Nitrogen-containing carbon material and process for producing nitrogen-containing carbon material, and slurry, ink, and electrode for fuel cell

Patent metadata

Field	Value
Publication number	US-10727495-B2
Application number	US-201515124574-A
Country	US
Kind code	B2
Filing date	Mar 11, 2015
Priority date	Mar 11, 2014
Publication date	Jul 28, 2020
Grant date	Jul 28, 2020

Abstract

A nitrogen-containing carbon material containing a nitrogen atom, a carbon atom, and a metal element X, in which the atomic ratio (N/C) of the nitrogen atom to the carbon atom is 0.005 to 0.3, the content of the metal element X is 0.1 to 20% by mass, and the average particle diameter is 1 to 300 nm.

First claim

The invention claimed is:

1. An ink comprising a nitrogen-containing carbon material comprising:
a nitrogen atom;
a carbon atom; and
a metal element X;
wherein the metal element X comprises at least one selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Nb, Mo, Ru, Rh, Pd, Ag, Hf, Ta, W, Re, Os, Ir, Pt, and Au,
an atomic ratio (N/C) of the nitrogen atom to the carbon atom is 0.005 to 0.3,
a content of the metal element X is 0.5 to 20% by mass,
an average particle diameter is 1 to 300 nm; and

an amount of impurities is 0.3 to 3% by mass.

2. The ink according to claim 1 , wherein the metal element X comprises iron and/or cobalt.

3. The ink according to claim 1 , wherein the average particle diameter is 1 to 100 nm.

4. An electrode for a fuel cell, comprising a nitrogen-containing carbon material comprising:
a nitrogen atom;
a carbon atom; and
a metal element X;
wherein the metal element X comprises at least one selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Nb, Mo, Ru, Rh, Pd, Ag, Hf, Ta, W, Re, Os, Ir, Pt, and Au,
an atomic ratio (N/C) of the nitrogen atom to the carbon atom is 0.005 to 0.3,
a content of the metal element X is 0.5 to 20% by mass,
an average particle diameter is 1 to 300 nm; and

an amount of impurities is 0.3 to 3% by mass.

5. The electrode for a fuel cell according to claim 4 , wherein the metal element X comprises iron and/or cobalt.

6. The electrode for a fuel cell according to claim 4 , wherein the average particle diameter is 1 to 100 nm.

Assignees

• Asahi Chemical Ind

Inventors

• Ichihara Takeo
• Hinago Hidenori
• Tanaka Saya

Classifications

• Y02E60/50

  Fuel cells · CPC title

• C09D11/00

  Inks · CPC title

• C01B32/00 Primary

  Carbon; Compounds thereof (C01B21/00, C01B23/00 take precedence; percarbonates C01B15/10; carbon black C09C1/48) · CPC title

• H01M2008/1095

  Fuel cells with polymeric electrolytes · CPC title

• H01M4/9091 Primary

  Unsupported catalytic particles; loose particulate catalytic materials, e.g. in fluidised state · CPC title