Polypyrrole-amphiphile blend electrodes: new reaction-driven structural processes with possible formation of vesicles

Otero, Toribio F.; Valero, Laura; Martínez, José G.

doi:10.1016/j.electacta.2017.06.006

Cited by 11 publications

(15 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among them, polypyrrole (PPy) has a higher electrical conductivity than other polymers due to its narrow band gap, and has been shown to be compounded with other materials to form high-performance hybrids . [14][15][16][17] As a result, pyrrole hybrid compounds are also widely and intensively studied and they have become a hot research area with good applications in many applications such as supercapacitors, [18][19][20][21][22] lithium-ion batteries, [23][24][25] electrochromic devices, [26][27][28][29] functionalized electrodes, [30][31][32] and optoelectronic devices. [33][34][35] The advantages of easy processing and plasticity, excellent mechanical flexibility [36][37][38] together with variable conductivity 39,40 make organic semiconductor polymers a functional material with excellent properties in the development of electronic, optical, and optoelectronic conversion devices and other fields.…”

Section: Introductionmentioning

confidence: 99%

Designing cross‐linked pyrrole‐thieno [3,4‐ b ] thiophene copolymer to push forward electrochemical performance and access flexible micro‐supercapacitor with ultra‐long cycling stability

Wang

Meng

Sun

et al. 2021

Intl J of Energy Research

View full text Add to dashboard Cite

Summary While higher high specific surface area allows micro‐supercapacitor (MSC) electrode materials to have improved performance, it also tends to make them less stable thermodynamically and microstructurally, which can easily deteriorate and seriously affects their service life. So here, we have chosen a cross‐linked copolymer film structure as MSC electrodes. The pyrrole‐thieno [3,4‐b] thiophene (TbT) copolymer film (namely PPy‐co‐TbT) exhibits high specific capacity, which can reach 47.8 mF cm−2 (a specific volumetric capacitance of 23.9 F cm−3 and a specific gravimetric capacitance of 28.1 F g−1) at a current density of 0.1 mA cm−2 using LiCl/PVA gel electrolyte with ultra‐long cycling stability (capacitance retention after 50 000 charge/discharge cycles is still higher than 93%, which is the leading level in MSCs). The electrochemical performance of this cross‐linked copolymer is superior to that of the single‐component polymer, achieving a 1 + 1 > 2 effect. Both features of cross‐linking and copolymerization have positive effects on microelectrodes requiring stable microstructures and high performance. The structurally stable cross‐linked copolymer obtained by copolymerization design may become a durable material for next generation ultra‐long‐life, high‐performance micro‐supercapacitor electrodes and will be widely developed. Highlights The electrochemical performance of the cross‐linked copolymer electrode reaches 1 + 1 > 2. A pioneering cross‐linked copolymer was designed to prolong the stability of microsupercapacitor. Capacitance retention rate is still higher than 93% after 50 000 cycles, which is in the leading position. Provides an important thought for the manufacture of ultra‐long‐life microsupercapacitor.

show abstract

Section: Introductionmentioning

confidence: 99%

Designing cross‐linked pyrrole‐thieno [3,4‐ b ] thiophene copolymer to push forward electrochemical performance and access flexible micro‐supercapacitor with ultra‐long cycling stability

Wang

Meng

Sun

et al. 2021

Intl J of Energy Research

View full text Add to dashboard Cite

show abstract

“…Those films of conducting polymers with large amphiphile anions or polyelectrolytes following reaction 2 show, beyond a reduction threshold (swollen gel) a new structural change is presented by voltammetric, coulovoltammetric and chronoamperometric responses ,,,. The process is related to the high water content and has been attributed to the formation of vesicles or lamellas,, whose corroboration requires some new evidences and should open a new field for encapsulated biomimetic reactions and for artificial vacuolar transportation.…”

Section: Identification Of Different Reaction‐driven Structural Effecmentioning

confidence: 82%

Structural and Conformational Chemistry from Electrochemical Molecular Machines. Replicating Biological Functions. A Review

Otero

2017

The Chemical Record

Self Cite

View full text Add to dashboard Cite

Each constitutive chain of a conducting polymer electrode acts as a reversible multi-step electrochemical molecular motor: reversible reactions drive reversible conformational movements of the chain. The reaction-driven cooperative actuation of those molecular machines generates, or destroys, inside the film the free volume required to lodge/expel balancing counterions and solvent: reactions drive reversible film volume variations, which basic structural components are here identified and quantified from electrochemical responses. The content of the reactive dense gel (chemical molecular machines, ions and water) mimics that of the intracellular matrix in living functional cells. Reaction-driven properties (composition-dependent properties) and devices replicate biological functions and organs. An emerging technological world of soft, wet, reaction-driven, multifunctional and biomimetic devices and the concomitant zoomorphic or anthropomorphic robots is presented.

show abstract

“…This phenomenon has been previously observed in some conducting polymers, where an extra irreversible reduction charge was consumed during every cycle. [40][41][42] It is possible to consider that redox reactions will be charge reversible reactions consuming the same oxidation and reduction charges (with opposite sign) and, if a polymerization occurs, some charge will also be consumed during this process. Thus, it is possible to consider that the total net consumed charge during one cycle of the cyclic voltammetry should be:…”

Section: Electropolymerization By Cyclic Voltammetrymentioning

confidence: 99%

Electrochemical Considerations for the Electropolymerization of PPy on PEDOT:PSS for Yarn Actuator Applications

2023

Self Cite

View full text Add to dashboard Cite

Electrochemical devices as conducting polymer‐based actuators or textile actuators often use layers of different conducting polymers. Although research has been performed on such devices, it is still not very clear how the different layers affect each other. Here we attempt to clarify such influence on yarn actuators using electrochemical methods. Different electrochemical methods as cyclic voltammetry, chronoamperometry or chronopotentiometry were used to electropolymerize polypyrrole on top of a poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) coated textile yarns by using different applied electrochemical conditions (potentials/currents). Thus, we found that selecting suitable conditions (as an applied potential of +0.8 V) for such electropolymerization is key to obtain a polypyrrole of high quality. Besides, we show that the underlying layer of PEDOT:PSS has an influence on such electropolymerization conditions and can be subjected to parallel redox reactions as oxidation or electrochemical degradation that influence the electropolymerized polypyrrole.

show abstract

Polypyrrole-amphiphile blend electrodes: new reaction-driven structural processes with possible formation of vesicles

Cited by 11 publications

References 48 publications

Designing cross‐linked pyrrole‐thieno [3,4‐ b ] thiophene copolymer to push forward electrochemical performance and access flexible micro‐supercapacitor with ultra‐long cycling stability

Designing cross‐linked pyrrole‐thieno [3,4‐ b ] thiophene copolymer to push forward electrochemical performance and access flexible micro‐supercapacitor with ultra‐long cycling stability

Structural and Conformational Chemistry from Electrochemical Molecular Machines. Replicating Biological Functions. A Review

Electrochemical Considerations for the Electropolymerization of PPy on PEDOT:PSS for Yarn Actuator Applications

Contact Info

Product

Resources

About