C / MoS2-FeMo2S4-MoC composite material and application thereof in lithium air battery
By coating the iron salt dopamine on the surface of C/MoS2 and forming C/MoS2-FeMo2S4-MoC composite, the problem of slow kinetics of the cathode catalyst material of lithium air battery in oxygen reduction and oxygen evolution reaction is solved, and the cycle stability and overvoltage maintenance ability of the battery are significantly improved.
CN119725570AActive Publication Date: 2025-03-28HEFEI UNIV OF TECH
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Patent Information
- Application Number
- CN202411923271.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2044-12-25
AI Technical Summary
Technical Problem
The existing lithium air battery positive electrode catalyst materials have slow kinetics in oxygen reduction reaction and oxygen evolution reaction, resulting in large overpotentials, poor cycle stability and low cycle efficiency.
Method used
The C/MoS2-FeMo2S4-MoC composite material is used as a catalyst to coat the iron salt dopamine on the surface of C/MoS2 and calcinate at high temperature to form the composite material to improve the conductivity and catalytic performance of the catalyst.
Benefits of technology
The composite material exhibits excellent oxygen reduction and oxygen evolution electrocatalytic activity in lithium air batteries, improving the specific capacity, cycle stability and overvoltage maintenance capabilities of the battery.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a C / MoS2-FeMo2S4-MoC composite material and an application thereof in a lithium air battery, a preparation method of the composite material comprises the following steps: dissolving molybdenum salt, thiourea and glucose in deionized water, preparing a C / MoS2 material through a hydrothermal method, then coating the surface of the C / MoS2 material with dopamine, adsorbing iron salt on the surface of the dopamine, drying to obtain a C / MoS2-coated Fe-PDA precursor, and preparing the C / MoS2-FeMo2S4-MoC composite material. And carrying out high-temperature calcination under the protection of argon, so as to obtain the C / MoS2-FeMo2S4-MoC composite material. The preparation process is simple, the cost is low, and the obtained composite material has relatively low overvoltage, high specific discharge capacity and excellent cycle performance when being used as a positive electrode catalyst of a lithium air battery, and has a relatively good research prospect.
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