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- What is a Quaternary Lithium Battery
What is a Quaternary Lithium Battery
With the rapid development of electric vehicles and large-scale energy storage systems, the demand for rechargeable batteries with high energy density has increased sharply. In order to meet the needs of high energy density, high safety attributes and cost reduction, people have been conducting extensive research on electrode materials. Today, let's learn about the new NCMA Quaternary lithium battery and see what advantages it has compared with the current ternary lithium battery.
At present, the mainstream ternary batteries in the market are roughly divided into two technical routes: NCA and NCM. However, whether NCA or NCM, consumers have the same demands for pure electric vehicle power batteries: improving safety, improving energy density and reducing costs. NCMA, intuitively, seems to be NCA + NCM.
In short, increasing the proportion of nickel in ternary lithium battery can improve the energy density of the battery, plug more power under the same weight, and make the car run farther. However, when the nickel content exceeds 90% (i.e. ultra-high nickel battery), the thermal stability of the battery will decline rapidly, and the capacity retention rate will also begin to decline. That is, the security is reduced and it is easier to decay. NCMA battery, on the basis of NCM ultra-high nickel battery, is mixed with aluminum. According to the research, the performance of NCMA battery is greatly improved.
Aluminum doping significantly improves the cycle stability of nickel rich NCM cathode, but it is accompanied by the loss of battery capacity when excessive introduction. Finally, the researchers put forward the most reasonable scheme, namely ncma89: Li [Ni 0.89 co 0.05 Mn 0.05 al 0.01] O 2, in which nickel accounts for 89%, cobalt accounts for 5%, manganese accounts for 5% and aluminum accounts for 1%. This battery provides the best combination of capacity and cycle life, and its performance is better than NCA and NCM batteries with similar positive nickel content, Li [Ni 0.90 co0.05 mn0.05] O2 (ncm90) and Li [Ni 0.885 co0.100 al0.015] O2 (nca89) were compared. As shown in the figure below, compared with NCA 89 and NCM 90 ultra-high nickel ternary batteries, NCMA 89 quaternary batteries perform better than NCA and NCM in six dimensions such as capacity attenuation and micro crack suppression.
For example, the capacity retention rates of NCMA 89, NCM 90 and NCA 89 are 84.5%, 68% and 60.2% respectively when 1000 charge discharge tests are carried out at 25 ℃, 3.0 - 4.2V and 1 C.
The thermal stability of the cathode is also important for battery safety. It can be seen from the scanning calorimetry data that the peak temperature of nca89 cathode exothermic reaction is 202 ° C and the heat generated is 1753 J G – 1, while the peak temperature of ncm90 cathode is 192 ° C and the heat generated is 1561 J G – 1. In contrast, the Peak Exothermic Temperature of ncma89 is 205 ° C and the heat generated is 1384 J G – 1, showing higher thermal stability. The improvement of the thermal performance of ncma89 cathode is attributed to the reduction of the number of microcracks, thereby reducing the number of permeable electrolytes. Because the synergistic action of Al, Al and Mn ions stabilizes the layered structure and delays the thermally induced phase transition, the ncma89 cathode is the most stable in structure.
However, the mass production process of quaternary lithium battery is more complex than ternary lithium battery, and it still takes a long way to achieve mass production.
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1. Pure sine wave AC output, stable performance, no working noise. 2. Built-in safety, environmental protection, long life lithium iron phosphate battery. 3. Multiple DC output, compatible with multiple devices at the same time power supply. 4. Supports output by USB and Type-C interfaces and QC3.0 fast charge. 5. Intelligent high-power output, stable and reliable. 6. The screen displays the working status information in real time. 7. LED lighting, flash. SOS Multiple modes. 8. Intelligent battery protection system can effectively prevent over charge, over discharge, over current, short circuit and other problems. 9. Power supply supports a variety of charging modes, supporting car and solar charging. 10. Small size, light weight, easy to carry.
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1. Pure sine wave inverter output, voltage and current stability. 2. Built-in large capacity, long life, efficient rechargeable power lithium-ion battery. 3. DC multi-voltage output, compatible with a variety of devices at the same time power supply. 4. Supports output by USB and Type-C interfaces and QC3.0 fast charge. 5. Intelligent high-current DC output, supporting all DC loads working at the same time. 6. Digital display screen displays the working status of the device in real time. 7. LED strong light lighting, with a variety of lighting modes. 8. Intelligent battery protection system can effectively prevent over charge, over discharge, over current, short circuit and other problems. 9. Power supply support a variety of charging modes, support solar charging. 10. Small size, large capacity, light weight, easy to carry.
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1. Adopt lithium iron phosphate cell with high safety and long life 2. High-performance BMS ensures battery voltage, current and temperature protection. 3. Support RS485/CAN/ RS232 communication, compatible with a variety of inverter systems. 4. Widely used, solar home energy storage and other systems. 5. Standard design, easy installation and easy maintenance. 6. Multiple machines can be used in parallel according to user requirements.
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1. Lithium iron phosphate cell. High safety, long service life. 2. Intelligent BMS management system, effective lithium battery overcharge, overdischarge, overload, temperature and other protection. 3. Support RS485/CAN and other communications, compatible with standard telecom rectifier and energy storage system. 4. Standard design, easy installation and easy maintenance. 5. Solar energy storage and industrial projects are widely used 6. Multiple machines can be used in parallel.
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Features: 1. Lithium iron phosphate cell, strict screening, good consistency. 2. Built-in battery management system, the battery has overcharge, overdischarge, overload and temperature self-protection, to protect the safety of the battery. 3. Optional Bluetooth function, real-time control of battery status information. 4. Lighter, smaller and longer life than lead-acid batteries. 5. Low power consumption, longer battery life. 6. We can customize products according to customer requirements, including printing customer Logo.
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Features: 1. Adopt lithium iron phosphate with high safety and long life. 2. Built-in battery protection circuit, battery with overcharge, overdischarge, overload and temperature self-protection, users can rest assured to use. 3. Optional Bluetooth communication function, each battery has an independent number, access to the number can be real-time battery status information. 4. Green energy, pay attention to environmental protection and reject pollution. 5. Stable performance, reliable quality. 6. Can be customized according to customer requirements, including printing customer Logo.
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