropolyacids Types and Structures -- 3 HPAs and Proton Transport in Fuel Cells -- 4 HPAs in PEM Fuel Cell -- 5 HPAs in High-Temperature and Low-Humidity PEMFC -- 6 HPAs in DMFC -- 7 Concluding Remarks and Future Perspectives -- Acknowledgements -- References -- 6 Organic/Montmorillonite Nanocomposite Membranes -- Abstract -- 1 Introduction -- 2 Membrane Fabrication Methods -- 2.1 Phase Inversion -- 2.2 Immersion Precipitation -- 2.3 Evaporation-Induced Phase Separation -- 3 Montmorillonite-Based Nanocomposites Membranes -- 4 Conclusion -- References -- 7 Electrospun Nanocomposite Materials for Polymer Electrolyte Membrane Methanol Fuel Cells -- Abstract -- 1 Introduction -- 2 Methanol Crossover and Low Proton Conductivity -- 3 Composite SPEEK -- 4 SPEEK-Clay Nanocomposite as PEM for DMFC -- 5 Morphology Types and the Importance of Exfoliated Surface Structure on DMFC Performance -- 6 Preparation of Exfoliated Nanocomposite Membranes -- 7 Electrospinning as a Membrane Morphological Modification Technique -- 8 Electrospun Polymer-Based Nanofiber Membranes for DMFC Application -- 9 Electrospinning Parameters -- 10 Future Directions and Conclusion -- References -- 8 A Basic Overview of Fuel Cells: Thermodynamics and Cell Efficiency -- Abstract -- 1 What Is a Fuel Cell? -- 2 Fuel Cell Structure and Classification -- 3 Fuel Cell Construction. , 4 PEMFC Types, Electrode Reactions, and Cell Potential -- 4.1 H2/O2 PEMFC -- 4.2 Direct Methanol Fuel Cells (DMFC) -- 4.3 Direct Ethanol Fuel Cells (DEFC) -- 4.4 Direct Formic Acid Fuel Cells (DFAFC) -- 4.5 Direct Borohydride Fuel Cells (DBFCs) -- 5 Fuel Cell Thermodynamics -- 5.1 Effect of Temperature -- 5.2 Effect of Pressure -- 5.3 Effect of Concentration of Reactant -- 6 Fuel Cell Efficiency -- 6.1 Losses in Actual System -- 6.2 Activation Overpotential -- 6.3 Ohmic Polarization Losses -- 6.4 Mass Transport Overpotential -- 7 Conclusion -- References -- 9 Organic/Inorganic and Sulfated Zirconia Nanocomposite Membranes for Proton-Exchange Membrane Fuel Cells -- Abstract -- 1 Introduction -- 1.1 Proton-Exchange Membranes (PEMs) -- 2 Organic/Inorganic Hybrid Membranes -- 3 Organic-Sulfated Metal Oxide Hybrid Membrane -- 4 Sulfated Zirconia Nanocomposite Membranes -- 5 Conclusion and Future Prospects -- Acknowledgements -- References -- 10 Electrochemical Promotional Role of Under-Rib Convection-Based Flow-Field in Polymer Electrolyte Membrane Fuel Cells -- Abstract -- 1 Introduction -- 2 General Description of Performance Improvements in PEMFCs -- 2.1 Proton Exchange Membrane -- 2.2 Electrode and Catalyst -- 2.3 Gas Diffusion Layer -- 2.4 Membrane Electrode Assembly -- 2.5 Bipolar Plate -- 2.6 Single Cell and Stack -- 2.6.1 Water and Heat Management -- 2.6.2 Fuel Crossover, Oxidation, and CO Poisoning -- 2.6.3 Scale-up and Long-Term Experiments -- 3 Structured Techniques for Flow-Field Optimization -- 3.1 Experimental Approaches to Flow-Field Optimization -- 3.1.1 Current Density Measurement -- 3.1.2 Flow Visualization -- 3.1.3 Polarization Curve Evaluation -- 3.2 Modeling Approaches to Flow Optimization -- 3.2.1 Computational Fluid Dynamic Modeling -- 3.2.2 Two-Phase Modeling for Water Management -- 3.2.3 Complex Flow-field Interaction Modeling. , 3.3 Validation of Experimental and Numerical Results -- 4 New Flow-field Optimization Approaches Utilizing Under-Rib Convection -- 4.1 Homogeneous Distribution of the Reactants -- 4.2 Uniformity of Temperature and Current Density Distributions -- 4.3 Facilitation of Liquid