Molly Ayala
The first electric cell was called the voltaic pile, invented by Italian physicist Alessandro Volta in 1800. It was the first true battery, capable of continuously providing an electric current to a circuit through a chemical reaction. The voltaic pile was built with zinc and copper electrodes separated by an electrolyte, and its invention can be traced back to a disagreement between Volta and fellow scientist Luigi Galvani, who claimed that animals produce electricity.
| Characteristics | Values |
|---|---|
| Name of the first electric cell | Voltaic pile |
| Inventor | Alessandro Volta |
| Year of invention | 1800 |
| Type of cell | Electrochemical battery |
| Function | Produced a continuous electric current |
| Working | Consisted of zinc and copper electrodes separated by an electrolyte |
| When no current was drawn, each zinc/electrolyte/copper cell generated 0.76 V | |
| The voltages from the cells added up, so six cells generated 4.56 V | |
| Improvements | John Frederic Daniell used a second electrolyte to consume the hydrogen produced by the first, solving the hydrogen bubble problem |
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What You'll Learn
The first electric cell was called the 'voltaic pile'
The first electric cell was called the voltaic pile, invented by Italian physicist and chemist Alessandro Volta in 1800. It was the first "true" battery that could continuously provide an electric current to a circuit.
The invention of the voltaic pile was the result of a professional disagreement between Volta and Luigi Galvani, his fellow Italian scientist. Volta believed that the observed electrical phenomena were caused by two different metals joined by a moist intermediary. He experimented with individual cells in series, each cell being a wine goblet filled with brine into which two dissimilar electrodes were dipped. The voltaic pile replaced the goblets with cardboard soaked in brine.
The voltaic pile produced a continuous current and opened two new areas of study: the chemical production of electricity and the effects of electricity on chemicals. The pile caught the imagination of Napoleon Bonaparte, who served as Volta's lab assistant in November 1801.
The use of the voltaic pile enabled a rapid series of other discoveries, including the electrical decomposition (electrolysis) of water into oxygen and hydrogen by William Nicholson and Anthony Carlisle. Humphry Davy showed that the electromotive force, which drives the electric current through a circuit containing a single voltaic cell, was caused by a chemical reaction, not by the voltage difference between the two metals.
Despite its flaws, such as short battery life and the accumulation of hydrogen gas on the surface of the copper electrode, Volta's batteries provided a steadier current than Leyden jars and made many new experiments possible.
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It was invented by Alessandro Volta
The first electric cell was called the voltaic pile, invented by Italian chemist and physicist Alessandro Volta in 1800. It was the first "true" battery, which produced a continuous electric current through a chemical reaction.
Alessandro Volta was born in 1745 in Como, Italy, and studied the chemistry of gases between 1776 and 1778. He became a professor of experimental physics at the University of Pavia in 1779, a position he held for almost 40 years. In 1799, Volta published his experiments with the voltaic pile, which he invented as a result of a professional disagreement with his fellow scientist Luigi Galvani, who had conducted experiments on frogs' legs.
The voltaic pile was built with zinc and copper electrodes separated by an electrolyte. Volta discovered that the most effective pair of dissimilar metals to produce electricity was zinc and copper. Initially, he experimented with individual cells in series, each cell being a wine goblet filled with brine into which the two dissimilar electrodes were dipped. The voltaic pile replaced the goblets with cardboard soaked in brine.
The invention of the voltaic pile enabled a rapid series of other discoveries, including the electrical decomposition (electrolysis) of water into oxygen and hydrogen. It also opened up two new areas of study: the chemical production of electricity and the effects of electricity on chemicals.
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It was the first true battery
The first true battery was the voltaic pile, invented by Italian chemist and physicist Alessandro Volta in 1800. It was the first electrical battery that could continuously provide an electric current to a circuit.
The voltaic pile was built with zinc and copper electrodes separated by an electrolyte. When the cell is providing an electrical current through an external circuit, the metallic zinc at the surface of the zinc anode is oxidised and dissolves into the electrolyte as electrically charged ions (Zn2+), leaving two negatively charged electrons (e-) behind in the metal. This reaction is called oxidation.
