• 专利标题:   Preparation of cobalt-iron-carbon/reduced graphene oxide electromagnetic wave absorption composite material by dissolving graphene oxide in deionized water, adding citrate and cobalt salt, dissolving, and pouring ferricyanide solution.
  • 专利号:   CN114032067-A
  • 发明人:   GAO H, SHI Z, WEI S, CHEN S
  • 专利权人:   UNIV CHINA OCEAN
  • 国际专利分类:   C01B032/15, C01B032/19, C09K003/00, H05K009/00
  • 专利详细信息:   CN114032067-A 11 Feb 2022 C09K-003/00 202251 Chinese
  • 申请详细信息:   CN114032067-A CN11463741 03 Dec 2021
  • 优先权号:   CN11463741

▎ 摘  要

NOVELTY - Preparation of cobalt-iron-carbon/reduced graphene oxide electromagnetic wave absorption composite material comprises dissolving graphene oxide in deionized water to obtain solution A, adding citrate and cobalt salt, and dissolving; adding ferricyanide to deionized water, dissolving, slowly pouring to first solution, stirring, standing in water bath, and annealing. USE - The method is for preparation of cobalt-iron-carbon/reduced graphene oxide electromagnetic wave absorption composite material. ADVANTAGE - The composite material has improved electromagnetic wave absorption performance, improved dielectric loss, conductive losses and attenuation capabilities, excellent electromagnetic wave absorption properties with only a small amount of graphene oxide, and minimum reflection loss that can reach 53.0 dB when the matching thickness is 2.4 mm. The method is simple and environment-friendly, and adjusts the dielectric constant by changing the content of graphene oxide. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a cobalt-iron-carbon/reduced graphene oxide electromagnetic wave absorption composite material comprising cobalt-iron alloy as the core, and reduced graphene supported with carbon-shelled core-shell structure cobalt-iron-carbon.