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Preparation method of core-shell silver nanowire based on conductive polymer

A conductive polymer, silver nanowire technology, applied in nanotechnology, nanotechnology, nanotechnology and other directions for materials and surface science, can solve the problems of high material cost, high cost, high absolute cost, and ensure completeness and density, high controllability and greenness, and the effect of reducing material cost

Active Publication Date: 2019-04-23
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] When using traditional methods to prepare flexible transparent electrodes with silver nanowires, the biggest problem is that silver, as a noble metal, has high cost itself, and the cost of materials required to form a unit of silver nanowires is even higher, which limits the application of flexible transparent electrodes in flexible electronics. large area application
[0004] However, copper / silver core-shell nanowires using flexible transparent electrodes still have the following problems: Although copper is a non-noble metal, the cost is relatively lower than silver, but its absolute cost is still high
Therefore, copper / silver core-shell nanowires still cannot fundamentally solve the high cost problem of flexible transparent electrodes

Method used

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  • Preparation method of core-shell silver nanowire based on conductive polymer
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Experimental program
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Effect test

Embodiment 1

[0030] Pyrrole is stirred and dissolved in 0.2mol / L at room temperature, and pH is 7.4 in the phosphate buffer solution of 7.4, forms the pyrrole solution that molar concentration is 0.1mol / L, then adds naphthalenesulfonic acid, makes the molar concentration of naphthalenesulfonic acid in solution be 10mmol / L to form a conductive polymer nanowire precursor liquid; stir and mix silver nitrate and sodium nitrate at room temperature to prepare a mixed aqueous solution with a molar concentration of silver nitrate of 3mmol / L and a molar concentration of sodium nitrate of 0.2mol / L, and then press 2g Add polyvinylpyrrolidone at / L mass concentration to form a nano-silver precursor liquid; transfer the conductive polymer nanowire precursor liquid to an electrochemical cell, use a stainless steel sheet as a working electrode, a copper sheet as a counter electrode, and a saturated calomel electrode as a reference electrode Form a three-electrode system, constant current method: 0.6mA, th...

Embodiment 2

[0032] Aniline is stirred and dissolved at room temperature in 0.2mol / L, pH is 6.8 in the phosphate buffer solution of 6.8 to form the mixed solution of 0.3mol / L, then add naphthalenesulfonic acid by 20mmol / L to form the precursor liquid of conductive polymer nanowire; silver sulfate Stir and mix with sodium nitrate at room temperature, prepare silver sulfate molar concentration as 6mmol / L, sodium nitrate molar concentration as the mixed aqueous solution of 0.2mol / L, then add polyvinylpyrrolidone by 2g / L mass concentration to form nano-silver precursor liquid; The precursor fluid of the nanowire was transferred to the electrochemical cell, with the stainless steel sheet as the working electrode, the copper sheet as the counter electrode, and the saturated calomel electrode as the reference electrode to form a three-electrode system. Constant voltage method: 1.0V, the polymer formed after 15min The aniline nanowires were centrifuged and washed three times with water; the obtaine...

Embodiment 3

[0034] Stir and dissolve pyrrole at room temperature in a 0.6mol / L, pH 8.0 phosphate buffer solution to form a 0.1mol / L mixed solution, then add camphorsulfonic acid at a molar concentration of 10mmol / L to form a conductive polymer nanowire precursor liquid Stir and mix silver nitrate and sodium nitrate at room temperature, prepare silver nitrate and sodium nitrate mixed aqueous solution with molar concentration of 3mmol / L and 0.6mol / L respectively, then add chitosan to form nano-silver precursor body liquid by 5g / L mass concentration; Transfer the conductive polymer nanowire precursor liquid to the electrochemical cell, use the titanium sheet as the working electrode, the copper sheet as the counter electrode, and the saturated calomel electrode as the reference electrode to form a three-electrode system. Constant current method: 0.6mA after 10min The formed polypyrrole nanowires were centrifuged and washed three times with water; after the obtained polypyrrole nanowires were ...

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Abstract

The invention relates to the technical field of flexible electronic materials, the invention specifically discloses a preparation method of core-shell silver nanowires based on a conductive polymer. The method comprises the following steps of preparing a conductive polymer nanowire and depositing a nano silver shell layer on the surface of the conductive polymer nanowire; the preparation method comprises the following steps that firstly, a conductive polymer nanowire precursor body fluid and a nano-silver precursor body fluid are prepared, and an electrochemical polymerization method is adopted to induce the reaction of monomers in the conductive polymer nanowire precursor body fluid to be converted into conductive polymer nanowires; in the nano-silver precursor body fluid, nano-silver isdeposited on the conductive polymer nanowires through an electrochemical reduction method, finally, the core-shell silver nanowires are formed. According to the method, due to the fact that the cost of the conductive polymer is very low, the silver quantity required by the core-shell silver nanowires is much lower than that of traditional silver nanowires, and a low-cost flexible transparent electrode can be obtained.

Description

technical field [0001] The invention relates to the technical field of flexible electronic materials, in particular to a method for preparing conductive polymer-based core-shell silver nanowires. Background technique [0002] When using traditional methods to prepare flexible transparent electrodes with silver nanowires, the biggest problem is that silver, as a noble metal, has high cost itself, and the cost of materials required to form a unit of silver nanowires is even higher, which limits the application of flexible transparent electrodes in flexible electronics. Large area application. [0003] According to a report by IDTechEx, the market sales of flexible electronic devices will be close to 50 billion US dollars in 2021. In 2017 alone, NanoMarket predicts that only high-end applications will require more than 500 million square meters of flexible transparent electrodes, with a market value of $7.6 billion and an annual growth rate of 45%. It can be seen that the mar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00C25D3/46C25D7/00B82Y30/00B82Y40/00
CPCC25D3/46C25D7/006B82Y30/00B82Y40/00B22F1/0547B22F1/07
Inventor 廖景文龙兴栾陆晓哲杨明瑾彭海炎袁海
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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