Carbon carrier material capable of relieving growth of sodium dendrites and rich in micropore and closed pore structures as well as preparation method and application of carbon carrier material

Abstract

The invention discloses a carbon carrier material capable of relieving growth of sodium dendrites and rich in micropore and closed pore structures as well as a preparation method and application of the carbon carrier material, and belongs to the technical field of low-dimensional material energy storage devices. The preparation method comprises the following steps: SO1, carrying out cross-linking reaction on a phenol source, a cross-linking catalyst and a formaldehyde solution; carrying out high-temperature carbonization reaction to obtain a sample containing impurities; and SO3, adding an impurity-containing sample into a solvent, soaking, carrying out suction filtration, washing, and drying to obtain the product. The carbon carrier material prepared by the method is uniform in distribution, the selection of pores and the pore diameter are adjustable, rich sodium-philic sites can be effectively provided for inducing uniform deposition of sodium, and dendritic crystal growth of a sodium metal battery in the circulation process is inhibited; the hole is used as a three-dimensional Na < + > transmission channel, so that a good ion migration path is favorably formed, the local current density of the material is reduced, the possibility of forming dendritic crystals is reduced, the safety of an energy storage device is improved, and the service life of the energy storage device is prolonged.