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Five new lithium ion capacitors and their comparison with lithium battery performance

Source: Time:2017-12-25 16:01:55 frequency:

Lithium-ion capacitors are composite capacitors compatible with lithium-ion batteries and electric double-layer capacitors. They are currently in practical use in wind power, streetlight batteries, power generation and industrial equipment. With a focus on the future, new lithium-ion capacitors continue to be used. When they appear, they will show superiority in a particular function. These capacitors are currently being developed in the laboratory.

Lithium-ion capacitors are composite capacitors compatible with lithium-ion batteries and electric double-layer capacitors. They are currently in practical use in wind power, streetlight batteries, power generation and industrial equipment. With a focus on the future, new lithium-ion capacitors continue to be used. When they appear, they will show superiority in a particular function. These capacitors are currently being developed in the laboratory.

   1, fast charging lithium-ion battery container, developer: Japan too lure company. This lithium ion capacitor can be charged in 30 seconds. Lithium-ion capacitors do not have the same power as rechargeable batteries, but their fast charging characteristics make them useful as power sources for a variety of small toys and measuring instruments. They can also be used as batteries in conjunction with solar cells or generators.

   2, high temperature lithium-ion capacitors, developers: Japan FDK company. The positive electrode of the lithium ion capacitor uses activated carbon and the negative electrode uses carbon. The maximum voltage is 3.8V, the electrostatic capacity is 2000F, and the energy density per unit weight is about 14Wh/kg. It is characterized by excellent high-temperature load characteristics and low self-discharge.

   3. Composite lithium ion capacitors, developer: Graduate School of Tokyo University of Agriculture and Technology, Japan. Single-walled carbon nanotubes and lithium titanate (Li4Ti5O12, LTO) composite materials are used as negative electrodes, and have large-capacity and high-rate discharge characteristics. The energy density per unit volume of the electrode area is 45 Wh/L, and the output power density is 17,000 W/L, which is about 4.5 times and about 3.8 times higher than that of the conventional electric double layer capacitor using activated carbon.

   4. Water-based lithium ion capacitors, developer: Fudan University. The negative electrode of the hybrid capacitor is made of activated carbon, and the positive electrode is made of spinel-type lithium manganate (currently used as a positive electrode material for a lithium ion battery), and the electrolyte is an aqueous solution of LiMn 2 O 4 . Capacitors are characterized by high specific energy, high power, long life, low cost and high safety.

   5. Miniaturized lithium ion capacitors, developer: Japan Zhaorong Electronics Co., Ltd. Developed a small cylindrical lithium ion capacitor for small equipment and home appliance applications.

In general, Japan is a leader in the development of lithium-ion capacitors. Different types of lithium-ion capacitors highlight high-rate charge and discharge, high/low temperature resistance, and extra large/micro lithium ion capacitors to suit different applications.


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