A preparation method for constructing a rod-shaped NiCo2S4 / NC catalyst based on escherichia coli

By utilizing Escherichia coli as a carbon carrier, NiCo2S4 nanoparticles were electrostatically adsorbed and hydrothermally grown, solving the problems of poor conductivity and easy aggregation of electrocatalysts. This enabled the preparation of efficient and low-cost electrocatalysts suitable for water electrolysis catalysis.

CN116770348BActive Publication Date: 2026-07-03YANSHAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
YANSHAN UNIV
Filing Date
2023-07-24
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing electrocatalyst materials suffer from poor conductivity and easy agglomeration. Furthermore, traditional carbon materials are expensive and complex to prepare, which limits their application in water electrolysis catalysis.

Method used

Using Escherichia coli as a natural nitrogen-containing carbon carrier, metal ions are adsorbed through electrostatic interaction, and NiCo2S4 nanoparticles are grown in situ in a hydrothermal reaction to achieve uniform dispersion and avoid agglomeration, thus preparing a rod-shaped NiCo2S4/NC catalyst.

Benefits of technology

Small-sized, uniformly dispersed NiCo2S4 nanoparticles were obtained, which improved the electrocatalytic performance, reduced the preparation cost, and the method is environmentally friendly and simple, making it suitable for large-scale production.

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Abstract

The application discloses a preparation method of a rod-shaped NiCo2S4 / NC catalyst based on escherichia coli, which utilizes escherichia coli as a natural nitrogen-containing carbon carrier (NC), and in-situ grows active material NiCo2S4 on the carrier through a hydrothermal method, realizes uniform dispersion of the NiCo2S4, prevents agglomeration of the NiCo2S4, and finally obtains small-size NiCo2S4 nanoparticles uniformly arranged on the natural surface nitrogen-containing carbon carrier (NC) converted by the escherichia coli. The preparation method is simple, the process is controllable, the period is short, the method is green and environment-friendly, and the obtained catalyst has good electrochemical performance.
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