Three students of the Department of Chemistry Sepuluh Nopember Institute of Technology (ITS) Surabaya, namely Febrilia Agar Pramesti, Abduh Muharram Chairacita, and Princess Augista Nur Azizah created a gel battery utilizing tomato juice as a substitute for harmful chemicals in the battery.
The director of the work of innovation, Randy Yusuf Kurniawan in Surabaya, said in the composition, the battery has electrolytes (chemicals) are harmful to the environment, such as lithium and lead. Moreover, if the substance reacts will cause explosion and poisoning in the body.
"The tomato-acidic fruit is measured in its acidity through vitamin C levels and produces 10-40 milligrams of vitamin C per 100 grams of tomato, which is raw tomatoes until cooked by taking the tomato juice first by juicing and then tested," he said.
He explained, acid as a source of protons, when it reacts with electrodes to produce electrons that flow into the outer circuit so that the flow of electricity occurs.
"However, the tomato juice is still a liquid, in which the liquid electrolyte produces a small electrical voltage," he said.
Consequently before assembled into a battery, tomato extract is added biopolymer in the form of agarose to become gel-shaped electrolyte. The addition of agarose is capable of increasing the density or electrolyte density.
"Electrolyte meetings make the value of the high voltage becomes high," said the graduate student from Surabaya ITS.
Meanwhile, the group's leader, Febrilia Agar Pramesti, said the resulting and generated voltage is 1 volt by giving the treatment through the ratio of tomato juice volume and aqueous agarose of 1: 2. As for the dilute agarose itself is made by dissolving the biopolymer agarose into water with a volume ratio of 1: 3.
"The value of 1 volt voltage generated is only on a small scale, it could be if the scale up or scale scale enlargement, the voltage on the battery gel will be bigger," he said.
The tomato gel batteries are also rated by the team as capable of producing very stable voltages and currents.
"We run the battery for 30 minutes, the voltage becomes 0.985 volts, only 0.015 volts difference alone, this difference is very difficult to obtain in general battery research," said Febri.
Through this innovation, the team hopes the battery gel from tomatoes can be used by the community as an environmentally friendly battery, and able to deliver his team to escape the fight in the arena of the National Student Scientific Week (Pimnas) to-31 which will be held next August in Yogyakarta
The director of the work of innovation, Randy Yusuf Kurniawan in Surabaya, said in the composition, the battery has electrolytes (chemicals) are harmful to the environment, such as lithium and lead. Moreover, if the substance reacts will cause explosion and poisoning in the body.
"The tomato-acidic fruit is measured in its acidity through vitamin C levels and produces 10-40 milligrams of vitamin C per 100 grams of tomato, which is raw tomatoes until cooked by taking the tomato juice first by juicing and then tested," he said.
He explained, acid as a source of protons, when it reacts with electrodes to produce electrons that flow into the outer circuit so that the flow of electricity occurs.
"However, the tomato juice is still a liquid, in which the liquid electrolyte produces a small electrical voltage," he said.
Consequently before assembled into a battery, tomato extract is added biopolymer in the form of agarose to become gel-shaped electrolyte. The addition of agarose is capable of increasing the density or electrolyte density.
"Electrolyte meetings make the value of the high voltage becomes high," said the graduate student from Surabaya ITS.
Meanwhile, the group's leader, Febrilia Agar Pramesti, said the resulting and generated voltage is 1 volt by giving the treatment through the ratio of tomato juice volume and aqueous agarose of 1: 2. As for the dilute agarose itself is made by dissolving the biopolymer agarose into water with a volume ratio of 1: 3.
"The value of 1 volt voltage generated is only on a small scale, it could be if the scale up or scale scale enlargement, the voltage on the battery gel will be bigger," he said.
The tomato gel batteries are also rated by the team as capable of producing very stable voltages and currents.
"We run the battery for 30 minutes, the voltage becomes 0.985 volts, only 0.015 volts difference alone, this difference is very difficult to obtain in general battery research," said Febri.
Through this innovation, the team hopes the battery gel from tomatoes can be used by the community as an environmentally friendly battery, and able to deliver his team to escape the fight in the arena of the National Student Scientific Week (Pimnas) to-31 which will be held next August in Yogyakarta
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