Patent · US Active

High specific surface area hard carbon-based electrode active material through carbonization process control and electrode active material by thereof

US10547050B2 · kind B2 · utility

0Cited by

3References

9Claims

0Family size

Assignee

Korea Institute of Carbon Convergence Technology · KR

Inventors

Byungjoo Kim · Daejeon, KR
Hyemin Lee · Daejeon, KR

Key dates

Filing date	Oct 26, 2016
Grant date	Jan 28, 2020
Priority date	—
Expiry date	Jul 16, 2037

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/50
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method of preparing a hard carbon-based electrode active material having high specific surface area by carbonization process control, comprises charging polyurethane into a high temperature furnace, supplying oxygen gas to the high temperature furnace and oxidizing the polyurethane under an oxygen atmosphere, supplying a nitrogen gas to the high temperature furnace and heating to carbonize a stabilized polyurethane under a nitrogen atmosphere, thereby producing a hard carbon, heating the hard carbon under a nitrogen atmosphere and supplying steam to activate the hard carbon under a steam atmosphere, thereby producing an active carbon, supplying hydrogen and reducing the active carbon under a hydrogen atmosphere, and cooling the active carbon under a nitrogen atmosphere.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.