All-polymer battery system based on polypyrrole (PPy)/para (toluene sulfonic acid) (pTS) and polypyrrole (PPy)/indigo carmine (IC) free standing films

Abstract

. (2012). All-polymer battery system based on polypyrrole (PPy)/para (toluene sulfonic acid) (pTS) and polypyrrole (PPy)/indigo carmine (IC) free standing films. Electrochimica Acta, 83 209-215.All-polymer battery system based on polypyrrole (PPy)/para (toluene sulfonic acid) (pTS) and polypyrrole (PPy)/indigo carmine (IC) free standing films AbstractIn this study, we introduce a novel all-polymer battery system based on conducting polymer (polypyrrole, PPy) doped with dopants of para (toluene sulfonic acid) (pTS) and indigo carmine (IC), respectively. The performance of the systems consisting of polypyrrole-para (toluene sulfonic acid) (PPy-pTS) as cathode and polypyrrole-indigo carmine (PPy-IC) as anode in conjunction with either a polymer based electrolyte or a commercial organic electrolyte of 1M LiPF 6 in a 50:50 (v/v) mixture of ethylene carbonate (EC) and dimethyl carbonate (DMC) was evaluated. In the system, all the free-standing PPy-pTS and PPy-IC films were directly used without needing any metal substrate support to hold the electro active material. Electrochemical measurements demonstrated that the PPy-pTS/PPy-IC (commercial electrolyte) system exhibited a reversible discharge capacity of 36 mAh g -1 at 0.05 mA cm -2 after 50 cycles, is 92% of the initial discharge capacity. In the case of PPy-pTS/PPy-IC (polymer electrolyte), the reversible discharge capacity after 50 cycles was 16 mAh g -1 , 76% of the intial discharge capacity. This work deals with the fabrication of a novel all polymer battery system, with significant advantages in terms of capacity and reasonable stability. This may lead to a future generation of all polymer batteries that are suitable for implanted medical devices used in biological and biomedical systems. (c) 2012 Elsevier Ltd. All rights reserved. AbstractIn this present study, we introduce a novel all-polymer battery system based on conducting polymer (polypyrrole, PPy) doped with redox-active compounds of para (toluene sulfonic acid) (pTS) and indigo carmine (IC), respectively. The performance of the systems consisting of polypyrrole-para (toluene sulfonic acid) (PPy-pTS) as cathode and polypyrrole-indigo carmine (PPy-IC) as anode in conjunction with gel polymer electrolyte and commercial electrolyte of 1M LiPF 6 are evaluated. In the system, all the free-standing PPy-pTS and PPy-IC films were directly used without need any metal substrate to act as an electrical conductor.Electrochemical measurements demonstrated that the PPy-pTS/PPy-IC (commercial electrolyte) system exhibited a discharge capacity of 36 mAh g -1 at 0.05 mA cm -2 after 50 cycles, which is around 92 % of the initial discharge capacity. In the case of PPy-pTS/PPy-IC (polymer electrolyte), the discharge capacity retention was 16 mAh g -1 , which is also 76 % of the intial discharge capacity. The capacity degradation rate was calculated only 0.16 and 0.48 %/cycle for the PPy-pTS/PPy-IC (commercial electrolyte) and PPy-pTS/PPy-IC (polymer electrolyte) system, respectively, confirming stable cycling performance...

Novel Pliable Electrodes for Flexible Electrochemical Energy Storage Devices: Recent Progress and Challenges

“…The energy density for the PET@GnPs fibers is comparable to that of Ni metal hydride battery but with a higher power density. The electrolyte used for the testing is aqueous 1M H2SO4 electrochemical impedance spectroscopy (EIS) was performed from a high frequency of 10 5 Hz to a low frequency of 0.02 Hz. The GCD was performed at a current density of 1 A/g, with the voltage cycling between 0-1 V. The PET nanofibers were first fabricated via a conventional electrospinning method, as shown in Figure 13a.…”

“…To be acceptable for use, these electronic devices require a small, flexible and lightweight energy storage system that is robust under bending, twisting, compressing and stretching deformations without compromising their functions and performance. Flexible energy storage systems such as flexible alkaline batteries, [3] flexible zinc carbon batteries [4] all-polymer batteries, [5] polymer lithium-metal batteries, [6] flexible rechargeable lithium ion batteries (LIBs) [7] and flexible supercapacitors (SCs) [8] have been explored and investigated. Among these, flexible LIBs and SCs are very promising due to their higher energy and power density, longer life and environmental benignity.…”

Electroconducting materials based on polypyrrole

“…Thus, PPy doped with two different dopants, e.g., para (toluene sulfonic acid) (pTS) and indigo carmine (IC), can act as cathode (system PPy/pTS) or anode (system PPy / IC) in the combination with polymer-based electrolyte or commercial organic electrolyte. [69]. As far as the stability of these systems concerns, it was observed retention of 76 and 90% of the initial reversible discharge capacity after 50 cycles in the system PPy-pTS / PPy-IC (electrolyte) for polymer-based and commercial based-electrolytes, respectfully.…”

“…[33,69,80]. Still, n-doped polymers could be synthesized by incorporation of large polymeric anions in polymer films during their polymerization.…”

“…sensors, batteries, electrochemical capacitors, with controlled release of the anions out of polymer film being of particular significance during medical applications [10,28,[68][69][70][71][72][73][74].…”