Fuji Jukogyo Kabushiki Kaisha

Subaru Corporation

Ken Baba

Nobuo Ando

Mitsuru Nagai

Takashi Utsunomiya

Yutaka Sato

Satoru Kudo

Yasuyuki Kiya

Takahito Sakuraba

A predoping material is used for an alkali metal ion electric storage device and is represented by Formula (1):RSM)n&#x2003;&#x2003;(1)where M represents lithium or sodium; n represents an integer of 2 to 6; and R represents an aliphatic hydrocarbon, optionally substituted aromatic hydrocarbon, or optionally substituted heterocycle having 1 to 10 carbon atoms).

Predoping material, electric storage device including the material, and method of producing the device

An electrode laminate unit of an electric storage device includes positive electrodes, negative electrodes and a lithium electrode connected to the negative electrode. When an electrolyte solution is injected into the electric storage device, lithium ions are emitted from the lithium electrode to the negative electrode. A positive and a negative electrode current collector have through-holes that guide the lithium ions in the laminating direction. The aperture ratio of the through-holes at the edge parts where the electrolyte solution is easy to be permeated is set to be smaller than the aperture ratio at central parts in order to suppress the permeation. Thus, the distribution of the electrolyte solution is made uniform, whereby the doping amount is made uniform.

Electric storage device

In a current collector laminating step, a current-collector laminate unitcomposed of current-collector materialsandand a film materialis formed. Resist layershaving a predetermined pattern are formed on both surfaces of the current-collector laminate unit. An etching process is performed with the resist layersused as a mask, whereby through-holesandare formed on the respective current-collector materialsand. The resist layersare removed from the current-collector laminate unit. Since the etching process is performed on the plural current-collector materialsand, productivity of an electrode can be enhanced. During the application of the slurry, the film materialprevents the leakage of the electrode slurry. Therefore, the current-collector laminate unitcan be conveyed in the horizontal direction, whereby the productivity of the electrode can be enhanced.

Manufacturing method of electrode, electric storage device, and intermediate laminate member

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Tokyo, Japan

Ken Baba