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Dual Ion Battery (DIB)

A high-power secondary battery that can be quickly charged and discharged


In making the society sustainable, energy management is becoming increasingly important as a key factor of conserving energy. Secondary batteries have become essential in many scenes as key devices to store energy.
Regeneration is a prospective energy conservation technology used in many places. It collects significant portions of kinetic energy and potential energy as electrical energy, which had to be discarded as heat in the past.
In large machines like cars and construction machinery, regenerated current is so large that it cannot be efficiently collected by conventional lithium ion batteries.


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DIB characteristics and markets

Ricoh is developing dual ion batteries, which have a low internal resistance. They will allow quick charge and discharge even where a high current is regenerated from large machines and conventional lithium ion batteries do not work.

Technical highlights

Dual ion batteries can be charged and discharged at large current. They are suitable for high-power applications, and are capable of moving large, heavy objects at a high speed.

A dual ion battery has the structure shown below. Its low resistance makes it easy for the current to flow.

  1. Highly conductive carbon material is used for the cathode.
  2. Even negative ions, which tend not to interact with the medium and are likely to move, are used for storing electricity.

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Operation models

Ricoh's vision

Ricoh has developed application technologies in the areas of carbon and organic materials for copy machines and further intends to use them for batteries and to innovate electricity storage technologies.

Related information

(Exhibition) nano tech 2016, the 15th International Nanotechnology Exhibition & Conference