1945年美國貝爾實驗室設計、通用電氣公司製造出以鎂為陽極，氯化銀為陰極之海水電池作為魚雷電源及照明設備。但由於氯化銀成本昂貴且有汙染海洋的情況，陸陸續續有許多不具銀成份的材料被研究做為替代的海水電池陰極。我們承襲這樣的想法，去設計一個穩定而無汙染的海水電池。
承前學長姐在電池陰極與電池水流循環之研究，我們選定鎳為陰極板來解決成本及汙染之問題。於本研究中，首要提高單位空間內的電流輸出量，必然優先縮短陰極與楊極之間的距離，然而距離過小的時電極板可能會因為接觸而造成短路，故加入間隔物於海水電池陰極陽極間，一方面提升海水電池之空間使用率另一方面也可以解決陰陽電極接觸短路的問題。此外完整海水電池系統中需要通以水流循環解決氫氧化鎂沉澱以及氧氣消耗之問題，本實驗設計一個以海水電池本身產出的之電流驅動馬達達到水流循環，以串並聯方式觀察其放電表現。最後，我們藉由增加金屬反應面積來提升電流，並且以定電流放電測試其壓降表現。

In 1945, Nokia Bell Labs and GM developed seawater powering module (seawater battery) using Mg as anode and AgCl as cathode. Eco-issue then arises due to chemical composition of cathode. Therefore, Ag-free materials have been tested and, based on previous research, we designed a stable seawater battery with cathode highly resistance to oxidation. In order to enhance output performance, we upgrade seawater cell in three aspects. First, suitable materials are selected as anode and cathode. Second, seawater is recycled. Third, seawater cells are arranged for an optimal output of power.

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