Abstract: The present invention discloses a method for preparing a fiber with spatial structure, and the fiber prepared thereby and its use as well. In this method, the fiber is prepared through a wet spinning process, wherein a spinning solution prepared from low molecular weight polysaccharide based polyelectrolyte optionally with inert conductive material distributed therein, is injected through a syringe into a coagulation bath, which is formed by adding high molecular weight polysaccharide based polyelectrolyte into a coagulation tank. This method has the advantages such as simple equipment, low cost, good spinnability, and is applicable for large-scale production. The prepared fiber with spatial structure, especially the hollow multilayered fiber, has the controllable layers, cavities, and diameter, a high tensile strength, and an ultra-high specific surface area.

Abstract: The present invention discloses a method for preparing a fiber with spatial structure, and the fiber prepared thereby and its use as well. In this method, the fiber is prepared through a wet spinning process, wherein a spinning solution prepared from low molecular weight polysaccharide based polyelectrolyte optionally with inert conductive material distributed therein, is injected through a syringe into a coagulation bath, which is formed by adding high molecular weight polysaccharide based polyelectrolyte into a coagulation tank. This method has the advantages such as simple equipment, low cost, good spinnability, and is applicable for large-scale production. The prepared fiber with spatial structure, especially the hollow multilayered fiber, has the controllable layers, cavities, and diameter, a high tensile strength, and an ultra-high specific surface area.