CN Patent

CN104766952B — 利用生物质气化炉滤渣制备锂离子电池负极材料的方法

Assigned to Wuhan Fengying Yangtze River Ecological Science And Technology Research Institute Co ltd · Expires 2017-01-25 · 9y expired

What this patent protects

本发明公开了一种利用生物质气化炉滤渣制备锂离子电池负极材料的方法,包括:1)将生物质气化炉滤渣与表面活性剂混合后进行研磨,充分研磨后水洗去除表面活性剂后抽滤,滤渣备用;2)向步骤1)所得滤渣中加入盐酸,充分除杂,过滤并将滤渣洗至中性后备用;3)向步骤2)所得滤渣中加入聚乙烯亚胺和乙醇的混合液后进行振荡,充分振荡后洗去聚乙烯亚胺和乙醇,过滤,滤渣备用;4)向步骤3)所得滤渣中加入质量分数为55~70%的硝酸,在35~45℃温度下充分搅拌进行改性,洗去硝酸,过滤后干燥得到锂离子电池负极材料。获得了容量高,首次效率高,循环性能好,安全无污染的锂离子电池负极材料…

USPTO Abstract

本发明公开了一种利用生物质气化炉滤渣制备锂离子电池负极材料的方法,包括:1)将生物质气化炉滤渣与表面活性剂混合后进行研磨,充分研磨后水洗去除表面活性剂后抽滤,滤渣备用;2)向步骤1)所得滤渣中加入盐酸,充分除杂,过滤并将滤渣洗至中性后备用;3)向步骤2)所得滤渣中加入聚乙烯亚胺和乙醇的混合液后进行振荡,充分振荡后洗去聚乙烯亚胺和乙醇,过滤,滤渣备用;4)向步骤3)所得滤渣中加入质量分数为55~70%的硝酸,在35~45℃温度下充分搅拌进行改性,洗去硝酸,过滤后干燥得到锂离子电池负极材料。获得了容量高,首次效率高,循环性能好,安全无污染的锂离子电池负极材料;此工艺流程简单,成本低,能够适应于放大生产。

Drugs covered by this patent

Patent Metadata

Patent number
CN104766952B
Jurisdiction
CN
Classification
Expires
2017-01-25
Drug substance claim
No
Drug product claim
No
Assignee
Wuhan Fengying Yangtze River Ecological Science And Technology Research Institute Co ltd
Source
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Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.

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