Chemical Battery
Tuesday, February 23rd, 2010Chemical batteries, is through the electrochemical reaction, the positive, the negative electrode active material of the chemical energy into electrical energy a class of devices. After long-term research, development, ushered in a wide variety of chemical batteries, widely used in the situation. As large as a building can only accommodate a lot, the great device, small enough to count the species in millimeters. All the time is not a better life for our service. The development of modern electronic technology, chemical batteries made very high demands. Each chemical battery technology breakthroughs have brought a revolutionary electronic device development. Modern society, people, daily life, the more and more inseparable from the chemistry of the battery. Now many electrochemical scientists focus their interest as a chemical battery powered electric car field.
Dry and liquid Inspiron 6400 battery,Inspiron 640m batteryThe distinction between dry and liquid cells is limited to the period of early cell development. The first battery from the glass container filled with electrolyte and two electrodes. Was launched in order to paste electrolyte-based batteries, also known as dry batteries.
There are still “liquid” batteries. Size is generally a very large variety. Such as those used as an uninterruptible power supply in large stationary lead-acid batteries or solar cells supporting the use of lead-acid batteries. For mobile devices, some using a full-sealed, maintenance-free lead-acid batteries, these batteries have been used successfully for many years in which the electrolyte sulfuric acid is fixed by the silica gel or glass fiber separator suction pay.
Disposable batteries and rechargeable batteries
Disposable batteries commonly known as “disposable” batteries, because their power runs out, you can not recharge using only discarded. Common disposable batteries, including alkaline manganese batteries, zinc-manganese batteries, lithium batteries, zinc batteries, zinc air batteries, zinc-mercury batteries, mercury batteries, battery and magnesium hydroxide, manganese batteries.
Rechargeable battery according to production materials and processes on different common are lead-acid batteries, nickel-cadmium batteries, nickel-iron batteries, nickel-metal hydride batteries, lithium-ion battery. The advantage is a long cycle life, which can be more than 200 full charge and discharge, and some rechargeable batteries power the load higher than most of the disposable batteries. Ordinary Ni-Cd, Ni-MH battery, the unique memory effect, causing inconvenience to use, often cause early failure.
Theory of battery charge time
The theory of the battery charge time: battery charger power divided by the output current.
For example: a battery 800MAH Inspiron E1405 battery,Inspiron E1505 battery for example, the charger output current 500MA then charging time is equivalent to 800MAH/500MA = 1.6 hours, when the charger shows charging is completed, preferably about half an hour or so should be given to the battery the complement of power-up time.
Fuel Cell
Fuel cell is a fuel’s chemical energy through electrochemical reaction into electrical energy directly to the device is the use of hydrogen fuel cell the anode is carried out by oxidation of hydrogen oxidation of hydrogen ions, while the oxygen reduction reaction carried out at the cathode, and coming from the anode generates hydrogen ions with the water. Oxidation-reduction reaction process can generate electricity. Fuel cell technology, including the existence, in alkaline fuel cell (AFC), phosphoric acid fuel cell (PAFC), proton exchange membrane fuel cell (PEMFC), molten carbonate fuel cell (MCFC), solid oxide fuel cell (SOFC), as well as the direct methanol fuel cell (DMFC), etc., of which the use of methanol oxidation as a positive response to fuel cell technology, but is optimistic about the industry and positive developments.
