A Text Book of Battery Science

Innovation in the field of electrochemical energy sources is one of the current topics of research because of its usage in portable electronic devices. The increasing importance of portable electronic devices requires an improvement in the efficiency of materials which are used in electrochemical devices. Scientists and researchers from all over the world are currently working for the development of high energy Polymer battery with good cyclic behavior and Proton Exchange Membrane Fuel cell. The prime requirement of electrolytic membrane which is yet to be met in batteries and fuel cells is its enhanced ionic conductivity at ambient temperatures at low cost. Hence the need for new types of solid polymer electrolytes has been increasing in the last two decades. A number of proton ion conducting polymer electrolytes have been developed in the last few decades to meet the requirement of the electrochemical devices. The literature review shows that proton ion conducting polymer electrolyte based on polymer PVA and non essential amino acid Proline is rare. Polyvinyl alcohol (PVA) is a semi crystalline polymer studied extensively because of its many interesting physical properties which arise from the presence of OH groups and the hydrogen bond
formation. It is a potential material having a very high dielectric strength. Generally,Amino acids can be called the building blocks of protein and are important for human body. Amino acids are classified into essential (dietary intake) and non essential amino acids (synthesized in the body through metabolic process). There are 20 amino acids,nine of which called essential and eleven of which are labeled as non essential. Essential amino acids can’t be produced by the body and must be derived from food. Nonessential amino acids are synthesized by the human body. Amino acids are very interesting materials for NLO and biomedical applications. Generally, amino acids contain a proton donor carboxyl acid (-COO) group and the proton acceptor amino (-NH2) group in them. Also, it is seen from the literature that ammonium salts are good proton donors. The present thesis focuses on the preparation and characterization of polymer electrolyte based on biodegradable polymer PVA and non essential amino acid Proline with ammonium salts