• 专利标题:   Use of chiral compound, which crystallizes in Space Group 198 (P213), as catalyst for electrochemical reaction, used in electrode for hydrogen evolution reaction or oxygen evolution reaction cell.
  • 专利号:   EP3828972-A1
  • 发明人:   LI G, MANNA K, SUN Y, FELSER C
  • 专利权人:   MAX PLANCK GES FOERDERUNG WISSENSCHAFTEN
  • 国际专利分类:   B01J023/54, B01J023/62, C01B003/00, H01M004/90, H01M004/92
  • 专利详细信息:   EP3828972-A1 02 Jun 2021 H01M-004/90 202149 Pages: 12 English
  • 申请详细信息:   EP3828972-A1 EP211719 27 Nov 2019
  • 优先权号:   EP211719

▎ 摘  要

NOVELTY - Use of chiral compound (I) or (II), which crystallizes in Space Group 198 (P213), is claimed as a catalyst for an electrochemical reaction. USE - A chiral compound for use as catalyst for electrochemical reaction, used in electrode for hydrogen evolution reaction (HER) or oxygen evolution reaction (OER) cell and a fuel cell (all claimed). ADVANTAGE - The improved catalysts comprising the chiral compound have a reduced amount of, preferably with no noble metals, such as platinum, palladium, or iridium. The catalysts show remarkable performance as catalysts, with low overpotentials, and high electrochemical stability over time. The catalysts have a larger intrinsic catalytic ability than pure platinum at the same overpotential. The chiral compounds exhibit high chemical stability and durability to allow for a stable and extended lifetime for water splitting reactions and fuel cells, so that they can produce hydrogen and power continuously in industrial applications. DETAILED DESCRIPTION - Use of chiral compound of formulae AT (I) or AT1T2 (II), which crystallizes in Space Group 198 (P213), is claimed as a catalyst for an electrochemical reaction. A=transition metal of IUPAC group 7, 8, 9, 10, or 11; T1=element of IUPAC group 2, 13, 14, or 15; and T2=element of IUPAC group 13, 14, 15, or 16. INDEPENDENT CLAIMS are included for: (1) electrode for hydrogen evolution reaction (HER) or oxygen evolution reaction (OER) cell comprising the chiral compound (I) or (II); and (2) manufacture of the chiral compound which involves preparing polycrystalline ingot from stoichiometric mixture of high purity elements of A and T1, or A, T1, and T2 using arc melt technique, crushing obtained ingot to obtain a powder, heating to 1100-1600 degrees C, and cooling to room temperature at a rate of 1-5 degrees C/hour.