ELECTRODE, POWER STORAGE DEVICE, AND METHOD FOR MANUFACTURING ELECTRODE

• Main Authors: KOMAGATA SHOGO, KUMAGAI HITOSHI, OGIWARA NOBUHIRO, NAGAMEGURI NAOYUKI, HASEGAWA MASAKI
• Format: Patent
• Language: English; Japanese
• Published: 27.09.2023
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY

To provide novel electrodes, power storage devices, and methods for manufacturing electrodes, capable of further improving output characteristics.SOLUTION: A power storage device includes a positive electrode, a negative electrode, and an ion conducting medium. The negative electrode includes a mixed salt structure including an alkali metal element layer and an organic skeleton layer containing two or more aromatic dicarboxylic acid anions. When, in a Raman spectrum, an average intensity at a Raman shift in the range of 250-350 cm-1 is represented as a reference intensity Istd, a value obtained by normalizing a peak intensity Ik at a Raman shift k[cm-1] by the reference intensity Istd is represented as a normalized intensity Sk, and a value obtained by multiplying the inverse number of the normalized intensity Sk by 1,000 is represented as a figure of merit Rk, one or more of the following: the value of R785 is 20 or more and 70 or less; the value of R1118 is 100 or more and 500 or less; the value of R1400 is 20 or more and 70 or less; the value of R1485 is 50 or more and 200 or less; and the value of R1633 is 20 or more and 60 or less are satisfied.SELECTED DRAWING: Figure 2 【課題】出力特性をより向上することができる新規な電極、蓄電デバイス及び電極の製造方法を提供する。【解決手段】蓄電デバイスは、正極と、負極と、イオン伝導媒体とを備えている。負極は、２種以上の芳香族ジカルボン酸アニオンを含む有機骨格層と、アルカリ金属元素層と、を備える混合塩構造体を含み、ラマンスペクトルにおいて、ラマンシフトが２５０～３５０ｃｍ-1の範囲での平均強度を基準強度Ｉstdとし、ラマンシフトｋ［ｃｍ-1］でのピーク強度Ｉkを基準強度Ｉstdで規格化した値を規格化強度Ｓkとし、規格化強度Ｓkの逆数に１０００を乗じた値を性能指数Ｒkとしたときに、Ｒ785の値が２０以上７０以下、Ｒ1118の値が１００以上５００以下、Ｒ1400の値が２０以上７０以下、Ｒ1485の値が５０以上２００以下、Ｒ1633の値が２０以上６０以下のうちの１以上を満たす。【選択図】図２