公开(公告)号：US20250122631A1

公开(公告)日：2025-04-17

申请号：US18567599

申请日：2022-05-25

Applicant: MONASH UNIVERSITY

Inventor： Douglas R. MACFARLANE ,  Alexandr Nikolaevich SIMONOV ,  Hoang-Long DU

IPC: C25B1/27 ,  C25B1/50 ,  C25B9/17 ,  C25B9/19

Abstract: The invention provides a method of reducing dinitrogen to produce ammonia, the method comprising: contacting a cathode of an electrochemical cell with an electrolyte comprising: (i) a metal cation selected from the group consisting of lithium, magnesium, calcium, strontium, barium, zinc, aluminium, vanadium and combinations thereof, wherein the metal cation is present at a concentration of greater than 0.5 mol/L in the electrolyte, (ii) one or more anions comprising at least one negative ion selected from the group consisting of fluorinated sulfonyl imides, fluorinated sulfonyl methides and combinations thereof, (iii) a proton carrier; and (iv) optionally, at least one phosphonium cation, wherein the combined amount of the metal cation and the optional at least one phosphonium cation is greater than 1 mol/L in the electrolyte; supplying dinitrogen to the electrochemical cell for cathodic reduction; and applying a potential at the cathode sufficient to reduce the dinitrogen, thereby producing ammonia.

公开(公告)号：US20210238756A1

公开(公告)日：2021-08-05

申请号：US16972160

申请日：2019-06-27

Applicant: MONASH UNIVERSITY

Inventor： Douglas R. MACFARLANE ,  Bryan Harry Rahmat SURYANTO ,  Dabin WANG ,  Hoang-Long DU

IPC: C25B11/054 ,  C25B1/27 ,  C25B11/057 ,  C25B11/081

Abstract: The invention provides a cathode for the nitrogen reduction reaction, comprising an electrically conductive substrate and an electrocatalytic composition on the substrate, wherein the electrocatalytic composition comprises: a support material present in one or more crystalline phases; and metallic clusters dispersed on the support material, the metallic clusters comprising at least one metal selected from ruthenium, iron, rhodium, iridium and molybdenum, wherein at least 80 mass % of the support material is present in a semiconductive crystalline phase having a conduction band minimum energy below (more positive than) −0.3 V relative to the normal hydrogen electrode (NHE).