If the development of lithium batteries encountered a bottleneck, then magnesium batteries may become a disruptor in the field of batteries, although in the past 10 years lithium batteries in consumer electronics, electric vehicles and many other fields almost occupy a leading position, but in the future, our smart phones or other devices if you need a longer range, then there will definitely be stronger batteries as a substitute for lithium batteries appear, in addition, the cost of magnesium 96% lower than lithium, the use of magnesium batteries will greatly reduce production costs.
What are the advantages of magnesium battery can be compared with lithium battery?
Magnesium battery magnesium battery is a primary battery with magnesium as the negative electrode and some metal or non-metal oxide as the positive electrode. Among the existing varieties, there are similar to the ordinary zinc-manganese dry cell magnesium-manganese dry cell that can be discharged at any time; there is a dry state can be stored for a long time, when the use of water to make it activated and can be used immediately after the reserve type battery
Lithium batteries are a class of batteries made of lithium metal or lithium alloy as the negative electrode material and using non-aqueous electrolyte solution. Lithium batteries can be broadly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium-ion batteries do not contain lithium in the metallic state and are rechargeable.
The structure of the magnesium manganese dioxide dry cell has similarities with the cardboard zinc manganese battery, and the components and ratios of the positive manganese dioxide carbon pack are basically the same, and the negative electrode is a magnesium cylinder.
Magnesium battery energy is very high, energy density units to 800 watt hours / kg, 1 kg of this new battery, equivalent to the use of lead-acid batteries in cars 30 times. Magnesium reserve type battery storage life of up to 10 years or more, can be used in any occasion in the temporary use of water or seawater to activate it, activation can be used within half an hour. Its working voltage is very smooth, the service life is generally 0.5-24 hours. Lithium batteries can only be expected.
Compared with the lithium battery magnesium battery has a variety of advantages, such as lithium melting point of about 180 degrees Celsius, while the melting point of magnesium up to about 650 degrees Celsius, so more secure, in addition to magnesium ore reserves are much richer than lithium. However, the development of magnesium batteries also face some technical difficulties, for example, has not previously found a suitable cathode material, while now can not be stable charging and discharging is also one of the problems.
Magnesium battery and lithium battery compared to the biggest advantage is the following points
1. magnesium battery charging and discharging cycle in the negative electrode will not appear magnesium dendrite, lithium in the lithium dendrite growth may pierce the diaphragm leading to battery short circuit fire, explosion and other dangers.
2. magnesium content is richer than lithium, the price is relatively cheap.
3. magnesium monomers compared with lithium monomers, higher melting and boiling points (648 ℃ / 1170 ℃), chemically inert, easy to process.
Finally, our country is the world's largest producer of raw magnesium, accounting for 70% of the global market. As the world's most important source of raw magnesium, China's raw magnesium production capacity is sufficient, full competition, low price with the international market. China's raw magnesium production area is mainly distributed in Shanxi, Ningxia, Liaoning and other places.
The above is the difference between magnesium battery and lithium battery, due to the performance to price ratio of magnesium battery, better than any previous battery, and safer, more environmentally friendly, so it can replace the existing lithium battery products on the market, and will become the mainstream of the market products.
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