• 专利标题:   Synthesizing alpha-iron oxyhydroxide doped three-dimensional graphene foam quadrangular prism material by dissolving ferric nitrate in deionized water, adding urea, adding nitric acid adding three-dimensional graphene, heating, and cooling.
  • 专利号:   CN112897591-A
  • 发明人:   WANG X, LI D, LI J, JIN X, ZHAO C
  • 专利权人:   UNIV HARBIN SCI TECHNOLOGY
  • 国际专利分类:   B82Y030/00, B82Y040/00, C01B032/21, C01G049/02, H01M010/054, H01M004/52, H01M004/62
  • 专利详细信息:   CN112897591-A 04 Jun 2021 C01G-049/02 202160 Pages: 6 Chinese
  • 申请详细信息:   CN112897591-A CN10084328 21 Jan 2021
  • 优先权号:   CN10084328

▎ 摘  要

NOVELTY - Method for synthesizing alpha -iron oxyhydroxide doped three-dimensional graphene foam quadrangular prism material, involves (a) dissolving ferric nitrate in deionized water, evenly stirring, adding urea to the solution, continuously stirring, and adding concentrated nitric acid to obtain a mixed solution (A), and (b) measuring the mixed solution (A), transferring to a stainless steel autoclave lined with PTFE, adding three-dimensional graphene, heating the stainless steel autoclave to the set temperature, heat-preserving at a heating rate of 10 degrees C.minute-1, setting the reaction time, cooling the reaction vessel to room temperature to obtain a product (B), washing the product (B) three times with water and ethanol, drying the product (B) in a vacuum oven, and washing to obtain a rod-shaped alpha -iron oxyhydroxide doped three-dimensional graphene foam quadrangular prism material. USE - The method is useful for synthesizing alpha -iron oxyhydroxide doped three-dimensional graphene foam quadrangular prism material used in battery negative electrode material (all claimed). ADVANTAGE - The method ensures to maintain excellent microstructure, and effectively alleviates the volume expansion problem caused by sodium ions during insertion and extraction, and improves the cycle stability of the electrode.