At the same time, two positively charged hydrogen ions (H+) from the electrolyte accept two electrons at the copper cathode surface, become reduced and form an uncharged hydrogen molecule (H2). This reaction is called reduction. The electrons used from the copper to form the molecules of hydrogen are made up by an external wire or circuit that connects it to the zinc. The hydrogen molecules formed on the surface of the copper by the reduction reaction ultimately bubble away as hydrogen gas.
The voltaic pile replaced Volta's earlier method of dipping two dissimilar electrodes into wine goblets filled with brine to produce electricity. He determined that the most effective pair of metals to produce electricity was zinc and copper.
The invention of the voltaic pile opened up two new areas of study: the chemical production of electricity and the effects of electricity on chemicals. It also enabled a rapid series of other discoveries, including the electrical decomposition (electrolysis) of water into oxygen and hydrogen by William Nicholson and Anthony Carlisle in 1800.
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It produced a continuous electric current
The first electric cell was called the "voltaic pile", invented by Italian physicist and chemist Alessandro Volta in 1800. The voltaic pile was the first electrical battery that could continuously provide an electric current to a circuit.
The invention of the voltaic pile was the result of a disagreement between Volta and Luigi Galvani, another Italian scientist. Volta believed that observed electrical phenomena were caused by two different metals joined by a moist intermediary, and he set out to prove this through experiments. He built the voltaic pile with a design that differed from the modern design. Volta's piles had one extra disc of copper at the top, in contact with the zinc, and one extra disc of zinc at the bottom, in contact with the copper.
The voltaic pile produced a continuous current through a chemical reaction, marking the beginning of electrochemistry. This continuous current opened up two new areas of study: the chemical production of electricity and the effects of electricity on chemicals.
The voltaic pile's ability to produce a continuous current was due to the chemical reactions occurring within it. Each cell in the pile consisted of zinc, an electrolyte, and copper. When the cell provided an electrical current through an external circuit, the metallic zinc at the surface of the zinc anode was oxidised and dissolved into the electrolyte as electrically charged ions (Zn2+). This left behind two negatively charged electrons (e-) in the metal. These electrons were then used to form hydrogen molecules through a reduction reaction on the surface of the copper cathode.
The voltaic pile's continuous current was a significant improvement over previous methods of storing electrical charge, such as Leyden jars, which released their charge all at once. The voltaic pile's steady current enabled a rapid series of discoveries, including the electrical decomposition (electrolysis) of water and the discovery or isolation of several chemical elements.
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It was made of zinc, electrolyte and copper
The first electric cell was called the voltaic pile, invented by Italian physicist and chemist Alessandro Volta in 1800. It was the first "true" battery, as it could continuously provide an electric current to a circuit. The voltaic pile was made of zinc, electrolyte, and copper.
The voltaic pile was made of a series of individual cells, each consisting of zinc, electrolyte, and copper. The zinc and copper were in the form of discs, with one extra disc of copper at the top in contact with the zinc, and one extra disc of zinc at the bottom in contact with the copper. The electrolyte was a brine solution.
When the voltaic pile was providing an electrical current, the metallic zinc at the surface of the zinc anode was oxidized and dissolved into the electrolyte as electrically charged ions (Zn2+), leaving behind two negatively charged electrons (e−) in the metal. This reaction is called oxidation. At the same time, two positively charged hydrogen ions (H+) from the electrolyte accepted two electrons at the copper cathode surface, became reduced, and formed an uncharged hydrogen molecule (H2). This reaction is called reduction.
The electrons used to form the hydrogen molecules on the surface of the copper came from an external wire or circuit that connected it to the zinc. These molecules ultimately bubbled away as hydrogen gas. This accumulation of hydrogen gas on the surface of the copper electrode could form a barrier between the metal and the electrolyte solution, reducing the power of the cell over time.
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Frequently asked questions
The first electric cell was called the voltaic pile.
The voltaic pile was invented by Italian chemist and physicist, Alessandro Volta.
The voltaic pile was invented in 1800.
The voltaic pile consists of zinc and copper electrodes separated by an electrolyte. When the cell provides an electrical current through an external circuit, the metallic zinc at the surface of the zinc anode is oxidised and dissolves into the electrolyte as electrically charged ions.
