Issue 18, 2019, Issue in Progress

Step-freeze-drying method for carbon aerogels: a study of the effects on microstructure and mechanical property

Abstract

In this paper, a novel step-freeze-drying method was used to prepare carbon aerogels. The effects of step-freeze-drying on the density, linear shrinkage, specific surface area, pore size distribution, microstructure and compressive strength of carbon aerogels were investigated, and compared to traditional freeze-drying methods. It was found that the step-freeze-drying method reduced the density, linear shrinkage and pore size of carbon aerogels compared to traditional freeze-drying. And it also improved the specific surface area, the microstructural homogenization and the compressive strength of carbon aerogels compared to traditional freeze-drying. It is therefore believed that step-freeze-drying is an efficient method to obtain carbon aerogels with fine microstructure and high mechanical property.

Graphical abstract: Step-freeze-drying method for carbon aerogels: a study of the effects on microstructure and mechanical property

Article information

Article type
Paper
Submitted
21 Feb 2019
Accepted
25 Mar 2019
First published
29 Mar 2019
This article is Open Access
Creative Commons BY license

RSC Adv., 2019,9, 9931-9936

Step-freeze-drying method for carbon aerogels: a study of the effects on microstructure and mechanical property

L. Hu, R. He, Z. Lu, K. Zhang and X. Bai, RSC Adv., 2019, 9, 9931 DOI: 10.1039/C9RA01328H

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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