High-performance PEDOT-tellurium nanoparticle composite film and preparation method thereof

A composite film and tellurium nanotechnology, applied in the field of high-performance PEDOT-Te nanoparticle composite film and its preparation, can solve the problems of film surface roughness, low increase efficiency, and decrease goodness, etc., to achieve a highly stable reaction process and improve mechanical properties. Strength, performance-enhancing effects

Active Publication Date: 2019-06-21
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, although the composite tellurium nanorods are promising, there are still two serious shortcomings in the current preparation process, which restrict the application of PEDOT
[0004] First of all, the current method of synthesizing composite thin films is a typical two-step method. Tellurium nanorods must be synthesized first, and then mixed with PEDOT:PSS. During the separation and transfer of tellurium nanorods, a large amount of oxidation occurs, and there are Residual surfactant, which greatly reduces the goodness of the contact between elemental tellurium and PEDOT. During the mixing process, tellurium nanorods will also settle and agglomerate in the PEDOT:PSS solution, which seriously affects the uniformity of the film. The surface of the film is extremely rough and easily cracked
In addition, PEDOT:PSS solution, as a water-soluble precursor, is widely used in the preparation of composite materials, but its structure is affected by the bulky anion PSS, and the decrease in order makes the degree of carrier localization intensified, which limits the The improvement of Seebeck coeff

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  • High-performance PEDOT-tellurium nanoparticle composite film and preparation method thereof
  • High-performance PEDOT-tellurium nanoparticle composite film and preparation method thereof
  • High-performance PEDOT-tellurium nanoparticle composite film and preparation method thereof

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preparation example Construction

[0048] The invention relates to a high-performance PEDOT-tellurium nano-particle composite film and a preparation method thereof. The high-alcohol-soluble iron salt containing weakly basic anion and tellurium tetrahalide is used as the oxidant for the reaction, and the high-performance PEDOT film is prepared by a gas phase method. Specifically, including synthetic mixed oxidant FeY 3 / TeX 4 , Preparation of precursor solution, spin coating, polymerization, etc., and also pickling, water washing, etc. after polymerization. Tellurium tetrachloride has the dual role of an oxidant and a precursor of tellurium nanoparticles. While oxidizing the EDOT monomer to polymerize it, it reduces itself to tellurium nanoparticles. The entire process requires only one reaction step; secondly, because the iron salt oxidant has a high Alcohol solubility, PEDOT film with micron-level film thickness can be obtained, and the weakly basic anion in the iron salt oxidant can control the hydrogen ion con...

Embodiment 1

[0064] PEDOT:Cl / Dodecylbenzenesulfonic acid-tellurium quantum dot (PEDOT:Cl / DBSA-2~5nmTe) material

[0065] The deionized aqueous solution containing 6.6028 g of sodium dodecylbenzene sulfonate was heated to 80° C., and the excess iron trichloride aqueous solution was added under vigorous stirring until the precipitation of iron dodecylbenzene sulfonate no longer precipitated. The precipitate was washed ten times with deionized water until no chlorine was detected. Then dissolve it with 250mL of ethanol, evaporate it to dryness in a rotary evaporator, and transfer it to the glove box. Mix 0.0202g of tellurium tetrachloride (molar ratio Fe:Te=80:1) into the dry matter, and then redissolve the mixture in the Hydroethanol, formulated into FeDBSA with a mass fraction of about 79.5% 3 +0.3%TeCl 4 Spin-coating liquid for use. The above solution was spin-coated into a film on a 18*18mm soda lime glass substrate at a rotation speed of 5750 rpm and a spin coating time of 15 s. Place the...

Embodiment 2

[0068] PEDOT:Cl / dodecylbenzenesulfonic acid-tellurium quantum dots (PEDOT:Cl / DBSA-5~20nmTe) material

[0069] The deionized aqueous solution containing 6.6028 g of sodium dodecylbenzene sulfonate was heated to 80° C., and the excess iron trichloride aqueous solution was added under vigorous stirring until the precipitation of iron dodecylbenzene sulfonate no longer precipitated. The precipitate was washed ten times with deionized water until no chlorine was detected. Then it was dissolved in 250 mL of ethanol, evaporated to dryness in a rotary evaporator, and transferred to a glove box. 0.0606g of tellurium tetrachloride (molar ratio Fe:Te=26.7:1) was mixed into the dry matter, and then the mixture was re-dissolved in absolute ethanol to prepare about 79.1% FeDBSA 3 +0.8TeCl 4 % Mass fraction of spin coating liquid for use. The above solution was spin-coated into a film on a 18*18mm soda-lime glass substrate with a rotation speed of 6000rpm and a spin coating time of 18s. Place...

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Abstract

The invention relates to a high-performance PEDOT-tellurium nanoparticle composite film and a preparation method thereof, wherein the composite film comprises a PEDOT film and tellurium nanoparticlesuniformly distributed in the PEDOT film, the particle size of the tellurium nanoparticle is 2-300 nm, and the content of the tellurium nanoparticle is 1.1-33.9 wt%. According to the present invention,with the high-performance PEDOT-tellurium nanoparticle composite film, the Seebeck coefficient of the material can be effectively improved under the extremely low adding amount of tellurium.

Description

Technical field [0001] The invention relates to a high-performance PEDOT-Te nano-particle composite film and a preparation method thereof, and belongs to the field of energy materials. Background technique [0002] Compared with traditional inorganic thermoelectric materials, conductive polymer thermoelectric materials have better ductility, processability and lower cost. Poly-3,4-ethylenedioxythiophene (PEDOT) and its derivatives are currently the most excellent conductive polymers However, the thermoelectric performance of PEDOT is restricted by its lower Seebeck coefficient, and its application is still limited. At present, there are two main types of methods to improve the Seebeck coefficient. One is to adjust the carrier concentration through reduction methods, such as electrochemical reduction (Energy&Environmental Science, 2013, 6,788) and reducing agent reduction (Organic Electronics, 2015, 17, 151). ), etc., the reduction method can greatly increase the Seebeck coeffici...

Claims

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Application Information

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IPC IPC(8): C08L65/00C08K3/02C08K3/30C08J5/18
Inventor 陈立东石唯姚琴瞿三寅
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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