Electrochemical Stability of PEDOT:PSS As Cathodic Binder for Li-Ion Batteries

Das, P.; Komsiyska, Lidiya; Osters, Oliver; Wittstock, Günther

doi:10.1149/06802.0045ecst

Cited by 15 publications

(12 citation statements)

References 26 publications

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“…The latter, in the case of some binders, has been shown to result in improved conductivity [ 30 , 32 , 33 ]. Similarly, the electrochemical stability of the binder at varying temperatures can also be determined through CV [ 34 ].…”

Section: Binder Characteristics and Performance Evaluationmentioning

confidence: 99%

Polymer Binders: Characterization and Development toward Aqueous Electrode Fabrication for Sustainability

Cholewinski

Uceda

et al. 2021

Polymers

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Binders play an important role in electrode processing for energy storage systems. While conventional binders often require hazardous and costly organic solvents, there has been increasing development toward greener and less expensive binders, with a focus on those that can be processed in aqueous conditions. Due to their functional groups, many of these aqueous binders offer further beneficial properties, such as higher adhesion to withstand the large volume changes of several high-capacity electrode materials. In this review, we first discuss the roles of binders in the construction of electrodes, particularly for energy storage systems, summarize typical binder characterization techniques, and then highlight the recent advances on aqueous binder systems, aiming to provide a stepping stone for the development of polymer binders with better sustainability and improved functionalities.

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Section: Binder Characteristics and Performance Evaluationmentioning

confidence: 99%

Polymer Binders: Characterization and Development toward Aqueous Electrode Fabrication for Sustainability

Cholewinski

Uceda

et al. 2021

Polymers

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“…However, most of the studies on PEDOT:PSS are focused on the improvement of electrical conductivity but not on their electrochemical properties. The improvement in electrochemical properties has been sparsely reported for Li‐Ion batteries by the inclusion of lithium salts or by increasing the temperature of the electrochemical cell or for energy storage devices, such as supercapacitors, by the incorporation of ethylene glycol and Triton‐X surfactants . Concerning electroactive soft actuators, the use of PEDOT:PSS as an electrode material has tremendously increased in recent years due to its flexibility and high thermal and chemical stability.…”

Section: Introductionmentioning

confidence: 99%

Poly(3,4‐ethylenedioxythiophene):Poly(styrene sulfonate)/Polyethylene Oxide Electrodes with Improved Electrical and Electrochemical Properties for Soft Microactuators and Microsensors

Rohtlaid

Nguyen

Soyer

et al. 2019

Adv Elect Materials

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The development of microsystems is a rapidly evolving field which enables a wide range of applications for electroactive materials. Microelectromechanical actuators based on electronically conducting polymers are elaborated with an up‐scalable process. Commercial poly(3,4‐ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) is chosen as an easily processable electrode to ensure the reproducibility for further technological production and practical applications. First, the improvement of electrical, electrochemical, and mechanical properties of the PEDOT:PSS electrodes is described by incorporating reactive additives, that is, glycol‐based monomers (mPEG) as polyethylene oxide (PEO) network precursors. Moreover, the custom fit layer‐by‐layer (LbL) process to integrate these PEDOT:PSS/PEO composite electrodes into trilayer microactuators is presented. The incorporation of PEO within PEDOT:PSS improves significantly the electromechanical performances of the resulting microactuators with significant strain (0.82%) and high output forces (472 µN) compared to similar PEDOT based or pristine PEDOT:PSS microactuators. This work provides also the first demonstration that mechanical strain sensing behavior, extensively studied at macroscale, still occurs at microscale for these trilayer systems. Additionally, to this proof of concept, it highlights that output signal is significantly enhanced by downsizing the devices compared to similar macroscale samples. These results open promising perspectives in the development of numerous applications for soft and scalable microactuators and microsensors.

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“…However, they are only scarcely reported, mostly for energy storage devices whose capacities are modified by incorporation of lithium salts, ethylene glycol, and Triton-X surfactants, or by increasing the temperature of the electrochemical cell. [59][60][61] It has been demonstrated recently that the incorporation of poly(ethylene oxide) (PEO) precursors contributes to the improvement of the electrochemical properties [62] of the electrodes and to enhancement of the electrical and mechanical properties, [63] enabling the fabrication of stretchable conductive electrodes.…”

Section: Introductionmentioning

confidence: 99%

Asymmetric PEDOT:PSS Trilayers as Actuating and Sensing Linear Artificial Muscles

Rohtlaid

Nguyen

Ebrahimi‐Takalloo

et al. 2021

Adv Materials Technologies

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Soft ionic actuators and sensors have been intensively studied over the last 20 years. The bending trilayer configuration has been considered a standard architecture, allowing the development of new materials and their optimization. However, bending deformation remains low in force output and presents limited integration capabilities in fast emerging fields like humanoid robotics and actuating textiles. A generalizable architecture of asymmetric supercapacitor‐like trilayers is presented to develop open‐air linear artificial muscles that actuate and sense. First, tuning of electromechanical properties of asymmetric electrodes is performed separately by combining poly(3,4‐ethyl‐enedioxythiophene):poly(styrene sulfonate) with a polyethylene oxide network and 1‐ethyl‐3methylimidazolium bis(trifluoromethanesulfonyl)imide as additives. By varying their content, electronic conductivity can be tuned between 20 and 457 S cm−1, Young's modulus from 1.5 to 0.27 GPa, and volumetric charge density increased by 36%. Asymmetric trilayers are then fabricated using a simple layer stacking process by selecting the optimal combination of materials according to an electromechanical model. Linear strain of 0.5% is obtained in 30 s under ±2 V with 70% of the deformation within 5 s and blocking stress as high as 0.3 MPa. When mechanically stimulated, these asymmetric trilayers demonstrate linear sensing as well, with a sensitivity of 0.38 mV %−1.

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Electrochemical Stability of PEDOT:PSS As Cathodic Binder for Li-Ion Batteries

Cited by 15 publications

References 26 publications

Polymer Binders: Characterization and Development toward Aqueous Electrode Fabrication for Sustainability

Polymer Binders: Characterization and Development toward Aqueous Electrode Fabrication for Sustainability

Poly(3,4‐ethylenedioxythiophene):Poly(styrene sulfonate)/Polyethylene Oxide Electrodes with Improved Electrical and Electrochemical Properties for Soft Microactuators and Microsensors

Asymmetric PEDOT:PSS Trilayers as Actuating and Sensing Linear Artificial Muscles

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