What are the zero-emission patents for hydrogen production by alkaline water electrolysis?

The patents of zero emission of hydrogen production by alkaline water electrolysis are CN 108922 102A, US20 190352400A 1, CN 109705433A.

1 and CN 108922 102A are hydrogen production devices and methods by alkaline water electrolysis. The patent relates to an alkaline water electrolysis hydrogen production device and a hydrogen production method, which adopt an electrolytic cell, electrolyte, electrodes and a power supply to realize an efficient, stable, energy-saving and environment-friendly alkaline water electrolysis hydrogen production technology.

2. US20190352400a1is a hydrogen production device by alkaline water electrolysis. The patent provides a hydrogen production device by alkaline water electrolysis, which comprises an electrolytic cell, electrolyte, electrodes and a power supply, and has the advantages of high efficiency, stability, energy saving and environmental protection.

3.CN109705433a is a full-process hydrogen production device based on alkaline water electrolysis. The patent relates to a full-flow hydrogen production device based on alkaline water electrolysis, which comprises an electrolytic cell, an electrolyte, an electrode and a power supply, and can realize an efficient, stable, energy-saving and environment-friendly alkaline water electrolysis hydrogen production technology.