Application and development trend of lithium ion capacitors

Lithium-ion capacitors have broad application prospects because they combine the advantages of lithium batteries with conventional double-layer capacitors. Compared with lithium batteries, they are more stable and have fewer self-discharging electrodes. Compared with electric double layer capacitors, both the charging speed is not much different, but the energy density is higher than that of the electric double layer capacitor. In the case of the same amount of electricity, the size is only a fraction of the latter.

At present, the improved lithium ion capacitors based on electric double layer capacitors are applied in four aspects: 1. Balanced wind power generation, when the breeze is small, the power generation is small, and the power can be used; when the wind is strong, the capacitor can be used to store electricity without causing waste; 2, street lamp battery, a fully charged unit (including LED lighting, solar panels, lithium ion capacitors) can maintain a full night of lighting, if using nickel-metal hydride batteries or lithium-ion batteries, it is necessary to design complex control modules; Mains balance, the principle of wind power generation, lithium ion capacitors in the UPS uninterruptible power supply system, engineering elevators and other applications to assist the peak current, so that the miniaturization of the system through the small capacity of the main power; 4, backup power: large Powered cars and small electronic control equipment applications.

Lithium-ion capacitors have a certain added value in terms of added value due to their miniaturization advantages, and at the same time, their re-use characteristics are good, reducing the trouble of replacement and maintenance. As a high-end power supply, its development shows good prospects.

1. Replace the electric double layer capacitor and some special purpose lithium batteries, but the replacement speed is not fast, which is determined by the cost performance.

2. The scope of application is expanded.

3. In terms of national industrialization, Japan will continue to lead, while China is relatively lagging behind.

4. Mass production still needs technical breakthroughs, especially the breakthrough of new material technology. Here, we may learn from the improvement of current lithium battery technology, especially the power lithium battery technology, because the requirements of safety and consistency of power lithium batteries are compared. High, this technological advancement will inevitably have a significant role in promoting lithium-ion capacitor technology.

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