negatiivikalvot

Negatiivikalvot, also known as negative electrodes or cathodes, are a crucial component in various electrochemical systems, including batteries and electrolytic cells. They are typically made from materials that can readily accept electrons, facilitating the reduction of positively charged ions during the electrochemical process. In batteries, the negative electrode is where reduction occurs, releasing electrons that flow through an external circuit to the positive electrode, generating electrical energy. Common materials used for negative electrodes include lithium, sodium, and various alloys, depending on the type of battery. In electrolytic cells, the negative electrode attracts positively charged ions, which are then reduced to form the desired product. The performance and lifespan of electrochemical devices are significantly influenced by the properties of the negative electrode, such as its electronic conductivity, chemical stability, and ability to accommodate the volume changes that occur during charge and discharge cycles. Advances in negative electrode materials and designs are ongoing, aiming to improve the energy density, power density, and cycle life of batteries and electrolytic cells.