Water Discharge -- 4.4 Reduction in Pressure Drop -- 4.5 Improvement in Output Power -- 5 Summary -- References -- 11 Methods for the Preparation of Organic-Inorganic Nanocomposite Polymer Electrolyte Membranes for Fuel Cells -- Abstract -- 1 Introduction -- 2 Methods for Preparation of Nanocomposite Polymer Electrolyte Membranes -- 2.1 Blending of Nanoparticles in Polymer Matrix -- 2.1.1 Phase Inversion Method for Preparation of PEMs -- 2.1.2 Solution Casting Method -- 2.1.3 Hot Press -- 2.2 Doping or Infiltration and Precipitation of Nanoparticles and Precursors -- 2.3 Self-assembly of Nanoparticles -- 2.4 Non-hydrolytic Sol-Gel (NHSG) Method -- 2.5 Layer-by-Layer Fabrication Method -- 2.6 Nonequilibrium Impregnation Reduction -- 2.7 Surface Patterning Method -- 3 Future Directions and Conclusion -- References -- 12 An Overview of Chemical and Mechanical Stabilities of Polymer Electrolytes Membrane -- Abstract -- 1 Introduction -- 2 Durability of Polymer Electrolyte Membrane (PEM) -- 3 Proton Conductivity of PEM -- 4 Chemical Stabilities and Degradation of PEM -- 5 Mechanical Stability and Degradation of PEM -- 6 Conclusion -- Acknowledgements -- References -- 13 Electrospun Nanocomposite Materials for Polymer Electrolyte Membrane Fuel Cells -- Abstract -- 1 Introduction -- 2 Electrospinning Process -- 2.1 Electrospun Fibers -- 2.1.1 Poly(vinylidene fluoride) (PVDF) -- 2.1.2 Poly(vinyl alcohol) (PVA) -- 2.1.3 Poly(phenylene oxide) (PPO) -- 2.1.4 Poly(arylene ether)s -- 2.1.5 Poly(imide)s -- 2.1.6 Poly(benzimidazole) (PBI) -- 2.2 Crosslinking of Electrospun Fibers. , 2.3 Interface Bonding -- 3 Reducing Methanol Crossover -- 4 Improving Proton Conductivity -- 4.1 Electrospinning of Nafion -- 4.2 Aligned Nanofibers -- 5 Other Applications of Electrospinning in Fuel Cells -- 6 Conclusion -- References -- 14 Fabrication Techniques for the Polymer Electrolyte Membranes for Fuel Cells -- Abstract -- 1 Introduction -- 2 Recent Developments of PEM-Based on Organic-Inorganic Nanocomposites -- 3 Fabrication Techniques for the Preparation of PEM -- 3.1 Different Polymerization Routes -- 3.2 Plasma Methods -- 3.3 Sol-Gel Method -- 3.4 Ultrasonic Coating Technique -- 3.5 Phase Inversion Method -- 3.6 In Situ Reduction -- 3.7 Catalyst-Coated Membrane by Screen Printing Method -- 3.8 Solution Casting Method -- 3.9 Other Methods -- 4 Summary -- Acknowledgements -- References -- 15 Chitosan-Based Polymer Electrolyte Membranes for Fuel Cell Applications -- Abstract -- 1 Introduction -- 2 Chitosan: An Overview -- 3 Characterization of the Polymer Membrane and Their Desired Properties -- 4 Chitosan Based Membranes for Polymer Electrolyte -- 4.1 Chitosan Blend Polymer Electrolyte -- 4.2 Chitosan Cross-Linked Polymer Electrolyte -- 4.3 Chitosan Polymer Composite Based Polymer Electrode -- 5 Chitosan for Fuel Cell -- 6 Chitosan for Biofuel Cell -- 6.1 Microbial Biofuel Cell -- 6.2 Enzymatic Biofuel Cell -- 7 Conclusions -- Acknowledgements -- References -- 16 Fuel Cells: Construction, Design, and Materials -- Abstract -- 1 Introduction -- 2 Different Types of Fuel Cells -- 3 Construction and Design of Different FC -- 3.1 PEMFC -- 3.2 DMFC -- 3.3 AEMFC -- 3.4 PAFC -- 3.5 SOFC -- 3.6 MCFC -- 4 Catalysts for Different FCs -- 5 Materials and Methods for Preparation of PEM for Fuel Cells -- 6 Characterizations and Characteristic Properties of PEM for Different FC -- 7 Summary -- References. , 17 Proton Conducting Polymer Electrolytes for Fuel Cells via Electrospinning Technique.