• 专利标题:   Air electrode catalyst for metal-air secondary batteries, comprises transition metal nitride nano-sheet which is carry/supported on the nitrogen addition graphene nano-sheet, and prepared by peeling transition-metal hydroxide layer.
  • 专利号:   JP2018067494-A
  • 发明人:   ISHIHARA T
  • 专利权人:   UNIV KYUSHU
  • 国际专利分类:   H01M012/08, B01J027/24, B01J035/02, B01J037/04, H01M004/86, H01M004/88, H01M004/90
  • 专利详细信息:   JP2018067494-A 26 Apr 2018 H01M-012/08 201830 Pages: 16 Japanese
  • 申请详细信息:   JP2018067494-A JP206510 21 Oct 2016
  • 优先权号:   JP206510

▎ 摘  要

NOVELTY - Air electrode catalyst comprises transition metal nitride nano-sheet which is carry/supported on the nitrogen addition graphene nano-sheet. USE - Air electrode catalyst for metal-air secondary batteries, catalyzing both reaction of oxygen generation and oxygen reduction (claimed). ADVANTAGE - The air electrode catalyst reduces the energy efficiency. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) a rechargeable and dischargeable metal-air secondary battery, which comprises air electrode as positive electrode; and (2) a method for preparing air electrode catalyst, which involves peeling transition-metal hydroxide layer from layered double hydroxide, where transition metal is selected from iron, cobalt, and nickel, and thickness of transition-metal hydroxide nanosheet is thinner than 10 nanometer; (3) mixing transition-metal hydroxide nanosheet and graphene oxide; (4) heating mixture in ammonia gas and nitriding simultaneously both transition metal and graphene oxide; and (5) collecting/recovering transition metal nitride nanosheets which is carry/supported on nitrogen addition graphene nanosheet.