一种双功能辅助制备晶态碳纳米片及其制备方法与应用

By employing microwave-assisted preparation and low-temperature carbonization technology, the high energy consumption problem of high-temperature carbonization was solved, and crystalline carbon nanosheets suitable for sodium-ion batteries were prepared. These nanosheets possess graphite microcrystals and defect structures, thereby improving preparation efficiency and material properties.

CN118561266BActive Publication Date: 2026-07-17TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Filing Date
2024-05-15
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies require high-temperature carbonization to prepare crystalline carbon nanosheets, resulting in high energy consumption, high cost, and low yield, making it difficult to achieve large-scale production.

Method used

A microwave-assisted preparation method was used to prepare crystalline carbon nanosheets with graphite microcrystals and defects by utilizing the complexation of transition metal ions with oxygen-containing functional groups and the hydrogen bonding of graphene oxide, combined with a low-temperature carbonization process.

Benefits of technology

The preparation of crystalline carbon nanosheets with low energy consumption and low cost has been achieved. The material has a short ion diffusion path and a fast electron transport channel, making it suitable for sodium-ion battery anode materials.

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Abstract

本申请公开了一种双功能辅助制备晶态碳纳米片及其制备方法与应用,属于石墨碳材料技术领域,包括以下步骤:S1.将水溶性有机物、过渡金属盐和氧化石墨烯按比例放入到盛有去离子水的容器中,混合均匀后放置到微波反应器中,反应结束后,将反应物冷冻干燥,随后在管式定碳炉中碳化,升温到700~850℃,碳化保温后,自然冷却;S2.将碳化后的粉末经盐酸和去离子水反复洗涤去除金属元素后,干燥,即得所述晶态碳纳米片。本申请采用上述的一种双功能辅助制备晶态碳纳米片及其制备方法与应用,该方法操作简单、能耗低、设备简单且易于放大,经该方法制得的晶态碳纳米片同时具有石墨微晶和缺陷,能够提供较短的离子扩散路径和快速的电子传输通道。
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