Iron-nitrogen co-doped carbon and MXene compound as well as preparation method and application thereof

A technology of co-doping and composites, applied in electrical components, battery electrodes, circuits, etc., can solve problems such as poor conductivity and stability, achieve small electrochemical impedance, excellent ORR catalytic activity and stability, and low cost Effect

Active Publication Date: 2021-03-26
ZHANGJIAGANG INST OF IND TECH SOOCHOW UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its poor conductivity and stability have become a stumbling block on its commercialization road

Method used

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  • Iron-nitrogen co-doped carbon and MXene compound as well as preparation method and application thereof
  • Iron-nitrogen co-doped carbon and MXene compound as well as preparation method and application thereof
  • Iron-nitrogen co-doped carbon and MXene compound as well as preparation method and application thereof

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preparation example Construction

[0033] 1. Few layers of Ti 3 C 2 T x Preparation method: Weigh 0.5g Ti 3 AlC 2, uniformly dispersed in 20mL 40% HF solution, stirred at room temperature for 72h. After the reaction, the product was collected by centrifugation, washed repeatedly with deionized water, and centrifuged until the pH of the solution was close to 7. The resulting product was dried under vacuum at 60 °C for 12 h to obtain laminated Ti 3 C 2 T x . Then the obtained black powder was dispersed in deionized water, ultrasonically treated for 12 h, and the product was collected by centrifugation to obtain a few-layer Ti 3 C 2 T x (2-3 floors).

[0034] 2. 6.5g of 2-methylimidazole was dissolved in 80mL of methanol, which was recorded as solution A; 3g of zinc nitrate hexahydrate (Zn(NO 3 ) 2 ·6H 2 O) with 0.4g iron acetylacetonate (Fe(acac) 3 ) was dissolved in 40mL of methanol, recorded as solution B. Solution A and solution B were mixed, stirred at room temperature for 24 h, then suction f...

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Abstract

The invention provides an iron-nitrogen co-doped carbon and MXene compound as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing an iron-doped imidazolinate framework; preparing Fe-N-C; mixing Fe-N-C and Ti3C2Tx, dispersing the mixture into N,N-dimethylformamide, and carrying out ultrasonic treatment; carrying out suction filtration, washing and drying, heating to 300 DEG C and 400 DEG C in a nitrogen atmosphere, and carrying out heat preservation for 0.5 hour to 2 hours so as to obtain the iron-nitrogen co-doped carbon and MXene compound FeNC@Ti3C2Tx. The iron-nitrogen co-doped carbon and MXene compound prepared by the preparation method can effectively catalyze an oxygen reduction reaction.

Description

technical field [0001] The invention relates to a method for preparing a composite material, in particular to a method for preparing a composite of iron-nitrogen co-doped carbon and MXene, and belongs to the technical field of composite material preparation. Background technique [0002] With the rapid development of human civilization and industry, environmental pollution and energy crisis are becoming more and more serious. It is imperative to develop efficient and clean new energy sources. Fuel cells and metal-air batteries have attracted extensive attention due to their cleanliness and high energy density. Oxygen reduction reaction (ORR), as one of the most important half-reactions in these batteries, directly determines the performance of these devices. However, due to its slow kinetics, the oxygen reduction reaction often has a high overpotential. Therefore, it is particularly important to develop efficient catalysts to promote the reaction process. [0003] In rec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M4/90H01M4/88
CPCH01M4/8652H01M4/90H01M4/8878Y02E60/50
Inventor 田景华王文涛杨瑞枝
Owner ZHANGJIAGANG INST OF IND TECH SOOCHOW UNIV
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