To provide a power storage device which can increase the reliability.SOLUTION: A power storage device 10 comprising an exterior member 20 having a barrier layer 36, and a power storage element 11 sealed in the exterior member is to be installed in an electrically-driven automobile 1. The exterior member 20 has a peripheral seal part 21 and a receiving part 16 for the power storage element 11. A depth direction of the receiving part 16 and X direction orthogonal to the depth direction are set in a front-back direction or right-left direction of the electrically-driven automobile 1. Y direction which is perpendicular to the depth direction of the receiving part 16 and X direction is set in a height direction of the electrically-driven automobile 1. The exterior member has a corrosion resistant coating on at least one surface of the barrier layer 36. According to analysis by time-of-flight secondary ion mass spectrometry about the corrosion resistant coating, the ratio Pof a peak intensity Poriginating from POto a peak intensity Poriginating from CePOfalls within a range of 80-120, or the ratio Pof a peak intensity Poriginating from POto the peak intensity Pfalls within a range of 90-150.SELECTED DRAWING: Figure 3

    【課題】信頼性を向上できる蓄電デバイスを提供する。【解決手段】バリア層36を有した外装部材20に蓄電素子11を封入し、電動自動車1に搭載される蓄電デバイス10において、外装部材20が周縁シール部21と蓄電素子11の収納部16とを有し、収納部16の深さ方向及び深さ方向に直交するX方向が電動自動車1の前後方向または左右方向に配置され、収納部16の深さ方向及びX方向に垂直なY方向が電動自動車1の高さ方向に配置され、バリア層36の少なくとも一表面に耐食性皮膜を備え、耐食性皮膜について飛行時間型2次イオン質量分析法を用いて分析した場合に、CePO4-に由来するピーク強度PCePO4に対するPO3-に由来するピーク強度PPO3の比PPO3/CePO4が、80〜120の範囲内、またはピーク強度PCePO4に対するPO2-に由来するピーク強度PPO2の比PPO2/CePO4が、90〜150の範囲内である。【選択図】図3


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    Title :

    POWER STORAGE DEVICE, EXTERIOR MEMBER FOR POWER STORAGE DEVICE, POWER STORAGE DEVICE AGGREGATE, ELECTRICALLY-DRIVEN AUTOMOBILE AND MANUFACTURING METHOD OF POWER STORAGE DEVICE


    Additional title:

    蓄電デバイス、蓄電デバイス用外装部材、蓄電デバイス集合体、電動自動車及び蓄電デバイスの製造方法


    Contributors:

    Publication date :

    2020-08-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01G Kondensatoren , CAPACITORS / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY