Patent · US Active

Method for storing energy in the form of hydrazine carbonate

US11091845B2 · kind B2 · utility

0Cited by

3References

13Claims

0Family size

Assignee

Schaeffler Technologies AG & Co. KG · DE

Inventors

Walter Holweger · Epfendorf, DE
Moritz Wegener · Erlangen, DE
Yashar Musayev · Nuremberg, DE

Key dates

Filing date	Sep 22, 2017
Grant date	Aug 17, 2021
Priority date	—
Expiry date	Mar 29, 2038

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P70/50
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

Energy storage is accomplished by producing hydrazine carbonate and later reconverting the hydrazine carbonate to release the energy. Sea water is firstly used in an electrolysis process to prepare hypochlorite. The hypochlorite reacts as a result of introduction of ammonia to produce monochloramine and then hydrazine. The hydrazine reacts as a result of introduction of carbon dioxide to give hydrazine carbonate. To release the energy, the hydrazine carbonate liberates hydrogen or at least a hydrogen-containing gas by reaction over a noble metal-free catalyst. The hydrogen may then be enriched before being fed to a fuel cell.

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