Iron-nitrogen doped core-shell carbon sphere material and preparation method thereof

An iron-doped, core-shell technology, applied in nanotechnology for materials and surface science, electrical components, battery electrodes, etc., can solve problems such as porous structure collapse, limit material transport, reduce surface area, etc., to promote graphitization degree, high ORR activity, enhanced conductivity and stability
CN112331868AInactive Publication Date: 2021-02-05WUYI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUYI UNIV
Publication Date
2021-02-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an iron-nitrogen doped core-shell carbon sphere material and a preparation method thereof, and relates to the technical field of core-shell materials. The preparation method ofthe iron-nitrogen doped core-shell carbon sphere material comprises the following steps: (1) preparing polydopamine spheres; (2) preparing an iron-doped metal organic framework coated polydopamine sphere compound; and (3) preparing the iron-nitrogen doped core-shell carbon sphere material. Compared with a Pt / C catalyst sold in the market, the iron-nitrogen doped core-shell carbon sphere materialprepared by the method provided by the invention shows higher ORR activity.
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Description

technical field

[0001] The invention relates to the technical field of core-shell materials, in particular to an iron-nitrogen-doped core-shell carbon sphere material and a preparation method thereof. Background technique

[0002] Oxygen reduction reaction (ORR) is one of the most important cathode reactions for clean and efficient energy storage and conversion devices such as proton exchange membrane fuel cells, microbial fuel cells, and metal-air batteries. However, the slow kinetics severely impact the overall performance of these devices. To speed up the kinetics, highly efficient cathode catalysts should be provided. So far, platinum (Pt)-based catalysts are considered to be the most active ORR electrocatalysts. However, high cost, poor durability, and poor tolerance to fuel molecules (methanol, ethanol...) hinder their development and widespread application. Therefore, in order to achieve the goal of practical application, scholars have focused on the research of ch...

Claims

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