Silicagel til energilagringsindustrien

Can silica sol-gel be used as a insulator?

Batteries, fuel cells and solar cells, among many other high-current-density devices, could benefit from the precise meso- to macroscopic structure control afforded by the silica sol–gel process. The porous materials made by silica sol–gel chemistry are typically insulators, however, which has restricted their application.

Could a silica sol-gel process be used for high-current-density devices?

Nature Materials 11, 460–467 (2012) Cite this article Batteries, fuel cells and solar cells, among many other high-current-density devices, could benefit from the precise meso- to macroscopic structure control afforded by the silica sol–gel process.

Why is silica sol-gel chemistry important?

There is widespread recognition that the use of energy in the twenty-first century must be sustainable. Because of its extraordinary flexibility, silica sol–gel chemistry offers the opportunity to create the novel materials and architectures which can lead to significant advances in renewable energy and energy storage technologies.

Can silica gel be used as energy storage medium?

Ayisi et al. designed a small energy-storage system using silica gel as an energy-storage medium and conducted short-period repeated tests. Low-grade heat of 70°C was used for regeneration during the desorption phase of each cycle.

What is a precursor for silica gels?

For silica gels, a first important precursor is sodium metasilicate Na 2 SiO 3, also termed waterglass [16, 17], which was previously used by Kistler to produce the first silica aerogels reported in the literature . This precursor reacts with an acid such as HCl according to the reactions of the type shown in (Eq. 13.1) below.

Why is silica gel a good adsorbent?

Although the thermal conductivity of silica gel and its composites is relatively poor , it has the advantages of high porosity, suitable regeneration temperature, low cost, and strong water adsorption capacity. Therefore, silica gel is competitive with other adsorbents such as zeolites, alumina, and metal organic materials .