Electrochemical cells for direct oxide reduction, and related methods
US-2019237209-A1 · Aug 1, 2019 · US
Cathode for rare earth molten salt electrolysis and an electrolysis system comprising the same
US2025215593A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025215593-A1 |
| Application number | US-202418749123-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 20, 2024 |
| Priority date | Dec 29, 2023 |
| Publication date | Jul 3, 2025 |
| Grant date | — |
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- Title
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Abstract
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A cathode for rare earth molten salt electrolysis is provided. The cathode includes a column. The bottom of the column includes a cone. The peak of the cone includes a sharp tip or a flat surface. When the peak of the cone is the sharp tip, an opening angle of the sharp tip is between 5 degree and 175 degree. An electrolysis system having a cathode is also provided.
First claim
Opening claim text (preview).
What is claimed is: 1 . A cathode for rare earth molten salt electrolysis, comprising: a column, wherein the bottom of the column comprises a cone, wherein the peak of the cone comprises a sharp tip or a flat surface, wherein when the peak of the cone is a sharp tip, an opening angle of the sharp tip is between 5 degree and 175 degree. 2 . The cathode for rare earth molten salt electrolysis as claimed in claim 1 , wherein the cathode comprises tungsten, molybdenum, tantalum or alloy thereof. 3 . The cathode for rare earth molten salt electrolysis as claimed in claim 1 , wherein when the peak of the cone is a sharp tip and the slant lengths of the cone are the same, an opening angle of the sharp tip is calculated by formula (I): c 2 = 2 a 2 ( 1 - cos ( γ ) ) , ( I ) wherein c is a diameter of the column, a is a slant length of the cone, and γ is an opening angle of the sharp tip. 4 . The cathode for rare earth molten salt electrolysis as claimed in claim 1 , wherein the slant lengths of the cone are different. 5 . An electrolysis system, comprising: a cathode; at least one anode; and an electrolyte containing rare earth oxides, wherein the cathode and the at least one anode are disposed in the electrolyte, and wherein a ratio of a surface area of the cathode to a surface area of the at least one anode is between 1:100 and 1:1. 6 . The electrolysis system as claimed in claim 5 , wherein the cathode comprises a column. 7 . The electrolysis system as claimed in claim 6 , wherein the bottom of the column comprises a plane, an arc or a cone. 8 . The electrolysis system as claimed in claim 7 , wherein the peak of the cone comprises a sharp tip or a flat surface. 9 . The electrolysis system as claimed in claim 8 , wherein when the peak of the cone is a sharp tip, an opening angle of the sharp tip is between 5 degree and 175 degree. 10 . The electrolysis system as claimed in claim 8 , wherein when the peak of the cone is a sharp tip and the slant lengths of the cone are the same, an opening angle of the sharp tip is calculated by formula (I): c 2 = 2 a 2 ( 1 - cos ( γ ) ) , ( I ) wherein c is a diameter of the column, a is a slant length of the cone, and γ is an opening angle of the sharp tip. 11 . The electrolysis system as claimed in claim 8 , wherein the peak of the cone is the sharp tip, and the slant lengths of the cone are different. 12 . The electrolysis system as claimed in claim 5 , wherein the at least one anode surrounds the cathode. 13 . The electrolysis system as claimed in claim 5 , wherein the cathode comprises tungsten, molybdenum, tantalum or alloy thereof. 14 . The electrolysis system as claimed in claim 5 , wherein the at least one anode comprises graphite. 15 . The electrolysis system as claimed in claim 5 , wherein the rare earth oxides comprise neodymium oxide, praseodymium oxide or dysprosium oxide.
Assignees
Inventors
Classifications
Cell construction, e.g. bottoms, walls, cathodes · CPC title
of cells for the electrolysis of melts (C25C7/02 - C25C7/06 take precedence) · CPC title
of metals not provided for in groups C25C3/02 - C25C3/32 · CPC title
- C25C7/025Primary
used in cells for the electrolysis of melts · CPC title
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- What does patent US2025215593A1 cover?
- A cathode for rare earth molten salt electrolysis is provided. The cathode includes a column. The bottom of the column includes a cone. The peak of the cone includes a sharp tip or a flat surface. When the peak of the cone is the sharp tip, an opening angle of the sharp tip is between 5 degree and 175 degree. An electrolysis system having a cathode is also provided.
- Who is the assignee on this patent?
- Ind Tech Res Inst
- What technology area does this patent fall under?
- Primary CPC classification C25C7/025. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Jul 03 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).