Secondary cell containing organic-inorganic hybrid nanoporous materials as water adsorbent

The present invention relates to a secondary battery in which an electrode assembly including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, together with an electrolyte, is contained inside a battery case. In the sec...

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Bibliographische Detailangaben
Hauptverfasser: LEE, U HWANG, HWANG, DONG WON, LEE, SUE KYUNG, HONG, DO YOUNG, CHANG, JONG SAN, HWANG, YOUNG KYU, CHO, KYUNG HO
Format: Patent
Sprache:eng ; kor
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Zusammenfassung:The present invention relates to a secondary battery in which an electrode assembly including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, together with an electrolyte, is contained inside a battery case. In the secondary battery, first organic-inorganic hybrid nanoporous materials in which 80% or more of the total amount of adsorbed moisture can be separated at a temperature equal to or lower than 150C and thus regeneration is possible and, optionally, second organic-inorganic hybrid nanoporous materials in which when relative humidity p/p_0 is equal to or lower than 0.3, moisture adsorption capability is greater than moisture separation capability (wherein p_0 is saturated vapor pressure at applicable temperature, and p is vapor pressure during adsorption) are provided as water adsorbents in one or more portions selected from the group consisting of the positive electrode, the negative electrode, the separator, the electrolyte, and the inside of the battery case. 본 발명은 양극, 음극, 상기 양극과 음극 사이에 개재되는 분리막을 포함하는 전극조립체가 전해액과 함께 전지케이스의 내부에 내장되어 있는 이차전지로서, 상기 양극, 음극, 분리막, 전해액 및 전지 케이스 내부로 이루어진 군으로부터 선택되는 하나 이상의 부위에 수분 흡착제로, 흡착된 수분의 흡착 총량의 80% 이상의 탈착이 150℃ 이하에서 이루어져 재생이 가능한 제1 유무기 하이브리드 나노세공체(organic-inorganic hybrid nanoporous materials); 및 선택적으로 상대 습도 p/p가 0.3 이하일 때, 수분 흡착능이 수분 탈착능보다 더 큰 제2 유무기 하이브리드 나노세공체(이 때 p는 적용 온도에서의 포화 증기압, p는 흡착 시의 증기압을 나타냄)를 포함하는 것이 특징인 이차전지를 제공한다.