INTERNATIONAL JOURNAL of RENEWABLE ENERGY RESEARCH A. Susanto et al. ,Vol. 7, No. 1, 2017 Performance of Zn-Cu and Al-Cu Electrodes in Seawater Battery at Different Distance and Surface Area Adi Susanto*‡, Mulyono Sumitro Baskoro**, Sugeng Hari Wisudo***, Mochammad Riyanto****, Fis Purwangka***** *Department of Fisheries, Faculty of Agriculture, University of Sultan Ageng Tirtayasa, Jl. Raya Jakarta Km. 4 Pakupatan Serang Banten Indonesia, 42118; Marine Fisheries Technology, Department of Fisheries Resources Utilization, Faculty of Fisheries and Marine Science, Bogor Agricultural University, Jl. Agathis Kampus IPB Dramaga Bogor Jawa Barat Indonesia, 16680 **Department of Fisheries Resources Utilization, Faculty of Fisheries and Marine Science, Bogor Agricultural University, Jl. Agathis Kampus IPB Dramaga Bogor Jawa Barat Indonesia, 16680 ***Department of Fisheries Resources Utilization, Faculty of Fisheries and Marine Science, Bogor Agricultural University, Jl. Agathis Kampus IPB Dramaga Bogor Jawa Barat Indonesia, 16680 ****Department of Fisheries Resources Utilization, Faculty of Fisheries and Marine Science, Bogor Agricultural University, Jl. Agathis Kampus IPB Dramaga Bogor Jawa Barat Indonesia, 16680 *****Department of Fisheries Resources Utilization, Faculty of Fisheries and Marine Science, Bogor Agricultural University, Jl. Agathis Kampus IPB Dramaga Bogor Jawa Barat Indonesia, 16680 (adisusanto@untirta.ac.id, baskoro.mul@gmail.com, wisudo1966@gmail.com, fis_tli@yahoo.com) ‡ Corresponding Author; Adi Susanto, 42118, Tel: +62 254 280 330, Fax: +62 254 828 5293, adisusanto@untirta.ac.id Received: 02.11.2016 Accepted:15.12.2016 Abstract- Seawater battery is one of the green electricity sources to fulfil energy need for electrical equipment, especially in the coastal area and fishing activity. The application of this technology is still limited because of the high cost in the electrode production. This study analyzed the performance of Zn-Cu and Al-Cu electrode as cheap material to generate electricity from sea water in the different distance and surface area. The results shown zinc anode produced higher voltage and current than aluminium anode with number of 839 mV and 1.75 mA respectively. Increasing of surface area at the same distance was increase the current output for each material. Distance of electrode was affected to the current density, but it causes fluctuation at the voltage. Application of zinc anode with higher surface area and short distance generate high voltage and current output in the salt water battery. Keywords: Anode, battery, cathode, electricity, seawater. 1. Introduction The sustainable energy is one of the key challenges in the modern society and the important part of science and technology development. The performance of sustainable energy technology can be improved to empower the more efficient utilization of renewable electricity sources [1]. Seawater is an important alternative power source to generate low cost and green electricity for several needs. The development of seawater batteries is conducted to enable the