公开(公告)号：US11725292B2

公开(公告)日：2023-08-15

申请号：US17828172

申请日：2022-05-31

Applicant: University of Houston System

Inventor： Zhifeng Ren ,  Fang Yu ,  Haiqing Zhou ,  Shuo Chen

IPC: C23C16/30 ,  C25B11/075 ,  C25B11/061 ,  C25B1/04 ,  C23C16/04 ,  C23C16/18

CPC classification number: C25B11/075 ,  C23C16/045 ,  C23C16/18 ,  C23C16/30 ,  C25B1/04 ,  C25B11/061

Abstract: A method of electrocatalytic water splitting by providing an anode and a cathode; and utilizing the anode and the cathode for alkaline water electrolysis. Each of the anode and the cathode comprises a uniform distribution of a bifunctional electrocatalyst comprising metallic phosphides on a conductive substrate. The metallic phosphides comprise arion phosphide (FeP) and dinickel phosphide (Ni2P). The bifunctional electrocatalyst promotes hydrogen evolution reaction (HER) at the cathode, and oxygen evolution reaction (OER) at the anode.

公开(公告)号：US11271193B2

公开(公告)日：2022-03-08

申请号：US16492319

申请日：2018-03-12

Applicant: University of Houston System

Inventor： Zhifeng Ren ,  Shuo Chen ,  Fang Yu ,  Haiqing Zhou

IPC: H01M4/04 ,  C25B1/04 ,  H01M4/02

Abstract: A method of manufacturing an electrode by disposing a three-dimensional substrate in a metal nitrate solution, drying, and thermally phosphatizing with a phosphorus source under inert gas to form a metal based phosphate catalyst on the substrate. An electrocatalyst and electrode produced via the method are also provided.

公开(公告)号：US11447882B2

公开(公告)日：2022-09-20

申请号：US17047032

申请日：2019-04-10

Applicant: University of Houston System

Inventor： Zhifeng Ren ,  Fang Yu ,  Haiqing Zhou ,  Shuo Chen

IPC: C23C16/30 ,  C25B11/075 ,  C25B11/061 ,  C25B1/04 ,  C23C16/04 ,  C23C16/18

Abstract: A method of manufacturing a bifunctional electrocatalyst for overall water splitting comprising oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) by growing electrocatalyst comprising primarily metallic phosphides on a three-dimensional substrate by: immersing the substrate in an iron nitrate solution to form a once disposed substrate; subjecting the once disposed substrate to thermal phosphidation with phosphorus powder under inert gas to grow metal phosphides thereupon and form a once subjected substrate; cooling the once subjected substrate to form a cooled, once subjected substrate; immersing the cooled, once subjected substrate in an iron nitrate solution to form a twice disposed substrate; and subjecting the twice disposed substrate to thermal phosphidation with phosphorus powder under inert gas to provide an electrode comprising the bifunctional electrocatalyst on the three-dimensional substrate.

公开(公告)号：US11162179B2

公开(公告)日：2021-11-02

申请号：US16302572

申请日：2017-05-17

Applicant: University of Houston System

Inventor： Zhifeng Ren ,  Haiqing Zhou ,  Fang Yu ,  Shuo Chen

IPC: C25B11/091 ,  H01M4/86 ,  H01M4/90 ,  C25B11/031 ,  C25B11/051 ,  C25B11/057 ,  C25B11/075 ,  C25B1/04

Abstract: A hybrid three dimensional (3D) hydrogen evolution reaction (HER) catalyst that is formed from a porous Ni foam support, a NiSe2 scaffold positioned on the support; and layered transition metal dichalcogenide (LTMDC) or first-row transition metal dichalcogenide particles positioned on the NiSe2 scaffold. The catalyst provides a low onset potential, large cathode current density, small Tafel slopes, and large exchange current densities, similar in catalytic power to Pt HER catalysts.

公开(公告)号：US20210135184A1

公开(公告)日：2021-05-06

申请号：US16492319

申请日：2018-03-12

Applicant: University of Houston System

Inventor： Zhifeng Ren ,  Shuo Chen ,  Fang Yu ,  Haiqing Zhou

IPC: H01M4/04

Abstract: A method of manufacturing an electrode by disposing a three-dimensional substrate in a metal nitrate solution, drying, and thermally phosphatizing with a phosphorus source under inert gas to form a metal based phosphate catalyst on the substrate. An electrocatalyst and electrode produced via the method are also provided.