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FePt@C composite nano material prepared on basis of MOF and application thereof

A composite nanomaterial and composite material technology, applied in the field of electrocatalytic fuel cell preparation, can solve problems such as weak electrical conductivity, and achieve the effects of improving electrical conductivity, improving catalytic stability, and weakening adsorption energy

Active Publication Date: 2021-02-23
FUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, MOFs are less conductive and are rarely used in electrocatalysis.

Method used

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  • FePt@C composite nano material prepared on basis of MOF and application thereof
  • FePt@C composite nano material prepared on basis of MOF and application thereof
  • FePt@C composite nano material prepared on basis of MOF and application thereof

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Experimental program
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Effect test

Embodiment

[0027] (1) Weigh 0.675 g of ferric chloride (2.45 mmol) and 0.206 g of terephthalic acid (1.24 mmol), dissolve them in 15 mL of N,N-dimethylformamide, and sonicate for 15 min to make them completely Dissolve; then transfer the fully dissolved reactant to a 25 mL polytetrafluoroethylene reactor, raise the temperature of the muffle furnace to 110 °C, and react for 20 h; after the autoclave is cooled to room temperature, the reaction product is centrifugally filtered , washed with DMF and absolute ethanol for three times, and finally dried under vacuum at 70° C. overnight to obtain MIL-101(Fe).

[0028] (2) Mix 0.3 g of MIL-101(Fe) prepared in step (1) with 0.0498 g of PVP and 135 mL of absolute ethanol, and add 7.0 mL of 0.016 g / L chloroplatinic acid solution drop by drop , after stirring for 30 min, heated to reflux at 100 °C for 3 h under continuous stirring to synthesize Pt@MIL-101(Fe) composites.

[0029] (3) The Pt@MIL-101(Fe) composite material prepared in step (2) was gr...

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Abstract

The invention discloses a FePt@C composite nano material prepared on the basis of MOF and application thereof to preparation of an electro-catalytic fuel cell. According to the composite nano material, three-dimensional MIL-101 (Fe) is used as a carrier, chloroplatinic acid is reduced into Pt nano particles through heating reflux, the Pt nano particles are encapsulated into a prepared MIL-101 (Fe)cavity, and then the FePt@C composite material is prepared through high-temperature pyrolysis. Pt and Fe form alloy nanoparticles, the synergistic effect between Pt and Fe can promote the change of an electronic structure and enhance the affinity of FePt to HCOOH, surface oxide can be formed under very low potential, the formic acid oxidation performance is obviously higher than that of commercial Pt / C, the preparation method is simple, the problems of poor conductivity of MOF and high cost of a Pt-based catalyst are effectively solved, and a new direction is provided for preparation and electrocatalytic application of other MOF-derived metal carbon materials.

Description

technical field [0001] The invention belongs to the field of electrocatalytic fuel cell preparation, and in particular relates to a FePt@C composite nanomaterial prepared based on MOF, a preparation method thereof, and an application in electrocatalytic formic acid oxidation. Background technique [0002] In recent years, the issue of energy and development has become the focus of attention of all countries. Due to the current situation of my country's energy consumption structure, the extensive use of fossil fuels has caused a series of environmental problems. In response to the concept of green development, there is an urgent need to develop renewable, safe, clean, efficient and sustainable energy sources and related energy storage technologies. Environmentally friendly and efficient electrochemical redox technologies have attracted much attention. Among them, direct formic acid or methanol fuel cells have high conversion efficiency, good safety performance, and zero poll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/92H01M4/86B82Y40/00B82Y30/00
CPCH01M4/921H01M4/926H01M4/8663B82Y30/00B82Y40/00Y02E60/50
Inventor 汤儆李茜蔡娇锋
Owner FUZHOU UNIV
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