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Why Is The Lithium Battery Most Used In Energy Storage Technology?
- Jun 21, 2018 -

1. Ordinary lead-acid storage energy is suitable for standby power supply. The lead-acid storage technology is mature, the cost in all chemical energy storage in the lowest, but there is not self discharge, deep discharge, heavy metal pollution, can only run put or standby condition in shallow filling, and short cycle life (usually hundreds of times). The technical characteristics of ordinary lead-acid batteries decide that the most suitable energy storage applications are communication backup power supply.

2, sodium sulfur and liquid flow battery are suitable for energy storage applications such as large capacity energy storage. Sodium sulfur battery energy density is 3-5 times of the lead-acid, working temperature at about 300 degrees, but the technology is Japan NGK monopoly, applicable to the power system peak load and frequency application. A typical power flow battery in more than 10MW, suitable for large capacity and high power energy storage system, is currently the most mature vanadium redox flow battery, for large-scale distributed storage and peak shaving.

3, lead carbon batteries with good economic benefits, the current domestic lead carbon batteries and lithium batteries have been the new micro grid energy storage and scenery storage demonstration project, technical index verification, the future is expected to become the two important technical route of renewable energy storage applications. Lead carbon battery has superior performance and is expected to be commercialized. Lead carbon battery lead-acid batteries and super capacitors together effectively, while maintaining the energy density of the battery, and super capacitor has the characteristics of high power, fast charge discharge, long cycle life. Compared with the traditional lead-acid battery, the cycle life of the product is greatly improved, and the investment cost is better than that of the lithium battery, thus greatly reducing the comprehensive cost of the energy storage system. We expect that the lead carbon battery will be commercialized earlier than the lithium battery.

4. Lithium power is suitable for power applications in vehicle energy storage and power systems. Lithium battery has high energy density and high specific power, but the cost is high. Lithium battery is suitable for mobile energy storage such as electric vehicles. In recent years the application in power system and standby power grid frequency is also of concern, can replace the lead-acid battery for small and medium sized communication station, is used in small household energy storage system. With the reduction of battery cost, there will be great potential for wind and solar energy storage in the future.

 In the long run, lithium batteries still have potential for development. Lithium battery energy density, high power density, can be used in wide fields, and domestic and foreign research and development in lithium power and communication in the field of investment will accelerate the decline in the cost of upgrading and the performance of the lithium battery, which is the other electrochemical energy storage batteries do not have. At present in the field of communication base station lithium battery lead-acid battery has achieved some alternative, and become the domestic wind power energy storage battery supporting the main demonstration project, in the foreign household storage also has a wide range of applications. The performance of lithium batteries is expected to break through in 10 years. According to the plan of NEDO (Japan's new energy industry comprehensive development agency) road map: by 2020, power lithium battery performance will be more breakthrough than the current, energy density and service life doubles, and the power density will increase obviously; by 2020, the cycle number of energy storage battery will reach 4 times, the service life of 15 In 2030, it will fully meet the requirements of 20 years in the industrial field.

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