ELECTROCHEMICAL DEVICE WITH EFFICIENT ION EXCHANGE MEMBRANES

An electrochemical device comprises: a first type of membrane disposed between first and second reservoirs containing an input solution; and a second type of membrane disposed between a first redox-active electrolyte chamber and the first reservoir and between a second redox-active electrolyte chamb...

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Bibliographische Detailangaben
Hauptverfasser: MAHATI CHINTAPALLI, EUGENE S. BEH, FRANCISCO E TORRES, MICHAEL BENEDICT
Format: Patent
Sprache:eng ; kor
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Zusammenfassung:An electrochemical device comprises: a first type of membrane disposed between first and second reservoirs containing an input solution; and a second type of membrane disposed between a first redox-active electrolyte chamber and the first reservoir and between a second redox-active electrolyte chamber and the second reservoir, and different from the first type. The first type of membrane and one of the second type of membranes form a membrane pair, wherein the pair has an area specific resistance below y = 5065.3x^3 - 1331.1x^2 + 90.035x + 39 Ohm cm^2 when the pair is equilibrated in an electrolyte and for at least part of a range of 0 < x < 0.4, and x is the mass fraction of salt in the electrolyte. The present invention can optionally store energy. 전기화학 장치는 투입 용액을 함유하는 제1 저장소와 제2 저장소 사이에 배치된 제1 유형의 막, 및 제1 산화환원-활성 전해질 챔버와 제1 저장소 사이에 배치된 그리고 제2 산화환원-활성 전해질 챔버와 제2 저장소 사이에 배치된, 제1 유형과는 상이한 제2 유형의 막을 포함한다. 제1 유형의 막과 하나의 제2 유형의 막은 막 쌍을 형성하고, 쌍이 전해질 중에서 평형화될 때 그리고 0 < x < 0.4인 범위의 적어도 일부에 대해 쌍은 y = 5065.3x3 - 1331.1x2 + 90.035x + 39 Ohm ㎠ 미만의 면적 비저항(area specific resistance)을 갖고, x는 전해질 내의 염의 질량 분율이다.