Recently there was a media
report on a rechargeable magnesium battery: "The magnesium battery
research team formed by Taiwan’s university, Professor Hong, Has achieved
breakthrough progress, which is 8 to 12 times higher than that of traditional
lithium batteries. the efficiency of charge and discharge is increased by 5 times. For electric bicycles, it takes about 3 hours for a
traditional lithium battery to be fully charged. If you use a newly developed
magnesium battery, you can charge it for about 36 minutes. In addition to high
capacity, it is safer, even if the vehicle collides with it, unlike a lithium battery;
there is no danger of explosion. However, the electrolyte used in rechargeable
magnesium batteries is not expensive, and the source of the electrolyte is in
other countries' hands. The synthesis is yet to be broken.”
Compared to rechargeable
magnesium batteries, non-rechargeable disposable magnesium batteries have
quietly entered our lives. The progress of Japanese technology is the fastest. In
response to natural disasters such as sudden earthquakes, Japanese scientists
use magnesium metal as the negative electrode, and use non-precious metal
series carbon electrodes as cathode materials. They emphasized that as long as
water is add than can charge the smart phone 30 times or provide backup power
such as emergency lighting. In China, there
are also related product launches, and replaceable
magnesium plates are available for consumer choice. According
to the literature, the polarization phenomenon caused by the corrosion of the
negative electrode magnesium in the electrolyte has a great correlation with
the discharge performance of the magnesium battery. This article provides
a simple magnesium battery manufacturing process, and compares the battery
discharge performance under different electrolytes.
Magnesium as a battery. After
adding salt water, the positive and negative electrodes chemically react to
produce electricity because magnesium and magnesium alloys are very active
metals and are suitable as anode materials. Cathode oxidants can utilize oxygen
in air or seawater, as well as hydrogen peroxide and hypochlorite. According to
oxidants, currently studied fuel cells can be divide into magnesium-air fuel
cells, magnesium-seawater fuel cells, etc. When no salt water is add, the
positive and negative electrodes will not react, and the magnesium rod is very
stable in the air and can be stored for a long time. The magnesium rod is
soaked in salt water. When there is a start-up
power switch, there will be loss. When the switch is closed, the surface of the
magnesium rod will be protect. The layer can
avoid further oxidative decomposition. The magnesium rod will produce Mg (OH) 2
in the process of power generation. It is the
composition of stomach medicine and flame retardant, non-toxic and
environmental protection, will not cause environmental pollution, and even can
be use continuously for 120 hours.
Taiwan consumes 400 million
alkaline batteries a year. The chemicals inside cause indirect harm to the
human body. Therefore, the company's appeal is not to use a battery to respond
to environmental protection. The company began to use magnesium batteries as a
production product. Based on creativity and fun, camping lights and Christmas
lights are the fruits of our efforts. Water is inject into the products to
generate kinetic energy, and water kinetic energy products are used. It is also
a way to save the earth several traditional batteries and participate in
environmental protection initiatives.
Our company uses Mg bar products:
- Water Power Deco / Christmas Light
- Camping Light; water power
https://wedid.en.taiwantrade.com/product/camping-light-water-power-1448840.html
Reference materials:
https://en.wikipedia.org/wiki/Zinc%E2%80%93air_battery
Tianran Zhang, Zhanliang Taoa and Jun Chen.
Magnesium–air batteries: from principle to application. Mater. Horiz., 2014, 1,
196-206
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