Method for preparing high orientation graphene aerogel

A graphene airgel and high-orientation technology, which is applied to ceramic products, other household utensils, household utensils, etc., can solve the problems of lack of graphene dispersion system pretreatment and pre-orientation, poor product structure order, etc., and achieve good The effects of elasticity, ease of handling, and excellent thermal and electrical conductivity
CN106044752AActive Publication Date: 2016-10-26SPECIAL EQUIP SAFETY SUPERVISION INSPECTION INST OF JIANGSU PROVINCE
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SPECIAL EQUIP SAFETY SUPERVISION INSPECTION INST OF JIANGSU PROVINCE
Publication Date
2016-10-26

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Abstract

The invention discloses a high orientation graphene aerogel and a preparation method thereof. The method comprises the steps of first preparing a dispersion liquid of graphene or graphene oxide, placing the dispersion liquid of graphene or graphene oxide in a container with an electrode, obtaining a high orientation graphene or graphene oxide dispersion liquid through an additional electric field orientation method, continuing to maintain an electric field effect, performing freeze freezing in liquid nitrogen, and obtaining the high orientation graphene aerogel after freeze drying or supercritical drying. The high orientation graphene aerogel is high in porosity, pores have a very high degree of orientation in an electric field direction, the pore size is controllable, and the high orientation graphene aerogel can be used for electrode materials of batteries and super capacitors, electron field emission sources, heat insulating and radiating materials, adsorbing materials, high flux water filter materials and catalyst carriers and the like.
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Description

technical field

[0001] The invention relates to the field of preparation of graphene airgel, in particular to a preparation method of highly oriented graphene airgel. Background technique

[0002] Graphene is a two-dimensional crystal of a single molecular layer, which has the highest strength and excellent electrical and thermal conductivity of known materials. It is currently the most ideal two-dimensional nanomaterial. The field has broad application prospects. In 2010, two professors of the University of Manchester, Andre Geim and Konstantin Novoselov, won the Nobel Prize in Physics for the first successful separation of stable graphene, setting off a wave of research on graphene around the world. Macroscopic graphene airgel is one of the main application forms of nanoscale graphene. Because of its large specific surface area, good chemical stability, and good electrical and thermal conductivity, graphene aerogels can be used as electrode materials for batteries and su...

Claims

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