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A nitrogen-doped Monk Fruit residue-based c/sno 2 Composite materials and their preparation and application

A composite material, Luo Han Guo technology, applied in structural parts, electrical components, battery electrodes, etc., can solve problems such as irreversible sulfation

Active Publication Date: 2021-10-29
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
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  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention: to prepare a composite material that can solve the irreversible sulfation phenomenon caused by the lead-carbon battery running under the high-rate charging working state, and can solve the hydrogen evolution phenomenon caused by the addition of carbon materials in the lead-carbon battery- -----Nitrogen-doped Luo Han Guo residue-based C / SnO 2 composite material

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  • A nitrogen-doped Monk Fruit residue-based c/sno <sub>2</sub> Composite materials and their preparation and application
  • A nitrogen-doped Monk Fruit residue-based c/sno <sub>2</sub> Composite materials and their preparation and application
  • A nitrogen-doped Monk Fruit residue-based c/sno <sub>2</sub> Composite materials and their preparation and application

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Embodiment Construction

[0024] The present invention is further described below.

[0025] 1. Pretreatment method of Luo Han Guo residue: put the Luo Han Guo residue in a container containing 5 wt.% K 2 CO 3 In the beaker of the solution, control the mass of Luo Han Guo residue: 5 wt.%K 2 CO 3 Solution quality = 1:150, soak in a constant temperature oil bath at 60 °C for 24 h, remove, wash with distilled water for several times until neutral; put the residue of Luo Han Guo washed to neutral in a 65 °C blast drying oven Air-dry for 12 h; put the dried Luo Han Guo residue into a sealed grinder for grinding, and grind it into a powder of 200-300 meshes to obtain the pretreated Luo Han Guo residue powder, which is sealed and stored.

[0026] 2. Preparation method of Luo Han Guo residue-based carbon material: Weigh 10 g of Luo Han Guo residue powder into an alumina crucible, place it in a vacuum tube furnace, and pre-carbonize it by calcining in an argon atmosphere at 650 °C for 3 h. Control the argon ...

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Abstract

The invention discloses a nitrogen-doped Luo Han Guo residue-based C / SnO 2 The composite material is characterized in that the nitrogen-doped Monk Fruit residue-based carbon material is used as a carrier. At the same time, the invention also discloses the nitrogen-doped Luo Han Guo residue-based C / SnO 2 Methods of preparation of composite materials. The nitrogen-doped Luo Han Guo residue-based C / SnO 2 The composite material has dual functions of good electrochemical performance and hydrogen evolution inhibition performance, which can not only solve the phenomenon of irreversible sulfation caused by the operation of lead-carbon batteries in high-rate charging working conditions, but also solve the problem of lead-carbon batteries due to the addition of carbon materials. the hydrogen evolution phenomenon.

Description

technical field [0001] The invention belongs to the technical field of preparation of negative electrode materials for lead-carbon batteries, and mainly relates to a nitrogen-doped Luo Han Guo residue-based C / SnO 2 Composite materials and their preparation and application. Background technique [0002] Lead-carbon battery not only retains the advantages of safety and reliability, high recovery rate and low price of lead-acid battery, but also has the dual functions of lead-acid battery and super capacitor, and has excellent cycle life and high power density in HRPSoC state , Adding porous carbon materials to the negative plate, the carbon additive buffers the current and provides a conductive network for the lead-carbon battery, thereby improving the electrochemical behavior of the battery and prolonging the cycle life of the negative plate in a high-rate partial charge state. [0003] There are endless carbon materials on the market. The carbon materials added to the negat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/36H01M4/62H01M10/06
CPCH01M4/362H01M4/62H01M4/625H01M4/628H01M10/06Y02E60/10
Inventor 刘峥艾慧婷孙丹冯炜怡梁秋群
Owner GUILIN UNIVERSITY OF TECHNOLOGY