Carbon support for fuel cell catalyst and preparation method thereof
US-2017005342-A1 · Jan 5, 2017 · US
Method for Producing a Catalyst Material for an Electrode of an Electrochemical Cell
US2023290964A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2023290964-A1 |
| Application number | US-202118017320-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jul 9, 2021 |
| Priority date | Jul 21, 2020 |
| Publication date | Sep 14, 2023 |
| Grant date | — |
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Abstract
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A method for producing a catalyst material for an electrode of an electrochemical cell includes doping a carbon material with nitrogen atoms, where the doping includes: bringing a carbon material into contact with urea at a temperature in a temperature range from 750° C. to 850° C.; bringing an oxidized carbon material into contact with cyanamide at a temperature in a temperature range from 550° C. to 650° C.; or bringing an oxidized carbon material into contact with melamine at a temperature in a temperature range from 550° C. to 650° C.
First claim
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1 - 10 . (canceled) 11 . A process for producing a catalyst material for an electrode of an electrochemical cell, the process comprising: doping a carbon material with nitrogen atoms, the doping including: bringing the carbon material into contact with urea at a temperature in a temperature range of 750° C. to 850° C.; or bringing an oxidized carbon material into contact with cyanamide at a temperature in a temperature range of 550° C. to 650° C.; or bringing an oxidized carbon material into contact with melamine at a temperature in a temperature range of 550° C. to 650° C. 12 . The process according to claim 11 , wherein the doping of the carbon material with nitrogen atoms is carried out in a tubular oven. 13 . The process according to claim 11 , wherein the doping of the carbon material with nitrogen atoms is carried out for 1.5 to 12 hours. 14 . The process according to claim 13 , wherein the doping of the carbon material with nitrogen is carried out for 2 to 7 hours. 15 . The process according to claim 14 , wherein the doping of the carbon material with nitrogen is carried out for 2 to 4 hours. 16 . The process according to claim 11 , wherein the carbon material is selected from the group consisting of carbon black, graphite, and graphitized carbon. 17 . The process according to claim 11 , further comprising, after doping the carbon material with nitrogen atoms, washing the doped carbon material with water. 18 . The process according to claim 11 , further comprising oxidizing the carbon material to form the oxidized carbon material. 19 . The process according to claim 18 , wherein the oxidation of the carbon material is carried out by reacting the carbon material with a 70% by weight aqueous HNO 3 solution under reflux. 20 . The process according to claim 11 , further comprising, after doping the carbon material with nitrogen atoms, adding platinum or a platinum-containing alloy to the carbon material doped with nitrogen atoms. 21 . The process according to claim 20 , wherein a platinum or platinum-containing alloy content, based on the carbon material doped with nitrogen atoms, is 5 to 50% by weight. 22 . The process according to claim 11 , wherein the doping of the carbon material with nitrogen atoms is carried out such that the carbon material is doped with 0.4% by weight to 2% by weight nitrogen. 23 . The process according to claim 22 , wherein the doping of the carbon material with nitrogen atoms is carried out such that the carbon material is doped with 0.8% by weight to 1.5% by weight nitrogen. 24 . The process according to claim 11 , wherein the electrode is formed as cathode.
Assignees
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Classifications
- H01M4/926Primary
on carbon or graphite · CPC title
Carbon-based electrodes · CPC title
Fuel cells with polymeric electrolytes · CPC title
Fuel cells · CPC title
Sintered carriers · CPC title
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- What does patent US2023290964A1 cover?
- A method for producing a catalyst material for an electrode of an electrochemical cell includes doping a carbon material with nitrogen atoms, where the doping includes: bringing a carbon material into contact with urea at a temperature in a temperature range from 750° C. to 850° C.; bringing an oxidized carbon material into contact with cyanamide at a temperature in a temperature range from 550…
- Who is the assignee on this patent?
- Bayerische Motoren Werke Ag
- What technology area does this patent fall under?
- Primary CPC classification H01M4/926. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Sep 14 2023 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).