Iwate University, Japan developed a thick 10 m lithium ion rechargeable battery

"Ultra-thin battery is coming" (Japan Graduate School of Iwate University, Professor Ma chang shou). Professor of Iwate University, Professor of the development of a thickness of only 10 m ultra thin lithium ion rechargeable battery. The use of ultra-thin substrate at the same time, so that all of the active substances through sputtering film, thus achieving the ultra-thin. The goal is to apply it in the field of IC card, active RFID tag and electronic paper.

The development of ultra-thin battery from 10 m thick stainless steel SUS304 and thick film of 1 m. The stainless steel has the function of the bottom plate and the cathode collector, and the cathode active material V2O5, the solid electrolyte Li3PO4, the anode active substance LiMn2O4 and the anode collector V are sequentially sputtered into a film.

The charge discharge capacity is 10 ~ 30 Ah/cm2, the energy density can reach 40 Wh/cm2. If the film is covered several times, the energy density can be further improved. In addition, the configuration of thin film solar cell Si ultra-thin battery has also been developed successfully.

Previously, NEC was released in December 2005 300 m thick organic (radical) battery. 30 seconds fast charging, energy density as high as 1mWh/cm2. Electronic paper and other emerging areas of ultra-thin battery development more and more active.