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1. WO2021030755 - NON-NOBLE METAL-NITRIDE BASED ELECTROCATALYSTS FOR HIGH-PERFORMANCE SEAWATER SPLITTING

Publication Number WO/2021/030755
Publication Date 18.02.2021
International Application No. PCT/US2020/046521
International Filing Date 14.08.2020
IPC
B01J 27/24 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
27Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
24Nitrogen compounds
B01J 35/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
35Catalysts, in general, characterised by their form or physical properties
B01J 37/08 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
37Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
08Heat treatment
C02F 1/461 2006.01
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
46by electrochemical methods
461by electrolysis
C25B 1/04 2006.01
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
BELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR
1Electrolytic production of inorganic compounds or non-metals
02of hydrogen or oxygen
04by electrolysis of water
C02F 103/08 2006.01
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
103Nature of the water, waste water, sewage or sludge to be treated
08Seawater, e.g. for desalination
Applicants
  • UNIVERSITY OF HOUSTON SYSTEM [US]/[US]
Inventors
  • REN, Zhifeng
  • YU, Luo
  • CHEN, Shuo
  • YU, Ying
Agents
  • MAAG, Gregory L.
  • SULLIVAN, Kristian R.
Priority Data
62/887,44215.08.2019US
62/916,40017.10.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) NON-NOBLE METAL-NITRIDE BASED ELECTROCATALYSTS FOR HIGH-PERFORMANCE SEAWATER SPLITTING
(FR) ÉLECTROCATALYSEURS À BASE DE NITRURE DE MÉTAL NON NOBLE POUR DISSOCIATION DE L'EAU DE MER À HAUTE PERFORMANCE
Abstract
(EN)
A stable three-dimensional core-shell metal-nitride catalyst consisting of NiFeN nanoparticles decorated on NiMoN nanorods supported on porous Ni foam (NiMoN@NiFeN), which functions as an oxygen evolution reaction catalyst for alkaline seawater electrolysis. It yields large current densities of 500 and 1000 mA cm-2 at overpotentials of 369 and 398 mV, respectively, in alkaline natural seawater at 25 ℃. Combined with an efficient hydrogen evolution reaction catalyst of NiMoN nanorods, current densities of 500 and 1000 mA cm-2 at low voltages of 1.608 and 1.709 V, respectively are achieved for overall alkaline seawater splitting at 60 ℃.
(FR)
L'invention concerne un catalyseur de nitrure métallique à noyau-enveloppe tridimensionnel stable constitué de nanoparticules de NiFeN décorées sur des nanotiges de NiMoN supportées sur de la mousse de Ni poreuse (NiMoN@NiFeN), qui fonctionne en tant que catalyseur de réaction de dégagement d'oxygène pour l'électrolyse d'eau de mer alcaline. L'invention produit des densités de courant importantes de 500 et 1 000 mA cm-2 à des surtensions de 369 et 398 mV, respectivement, dans de l'eau de mer naturelle alcaline à 25 °C. Combinées à un catalyseur de réaction de dégagement d'hydrogène efficace de nanotiges de NiMoN, des densités de courant de 500 et 1 000 mA cm-2 à des tensions basses de 1,608 et 1,709 V, respectivement, sont obtenues pour une dissociation d'eau de mer alcaline globale à 60 °C.
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