Characterization of carboxy methylcellulose doped with DTAB as new types of biopolymer electrolytes

Abstract

The investigation of new solid biopolymer electrolyte (BEs) system based on carboxy methylcellulose (CMC) is creating opportunity for new types of electrochemical devices, which may themselves, in turn, revolutionize many industrial areas. Biodegradable carboxy methylcellulose (CMC) doped with dodecyltrimethyl ammonium bromide (DTAB) as BEs were prepared via solution-casting method. Upon addition of 35 wt. % of DTAB, highest ionic conductivity of 7·72 × 10 − 4 Scm − 1 was achieved due to its higher amorphous region compared to other samples prepared. This result had been further proven in FTIR study. Temperature dependence relationship obeys the Arrhenius rule from which the activation energy, E a, for ionic conductivity and activation energy for relaxation process, E τ , were evaluated. The divergent values between E a for ionic conductivity and relaxation process E τ shows that the ions hop by jumping over a potential barrier.