Compressive graphene hydrogel and preparation method therefor

Patent metadata

Field	Value
Publication number	US-10115497-B2
Application number	US-201515521305-A
Country	US
Kind code	B2
Filing date	Jan 21, 2015
Priority date	Oct 22, 2014
Publication date	Oct 30, 2018
Grant date	Oct 30, 2018

Abstract

This present invention disclosed a compressive graphene hydrogel and relates to a preparation method thereof. The compressive graphene hydrogel is obtained using the oxidized graphene and phytic acid as raw materials, wherein the oxidized graphene is used as the precursor. The obtained graphene hydrogel has a rich micro gap structure, a super large surface area, and high conductivity.

First claim

What is claimed is:

1. A process of preparing a compressive graphene hydrogel by using a hydrothermal method, the process comprising:
using oxidized graphene as precursor;
adding water into said oxidized graphene to make an aqueous solution;
placing said aqueous solution in a reactor, lining,
doping said aqueous solution with phytic acid, and carrying out a reaction after mixing;
freeze-drying the reaction product to get said compressive graphene hydrogel.

2. The process of claim 1 , wherein the oxidized graphene in said aqueous solution is at a concentration of 1-4 mg/mL.

3. The process of claim 1 , wherein the aqueous solution after being doped has 1-10 mL of phytic acid for every 60 mL of the aqueous solution.

4. The process of claim 1 , wherein the reaction is carried out at temperature of 120-180° C. for 12-24 hours.

Assignees

• Univ Fuzhou

Inventors

• Zheng Yuying
• Liu Xianbin
• Lin Jinxian

Classifications

• C01B2204/22

  Electronic properties · CPC title

• C01B32/184

  Preparation · CPC title

• H01B1/24 Primary

  the conductive material comprising carbon-silicon compounds, carbon or silicon · CPC title

• C01B2204/26

  Mechanical properties · CPC title