ELECTRODE, MANUFACTURING METHOD OF THIS ELECTRODE, AND POWER STORAGE DEVICE WITH THIS ELECTRODE

• Main Authors: ISHIMOTO SHUICHI, KUBOTA SATOSHI
• Format: Patent
• Language: English; Japanese
• Published: 21.11.2019
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a power storage device with an excellent cycle life, an electrode used for the power storage device, and a manufacturing method of the electrode.SOLUTION: An electrode comprises: an active material; and a conducive carbon containing a carbon to be processed with an oxidation treatment. A front surface of the active material is covered with the conducive carbon. A Raman spectrum of the active material to be covered with the conducive carbon contains a peak intensity (a) derived from the active material and a peak intensity (b) of a D band derived from the conductive carbon. A peak intensity ratio (b)/(a) of the peak intensity (a) and the peak intensity (b) is 0.25 or more.SELECTED DRAWING: Figure 2 【課題】良好なサイクル寿命を有する蓄電デバイス、この蓄電デバイスに用いられる電極、及びこの電極の製造方法の提供。【解決手段】活物質と、酸化処理されたカーボンを含む導電性カーボンと、を備え、前記活物質の表面は前記導電性カーボンで覆われ、前記導電性カーボンで覆われた前記活物質のラマンスペクトルは、前記活物質由来のピーク強度（ａ）と、前記導電性カーボン由来のＤバンドのピーク強度（ｂ）と、を含み、前記ピーク強度（ａ）と前記ピーク強度（ｂ）のピーク強度比（ｂ）／（ａ）が、０．２５以上であること、を特徴とする電極。【選択図】図２