Conductive polymer

About: Conductive polymer is a research topic. Over the lifetime, 21817 publications have been published within this topic receiving 692491 citations. The topic is also known as: intrinsically conducting polymer & ICP.

Composite Polymer Electrolytes with Improved Lithium Metal Electrode Interfacial Properties I. Elechtrochemical Properties of Dry PEO‐LiX Systems

Abstract: Several types of lithium ion conducting polymer electrolytes have been synthesized by hot-pressing homogeneous mixtures of the components, namely, poly(ethylene oxide) (PEO) as the polymer matrix, lithium trifluoromethane sulfonate (LiCF{sub 3}SO{sub 3}), and lithium tetrafluoroborate (LiBF{sub 4}), respectively, as the lithium salt, and lithium gamma-aluminate {gamma}-LiAlO{sub 2}, as a ceramic filler. This preparation procedure avoids any step including liquids so that plasticizer-free, composite polymer electrolytes can be obtained. These electrolyte have enhanced electrochemical properties, such as an ionic conductivity of the order of 10{sup {minus}4} S/cm at 80--90 C and an anodic breakdown voltage higher than 4 V vs. Li. In addition, and most importantly, the combination of the dry feature of the synthesis procedure with the dispersion of the ceramic powder, concurs to provide these composite electrolytes with an exceptionally high stability with the lithium metal electrode. In fact, this electrode cycles in these dry polymer electrolytes with a very high efficiency, i.e., approaching 99%. This in turn suggests the suitability of the electrolytes for the fabrication of improved rechargeable lithium polymer batteries.

Polymer sensors and actuators

Abstract: I Poymer Sensors Membranes & Polymer coatings for microelectronic chemical sensors LB & molecular electronics sensors Polymer sorbents for gas sensing Polymers for Optical Sensors Electects and ferroelective Electron conducting polymer sensors Ion conducting polymer sensors II Polymer Actuators Actuating Systems in Biology Bio-motors based on Protein Assemblies Magnetic Field Sensitive Polymeric Actuators Electochemomechanical Devices based on Conducting Polymers Ion Exchange Membrane as Electrically Controllable Artificial Muscles Polymer Motors based on Hydrophilic and Hydrophobic Interactions Soft and Actuators using Polymer Gels Actuating Devices of Liquid Crystalline Polymers

Improvement of the Cycling Performance of LiNi0.6Co0.2Mn0.2O2 Cathode Active Materials by a Dual-Conductive Polymer Coating

Abstract: LiNi0.6Co0.2Mn0.2O2 cathode materials were surface-modified by coating with a dual conductive poly(3,4-ethylenedioxythiophene)-co-poly(ethylene glycol) (PEDOT-co-PEG) copolymer, and their resulting electrochemical properties were investigated. The surface-modified LiNi0.6Co0.2Mn0.2O2 cathode material exhibited a high discharge capacity and good high rate performance due to enhanced transport of Li+ ions as well as electrons. The presence of a protective conducting polymer layer formed on the cathode also suppressed the growth of a resistive layer and inhibited the dissolution of transition metals from the active cathode materials, which resulted in more stable cycling characteristics than the pristine LiNi0.6Co0.2Mn0.2O2 cathode material at 55 oC.

Toward a Stretchable, Elastic, and Electrically Conductive Nanocomposite: Morphology and Properties of Poly[styrene-b-(ethylene-co-butylene)-b-styrene]/Multiwalled Carbon Nanotube Composites Fabricated by High-Shear Processing

Abstract: Nanocomposites based on a thermoplastic elastomer, poly[styrene-b-(ethylene-co-butylene)-b-styrene] triblock copolymer (SEBS), and multiwalled carbon nanotubes (MWCNTs) were fabricated using a high-shear processing technique. The MWCNTs were homogeneously dispersed in the SEBS matrix, even at an MWCNT concentration of 15 wt %. The addition of MWCNTs to the elastomer significantly enhanced its electrical conductivity and mechanical properties, including increased modulus and tensile strength, with only a slight loss of stretchability. The fabricated nanocomposites loaded with 15 wt % MWCNT showed an excellent stretchability of more than 600% and a high strain recovery under mechanical deformation. Moreover, the conductivity of fabricated conductive nanocomposites only slowly decreases with uniaxial stretching. Therefore, a stretchable and elastic conductive polymer nanocomposite was successfully fabricated. In addition, the effect of the uniformly dispersed MWCNTs on the SEBS microphase separation behavior...

Organic small molecules and polymers as an electrode material for rechargeable lithium ion batteries

Abstract: Organic electrode materials are promising for electrochemical energy storage devices because they have a high theoretical capacity, structural diversity, and flexibility In addition, they are light weight, inexpensive, and environmentally benign Organic electrode materials are a promising alternative to conventional inorganic materials Various organic materials, such as conducting polymers, organodisulfides, nitroxyl radical polymers, and conjugated carbonyl compounds, have been studied as electrode materials for lithium batteries Among them, small organic carbonyl compounds and polymers containing carbonyls have been widely studied as electrode materials because of their high theoretical capacity, fast redox kinetics, and structural diversity However, these materials have intrinsic drawbacks, such as solubility in electrolyte media and a low conductivity Herein, methods to solve these problems by increasing the polarity are discussed The polarity of small molecules could be increased by forming salts In addition, the conductivity could be enhanced using a chemical doping strategy or forming a composite with a conductive additive This review provides guidance for the design of a new type of organic material for next-generation rechargeable batteries