ELECTRODE FOR ELECTRIC DOUBLE LAYER CAPACITOR, AND ELECTRIC DOUBLE LAYER CAPACITOR

To provide an electric double layer capacitor having a desired capacitance and low impedance.SOLUTION: An electric double layer capacitor according to the present invention includes a current collector, and an electrode layer formed on the current collector, the electrode layer includes an active ma...

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Bibliographische Detailangaben
Hauptverfasser: TAKAI MITSURU, HINOKI YOSHINORI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide an electric double layer capacitor having a desired capacitance and low impedance.SOLUTION: An electric double layer capacitor according to the present invention includes a current collector, and an electrode layer formed on the current collector, the electrode layer includes an active material (A), a conductive auxiliary agent (B), and a binder (C), and the active material (A) is graphene or graphene oxide. The weight ratio (A:B) of the active material (A) to the conductive auxiliary agent (B) is 1:99 to 50:50, and the weight ratio ((A+B):C) of the total (A+B) of the active material (A) and the conductive auxiliary agent (B), and the binder (C) is 90:10 to 65:35.SELECTED DRAWING: Figure 1 【課題】所望の静電容量かつ低インピーダンスである電気二重層キャパシタを提供する。【解決手段】本発明の電気二重層キャパシタは、集電体と、前記集電体上に形成された電極層と、を有し、前記電極層が、活物質(A)と導電助剤(B)とバインダー(C)とを含み、前記活物質(A)がグラフェンもしくは酸化グラフェンである。前記活物質(A)と前記導電助剤(B)との重量比率(A:B)が1:99〜50:50であり、かつ、前記活物質(A)と前記導電助剤(B)との合計(A+B)、と前記バインダー(C)との重量比率((A+B):C)が90:10〜65:35である。【選択図】図1