Advantages of lithium-manganate batteries
1. High safety
Lithium manganate has good safety performance. According to the investigation, during actual acupuncture or short circuit experiments, it was found that a small number of samples burned, but there was not a single explosion incident in the overcharge experiments, a high voltage charge far exceeding its own discharge voltage. several times, then there was an explosion. In fact, after the overcharge reaction of lithium manganate, its safety has been greatly improved compared with other lithium batteries.
2. Long life
We all know that the life of so-called long-life lead-acid batteries can only reach about 300 times, with a maximum of 500 times. . The lithium manganate battery has a lifespan of more than 2,000 times. The lifespan of lead-acid batteries of the same quality is generally around 2-3 years, whileis that the theoretical lifespan of lithium-manganate batteries will reach 7-8 years when used under the same conditions.
3. Large capacity without memory effect
When the battery is often used under conditions where it is fully charged but not fully discharged, the capacity will quickly fall below the rated capacity value. . This phenomenon is called memory effect. Nickel metal hydride and nickel cadmium batteries have memory, but lithium manganate batteries do not have this phenomenon and the battery capacity will not be reduced. Regardless of the battery condition, it can be charged and used at any time. There is no need to unload it and then recharge it. The volume of a lithium manganate battery with the same specifications and capacity is 2/3 that of a lead-acid battery, and its weight is 1/3 that of a lead-acid battery.
4. Green and reEnvironmentally friendly
Lithium manganate batteries are generally considered non-toxic and non-polluting because they do not contain any heavy or rare metals. The reason why lithium batteries are favored by the industry is mainly due to environmental protection considerations. As an important branch of lithium batteries, the environmental performance of lithium manganate is self-evident.
5. Good high temperature performance
It is understood that the thermal peak of lithium manganate can reach 350℃-500℃, while the thermal peak of some lithium batteries is only about 200℃. Therefore, lithium manganate has some advantages in high temperature performance!
Inevitably, lithium-lithium manganate batteries also have their own disadvantages: their low temperature performance is poor, and the costpreparation of lithium-manganese materials and the manufacturing cost of batteries are relatively high.
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1. Lithium Cobalt Oxide
Advantages: Lithium Cobalt Oxide has a high and relatively high discharge platform. Specific capacity.It has the advantages of high yield, good cycle performance and simple synthesis process.
Disadvantages: Lithium cobalt oxide materials contain highly toxic cobalt elements and are relatively expensive, making it difficult to ensure safety when manufacturing large batteries. power.
2. Lithium iron phosphate
Advantages: Lithium iron phosphate does not contain harmful elements, is inexpensive, very safe, and has a service life of up to 10,000 times.
Disadvantages: The energy density of lithium iron phosphate batteries is lower thanthat of lithium cobalt oxide and ternary batteries.
3. Ternary Materials
Advantages: Ternary materials can be balanced and regulated in terms of specific energy, circulation, safety and cost.
Disadvantages: Ternary materials are thermally stableThe poorer the quality. For example, NCM11 material decomposes at approximately 300°C, while NCM811 decomposes at approximately 220°C.
4. Lithium manganate
Advantages: Lithium manganate has low cost, safety and good low temperature performance.
Disadvantages: The material itself, lithium manganate, is not very stable and breaks down easily to produce gas.
5. Lithium Nickelate
Advantages: Lithium nickelate has the advantages of high specific capacity, low pollution, moderate price and good electrolyte matching.
Disadvantages: Synthesislithium nickelate is difficult and cycle stability is poor.
Detailed information
Nickel, Different configurations of three elements, cobalt and manganese, can provide different properties to the material:
1. Increasing nickel content will increase material capacity, but degrade cycle performance;
2. The presence of cobalt can make the structure of the material more stable, but too high a content will reduce the capacity;
3. The presence of manganese can reduce costs and improve safety performance, but too high a content will destroy. the material.
Baidu Encyclopedia - Lithium manganese battery
Baidu Encyclopedia - Lithium-cobalt oxide battery
Baidu Encyclopedia - Nickel-cobalt ternary battery material manganese
Baidu Encyclopedia-Lithium iron phosphate battery