Daniell cell battery
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Daniell cell battery
Daniell cell. Invented by the British chemist John Frederic Daniell (1790-1845), the Daniell cell (left) is made from two half-cells, the electrolytes of which are separated by a porous partition. The positive electrode is copper immersed in copper sulphate solution, the negative electrode is zinc immersed in dilute sulphuric acid. Zinc ions migrate across the porous partition, continuously forming zinc sulphate, while copper is plated out onto the copper electrode. It is the movement of ions which creates the electrical current of about 1.1 volts, which can be measured with a voltmeter (right)
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Media ID 6435315
© ANDREW LAMBERT PHOTOGRAPHY/SCIENCE PHOTO LIBRARY
Battery Conduction Copper Electrical Electricity Electrochemical Electrochemistry Electrode Electrodes Electrolyte Electrolytes Energy Ions Sulphate Sulphuric Acid Voltage Zinc
EDITORS COMMENTS
This print showcases the remarkable Daniell cell battery, a groundbreaking invention by British chemist John Frederic Daniell. The image captures two half-cells of this ingenious device, with a porous partition separating their electrolytes. On the left side, we observe the positive electrode made of copper immersed in copper sulphate solution, while on the right side lies the negative electrode composed of zinc submerged in dilute sulphuric acid. The mesmerizing aspect of this battery lies in its ability to generate electrical current through ion movement. As zinc ions migrate across the porous partition, they continually form zinc sulphate, while simultaneously copper is plated out onto the copper electrode. This intricate process creates an electric current measuring approximately 1.1 volts—a phenomenon that can be precisely measured using a voltmeter as depicted on the right-hand side. This photograph not only highlights key components such as copper and zinc electrodes but also emphasizes crucial scientific concepts like conduction and electrochemistry. It serves as a testament to how advancements in technology have revolutionized our lives by harnessing energy efficiently and effectively. With its rich historical significance and profound impact on various industries reliant on batteries for power supply, this image encapsulates both scientific curiosity and industrial progress. Science enthusiasts will undoubtedly appreciate this visual representation of one of chemistry's most influential creations—the Daniell cell battery—captured beautifully by Science Photo Library without any commercial context mentioned or intended.
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