What types of batteries are currently on the market and what are their characteristics?
The six lithium batteries specifically include: lithium cobalt oxide (LiCoO2), lithium manganese oxide (LiMn2O4), lithium nickel cobalt manganese oxide (LiNiMnCoO2 or NMC), lithium nickel cobalt aluminate (LiNiCoAlO2 or NCA), lithium iron phosphate (LiFePO4) , Lithium titanate (Li4Ti5O12).
Lithium Cobalt Oxide (LiCoO2)
Its high specific energy makes lithium cobalt oxide a popular choice for mobile phones, notebook computers and digital cameras. The battery consists of a cobalt oxide cathode and a graphite carbon anode. The cathode has a layered structure. During discharge, lithium ions move from the anode to the cathode, while the direction of flow is opposite during the charging process. The cathode has a layered structure. During discharge, lithium ions move from the anode to the cathode; when charging, the flow flows from the cathode to the anode.
The disadvantages of lithium cobalt oxide are relatively short life, low thermal stability and limited load capacity (specific power). Lithium cobalt oxide is excellent in terms of high specific energy, but it can only provide general performance in terms of power characteristics, safety and cycle life.
The batteries used in mobile phones, tablets, and notebook computers are lithium-ion batteries, also known as 3C lithium batteries. 3C lithium batteries need to undergo basic performance testing, electrochemical performance testing, environmental performance testing and safety performance testing. In the test, high-current shrapnel micro-needle modules can be used as the connection medium to transmit current and connect signals. In the current transmission, the high-current shrapnel microneedle module can pass 1-50A current, and the connection is stable without attenuation, and the overcurrent capability is strong; there are also good solutions in small pitches, within the range of 0.15mm-0.4mm , This module can maintain a stable connection, no pin stuck, continuous needle; the high-current shrapnel micro-needle module has an average service life of 20w, and it can be used to contact the male FPC connector with a serrated type and a pointed type to contact the female seat , The yield rate is as high as 99.8%.
Lithium Manganese Oxide (LiMn2O4)
Lithium manganese oxide batteries can be discharged at a current of 20-30A and have moderate heat accumulation. It is also possible to apply up to 50A1 second load pulse. Continuous high load at this current will cause heat to accumulate, and the battery temperature must not exceed 80°C (176°F). Lithium manganate is used in power tools, medical equipment, and hybrid and pure electric vehicles. The lithium manganate cathode crystallizes to form a three-dimensional framework structure formed after formation. Spinel provides low electrical resistance, but has a lower specific energy than lithium cobalt oxide.
The capacity of lithium manganese oxide is about one third lower than that of lithium cobalt oxide. Design flexibility allows engineers to choose to maximize battery life or increase maximum load current (specific power) or capacity (specific energy).
Lithium nickel cobalt manganese oxide (LiNiMnCoO2 or NMC)
One of the most successful lithium ion systems is the cathode combination of nickel manganese cobalt (NMC). Similar to lithium manganate, this system can be customized to be used as an energy battery or power battery. NMC is the battery of choice for power tools, electric bicycles and other electric power systems. NMC has good overall performance and outstanding performance in terms of specific energy. This battery is the first choice for electric vehicles and has the lowest self-heating rate.
Lithium Iron Phosphate (LiFePO4)
Lithium phosphate has good electrochemical performance and low resistance. This is achieved through nano-scale phosphate cathode materials. The main advantages are high rated current and long cycle life; good thermal stability, enhanced safety and tolerance to abuse. If kept at a high voltage for a long time, lithium phosphate is more resistant to all charging conditions and has less stress than other lithium-ion systems. The disadvantage is that the lower nominal voltage of the 3.2V battery makes the specific energy lower than the cobalt-doped lithium-ion battery.
