• 专利标题:   Electrochemically exfoliated phosphated graphene used as e.g. catalyst, comprises preset amount phosphorus-containing functional group at surface of electrochemically exfoliated phosphated graphene, to improve thermal stability of graphene.
  • 专利号:   CA3059222-A1, US2020127279-A1
  • 发明人:   ROBERTS E P L, SHARIF F, TRIFKOVIC M, BRYANT S
  • 专利权人:   UTI LP, UTI LP
  • 国际专利分类:   C01B032/182, C01B032/19, H01M004/583, C01B032/194, H01M004/133, H01M004/1393, H01M004/62
  • 专利详细信息:   CA3059222-A1 18 Apr 2020 C01B-032/182 202045 Pages: 47 English
  • 申请详细信息:   CA3059222-A1 CA3059222 17 Oct 2019
  • 优先权号:   US747566P, US656586

▎ 摘  要

NOVELTY - An electrochemically exfoliated phosphated (EEP) graphene comprises a phosphorus-containing functional groups at surface of EEP graphene in amount sufficient to improve thermal stability of EEP graphene compared to graphene without the phosphorus-containing functional groups. USE - Electrochemically exfoliated phosphated graphene used as conductor, catalyst and electrocatalyst for electrooxidation, oxygen reduction, hydrogen oxidation, water electrolysis, and electrode reactions for electrode such as anode and cathode (all claimed), used for fuel cell, sensor and batteries. ADVANTAGE - The electrochemically exfoliated phosphated graphene has excellent high-temperature stability in air, high degree catalytic activity for phenol oxidation, high active surface area for oxidation, catalytic efficiency, and electrooxidation resistance. The electrochemically exfoliated phosphated graphene is manufactured with fewer defects, by simple method. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for synthesis of EEP graphene, which involves applying an electrochemical exfoliation current to an exfoliation anode comprising graphite sample in phosphating electrolyte which is inorganic salt solution comprising diammonium phosphate and/or mono-ammonium phosphate.