Performance Analysis and Application of Lithium Ion Capacitors

As a new type of energy storage device, lithium ion capacitors not only have high energy density, but also have excellent power density and long cycle life. They have great application potential in high-power and long-life application scenarios. Firstly, this paper theoretically analyzed the reasons for the energy limitation of electrical double-layer capacitors and the performance improvement of lithium ion capacitors, and then compared and discussed the performance differences between lithium ion capacitors and electrical double-layer capacitors. Finally, the application potential of lithium ion capacitors in intelligent instruments, automotive energy conservation and emission reduction, new energy vehicles and renewable energy power generation and power storage was briefly analyzed. The results provide a theoretical basis for further improving the energy density of lithium ion capacitors, and point out the direction for the application of lithium ion capacitors.