一种含硅复合材料及其制备方法与应用

卢周广; 吕富聪; 孙志方; 王文浠

卢周广

南方科技大学

南方科技大学

518055 广东省深圳市南山区西丽学苑大道1088号

南方科技大学

518055 广东省深圳市南山区西丽学苑大道1088号 (广东,深圳,南山区)

南方科技大学

518055 广东省深圳市南山区西丽学苑大道1088号 (广东,深圳,南山区)

CN201610985766.9

2016-11-09

CN106531992B

2019-08-20

2019-08-20

授权

2019-08-20

授权发明

第一

本发明属于电池含硅负极材料领域，公开了一种含硅复合材料及其制备方法与应用。该含硅复合材料包括硅粒子、植酸、氧化石墨烯和碳纳米管，所述硅粒子表面包覆植酸形成硅‑植酸颗粒，硅‑植酸颗粒与氧化石墨烯和碳纳米管交联形成3D网络结构。制备方法主要采用球磨和冷冻干燥工艺。本发明的含硅复合材料可以用于锂离子电池或钠离子电池，充放电容量高，循环稳定性好，具有可书写、可印刷特性，在储能领域有非常好的应用前景。本发明的含硅复合材料生产成本低，制备方法快速、简单可行。

The invention belongs to the field of a silicon-containing negative electrode material of a battery, and discloses a silicon-containing composite material and a preparation method and an application thereof. The silicon-containing composite material comprises silicon particles, phytic acid, graphene oxide and carbon nanotubes, wherein the surfaces of the silicon particles are coated with the phytic acid to form silicon-phytic acid particles; and the silicon-phytic acid particles, and the graphene oxide and carbon nanotubes are crosslinked to form a 3D network structure. The preparation method mainly adopts ball milling and freezing and drying processes. The silicon-containing composite material provided by the invention can be used for a lithium ion battery or a sodium ion battery, is high in charge-discharge capacity and cycling stability, has readable and writable, and printable features, and has quite high application prospect in the energy storage field; and in addition, the silicon-containing composite material provided by the invention has low production cost, rapid preparation method, and simplicity and feasibility.

H01M4/362 ; H01M4/386 ; H01M4/583 ; H01M10/0525 ; H01M10/054 ; Y02E60/10

H01M4/36 ; H01M4/38 ; H01M4/583 ; H01M10/0525 ; H01M10/054

（+PATENT GRANT）[2019-08-20][CN]

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1

李先林

广州嘉权专利商标事务所有限公司

PatSnap

卢周广,吕富聪,孙志方,等. 一种含硅复合材料及其制备方法与应用[P]. 2019-08-20.