Electrodes, compositions, and devices having high structure carbon blacks

Patent metadata

Field	Value
Publication number	US-10367202-B2
Application number	US-201715586670-A
Country	US
Kind code	B2
Filing date	May 4, 2017
Priority date	May 5, 2016
Publication date	Jul 30, 2019
Grant date	Jul 30, 2019

Abstract

An electrode for an energy storage device includes carbon black particles having (a) a Brunauer-Emmett-Teller (BET) surface area ranging from 70 to 120 m2/g; (b) an oil absorption number (OAN) ranging from 180 to 310 mL/100 g; (c) a surface energy less than or equal to 15 mJ/m2; and (d) either an La crystallite size less than or equal to 29 Å, or a primary particle size less than or equal to 24 nm.

First claim

What is claimed is:

1. An electrode for an energy storage device, comprising:
a lithium ion-based electroactive material; and
carbon black particles having (a) a Brunauer-Emmett-Teller (BET) surface area ranging from 70 to 120 m 2 /g; (b) an oil absorption number (OAN) ranging from 180 to 310 mL/100 g; (c) a surface energy less than or equal to 15 mJ/m 2 ; and (d) either an L a crystallite size less than or equal to 29 Å, or a primary particle size less than or equal to 24 nm.

2. The electrode of claim 1 , wherein the carbon black particles have both an La crystallite size less than or equal to 29 Å, and a particle size less than or equal to 24 nm.

3. The electrode of claim 1 , wherein the carbon black particles have a particle size less than or equal to 24 nm.

4. The electrode of claim 1 , wherein the carbon black particles have a surface energy less than or equal to 10 mJ/m 2 .

5. The electrode of claim 1 , wherein the carbon black particles have a % crystallinity (I G /I G+D ) less than or equal to 45%, as determined by Raman spectroscopy.

6. The electrode of claim 1 , wherein the carbon black particles have an oxygen content of less than or equal to 1 wt %.

7. The electrode of claim 1 , wherein the carbon black particles have a dispersability of less than one micron (D 50 by volume).

8. The electrode of claim 1 , wherein the carbon black particles have a ratio of statistical thickness surface area to Brunauer-Emmett-Teller surface area (STSA:BET) greater than 0.95:1.

9. The electrode of claim 1 , wherein the carbon black particles have a BET surface area ranging from 90 to 110 m 2 /g.

10. The electrode of claim 1 , wherein the carbon black particles have an OAN ranging from 220 to 270 mL/100 g.

11. The electrode of claim 1 , wherein the carbon black particles have an L c crystallite size ranging from 17 to 27 Angstroms.

Assignees

• Cabot Corp

Inventors

• Korchev Andriy
• Dupasquier Aurelien L
• Oljaca Miodrag
• Moeser Geoffrey D

Classifications

• H01M2004/021

  Physical characteristics, e.g. porosity, surface area · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M4/625 Primary

  Carbon or graphite · CPC title

• H01G11/42

  Powders or particles, e.g. composition thereof · CPC title

• C09C1/56

  Treatment of carbon black {; Purification} · CPC title