batteries - Uma visão geral
batteries - Uma visão geral
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Yes, most batteries are recyclable. This however depends on the type of battery. Some of the most common types of batteries that can be recycled and have their materials recovered are:
That represents the versatility of energy storage systems—better known as batteries—that scientists are developing today.
While lithium-ion and sodium-ion batteries are commonly used in consumer electronics and are commercialized for use in electric vehicles, scientists are exploring an array of other chemistries that may prove to be more effective, last longer, and are cheaper than those in use today.
Batteries and similar devices accept, store, and release electricity on demand. Batteries use chemistry, in the form of chemical potential, to store energy, just like many other everyday energy sources. For example, logs and oxygen both store energy in their chemical bonds until burning converts some of that chemical energy to heat. Gasoline and oxygen mixtures have stored chemical potential energy until it is converted to mechanical energy in a car engine. Similarly, for batteries to work, electricity must be converted into a chemical potential form before it can be readily stored. Batteries consist of two electrical terminals called the cathode and the anode, separated by a chemical material called an electrolyte. To accept and release energy, a battery is coupled to an external circuit.
The chemicals inside the cell (alkaline or lithium) begin a reaction to produce the ions and electrons that power anything attached to the battery.
In this article, you will learn about different types of batteries with their working & applications are explained with Pictures.
The positive and negative terminals of a battery are made of metal, usually lead or copper. The terminals are connected to the battery’s electrodes, which are made of materials that can conduct electricity.
Disposing of a battery via incineration may cause an explosion as steam builds up within the sealed case.
Batteries work by converting chemical energy into electrical energy. This process is known as electrochemical oxidation-reduction or redox. When a battery is in use, the chemical reaction produces electrons, which flow through the battery to power the attached device.
, in strict usage, designates an assembly of two or more galvanic cells capable of such energy conversion, it is commonly applied to a single cell of this kind.
Every battery (or cell) has a cathode, or positive plate, акумулатори цена and an anode, or negative plate. These electrodes must be separated by and are often immersed in an electrolyte that permits the passage of ions between the electrodes. The electrode materials and the electrolyte are chosen and arranged so that sufficient electromotive force (measured in volts) and electric current (measured in amperes) can be developed between the terminals of a battery to operate lights, machines, or other devices.
These types of batteries remain active until the power runs out, usually about three years. Benefits of this battery include flat discharge voltage, safety environmental benefits, and low cost.
With regards to anodes, a number of chemistry changes have the potential to improve energy density (watt-hour per kilogram, or Wh/kg). For example, silicon can be used to replace all or some of the graphite in the anode in order to make it lighter and thus increase the energy density.
Batteries supply DC current which can only flow one way – negative to positive. A battery is made up of three main components: