"Nanocomposite Membranes for PEMFC Preparation & Characterization" is a comprehensive book written by P. Martina that delves into the use of nanomaterials in preparing and characterizing membranes for polymer electrolyte membrane fuel cells (PEMFCs). The book provides an overview of fuel cell technology and energy conversion, and how the use of nanomaterials such as graphene, carbon nanotubes, and nanoparticles can improve the performance of PEMFCs.The book covers various techniques used for the preparation of nanocomposite membranes, including electrospinning, blending, casting, and self-assembly. The interaction between the ionomer and polymer matrix, as well as the dispersion and interfacial interaction of the filler, are discussed in detail.The mechanical properties, thermal stability, proton conductivity, water management, gas permeability, methanol crossover, and durability of the nanocomposite membranes are also analyzed. The book explores the use of nanomaterials in the electrode and catalyst layer, and their effect on electrochemical performance, which is analyzed through single-cell testing, impedance spectroscopy, polarization curve, and electrocatalyst performance.The book also delves into surface analysis techniques, including spectroscopy, X-ray diffraction, microscopy, scanning electron microscopy, transmission electron microscopy, atomic force microscopy, energy dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, Raman spectroscopy, and nuclear magnetic resonance spectroscopy.Overall, "Nanocomposite Membranes for PEMFC Preparation & Characterization" is a valuable resource for researchers and professionals in the field of fuel cell technology who seek to improve the performance of PEMFCs using nanomaterials.