Electrode, method for producing said electrode, and electricity storage device provided with said electrode
AssigneeNippon Chemi-Con Corporation
InventorsSatoshi Kubota, Shuichi Ishimoto
Life of this patent
Estimating the term…
Abstract
A storage device having excellent cycle lifetime, an electrode used in this storage device, and a production method of the electrode are provided. An electrode comprising an active material and a conductive carbon including oxidized carbon. A surface of the active material is covered by the conductive carbon. A Raman spectrum of the active material covered by the conductive carbon includes a peak intensity (a) derived from the active material and a peak intensity (b) of D-band derived from the conductive carbon. A peak intensity ratio (b)/(a) between the peak intensity (a) and the peak intensity (b) is 0.25 or more.
Claims10
An electrode comprising an active material and a conductive carbon including oxidized carbon,
- wherein a surface of the active material is covered by the conductive carbon,
- a Raman spectrum of the active material covered by the conductive carbon includes a peak intensity (a) derived from the active material and a peak intensity (b) of D-band derived from the conductive carbon, and
- a peak intensity ratio (b)/(a) between the peak intensity (a) and the peak intensity (b) is 0.25 or more.
A production method of an electrode comprising:
- a first process of adding a conductive carbon including oxidized carbon to a solvent and wet kneading the conductive carbon and the solvent;
- a second process of further adding an active material and wet kneading to obtain a slurry;
- and
- a third process of applying the slurry to a current controller and press molding,
- wherein:
- a surface of the active material is covered by the conductive carbon,
- a Raman spectrum the active material covered by the conductive carbon includes a peak intensity (a) derived from the active material and a peak intensity (b) of D-band derived from the conductive carbon, and
- a peak intensity ratio (b)/(a) between the peak intensity (a) and the peak intensity (b) is 0.25 or more.
Dependencies are inferred from the claim text.