Hydrogen production technology by electric power-Lithium - Ion Battery Equipment

Hydrogen production technology by electric power decomposition of water -Lithium - Ion Battery Equipment

Scientists at Stanford University in California have demonstrated a new water electrolysis device that can produce hydrogen from brine. Although it is a mature technology to use electricity to decompose water to produce hydrogen, its commercial application has begun to appear in various markets. Most electrolytic cells need purified water to operate, and system components are rapidly degraded in the presence of salt.

If technology is expanded to represent an important part of our energy structure, it may bring heavy pressure on water resources. According to researchers at Stanford University, the amount of hydrogen gas required for scenes of fuel cars and power cities cannot be produced with pure water, but if all water in seawater is available, this problem can be solved. "Seawater is the most abundant aqueous electrolyte material on the earth," wrote the abstract of the research paper. "But its implementation in the water decomposition process has brought many challenges, especially for the anodic reaction."

The key to the system demonstrated at Stanford University is a new type of anode, which prevents salt corrosion through a negatively charged layer. The researchers explained that the anode consists of a nickel foam core, which transmits electric energy from the power supply. The nickel iron hydride on the top of the nickel hydroxide nickel hydroxide layer initiates the electrolysis process, while nickel sulfide generates negative charges during the electrolysis process. During the process, protect the core material from the chloride in the brine. The researchers interpreted this concept as similar to the concept that the negative ends of two magnets repel each other.

A solar driven experiment was carried out by Ji, as described in the paper. The high degree of sea water continued to split into hydrogen and oxygen fuel, which was published in the journal collection of the National Academy of Sciences in the United States. The solar powered demonstration machine used to produce hydrogen and oxygen from seawater collected from the San Francisco Bay. The electrolytic cell operates continuously for more than 1000 hours under the current density of 400mA/cm2 and voltage of 2.12, and there is no obvious corrosion.(Lithium - Ion Battery Equipment)

The researchers pointed out that if there is no coating, the anode will usually fall apart after less than 12 hours of operation... The entire electrode will collapse into pieces, but with this layer, it can last for more than 1000 hours, "said Michael Kenny, the first author of the paper." What is impressive about this research is that we can work at the same current as that used in today's industry. "



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