Synthesis And Characterisation Of Polyaniline (PAni) Membranes For Fuel Cell

Abstract

Over the past decade or so, alternative energy plays a pivotal role in addressing challenges posed by nature. Polymer electrolyte membrane fuel cell is one of the promising alternative energy and there has been significant research and technological investments done in this field. The key information and future prospective of the field is energy conversion and storage, both of which are essential in order to meet the challenges of global warming and the limited fossil fuel supply. However, polymer membrane in particular plays a crucial role in advancing this technology further. The utilization of conducting polymers in manufacturing membranes combining their electrochemical properties along with mechanical properties is of primary importance to enhance the efficiency of this system. In the present study blends of high impact polystyrene (HIPS) and polyaniline (PAni) were obtained with the aim of producing membranes for fuel cell. HIPS and PAni were dissolved in tetrachloroethylene, a common solvent for both materials. After dissolution, PAni was dispersed in an HIPS polymeric matrix. The membranes were molded on to glass plates using a laminator to keep thickness constant, and the solvent evaporated slowly for 24 h under room temperature. The amount of polyaniline used was 10 and 20 % weight. The electronic and structural properties were carried out using X-ray photoelectron spectroscopy (XPS), Thermogravimetric Analysis (TGA) Raman spectroscopy, Scanning electronic microscopic (SEM). The analysis indicate that PAni incorporation and its dispersion into the polymeric matrix modifies the membranes properties and show improvement in efficiency.

Facile one step synthesis and gas sensing behavior of PANI/Mn3O4 nanocomposite

“…Among conducting polymers, PANI has been investigated widely due to its remarkable overall properties, for instance, low cost, simple synthesis & granular metals like behavior [5]. It has wide application in the area of microelectronic devices, light weight batteries [6,7], sensors [8,9], supercapacitors [10], microwave absorption [11], corrosion inhibition [12], catalysis [13] etc. Various metal oxides such as TiO2 [14], SnO2 [15], In2O3 [16], MoO3 [17], WO3 [18], NiO [19], chalcogenides [20], etc.…”

Novel Composite Membranes Based on Polyaniline/Ionic Liquids for PEM Fuel Cells Applications

“…Variety of oxidants can be used for PANI preparation such as persulfates and dichromates. Among all, ammonium persulfate is the most widely used oxidant, by which PANI shows a 90% yield as well as a high conductivity of 10 -1 S/cm [13]. In addition, PANI is also prepared in the presence of a dopant, an acid or a base, depending on the desired application [13].…”

“…Among all, ammonium persulfate is the most widely used oxidant, by which PANI shows a 90% yield as well as a high conductivity of 10 -1 S/cm [13]. In addition, PANI is also prepared in the presence of a dopant, an acid or a base, depending on the desired application [13]. Conductive polyaniline, commonly known as emeraldine salt (ES), is synthesized doped in acidic medium (pH 1-3) [14].…”