Do You Know A Great Advance in Lithium Battery Technology
Lithium batteries are made in two different types.One is the lithium metal battery which is manufactured using lithium metal.This is not rechargeable and can be used to replace alkaline batteries in your electronic devices.It is particularly handy in the very popular AA size which powers so many devices.Lithium batteries have much longer life and higher capacity then alkaline batteries.The other type is the lithium ion battery.This is made from lithium compounds rather than the metal itself.These compounds are much more stable than lithium metal and provide an excellent power source which can be recharged at least 500 times.
Lithium ion batteries are more expensive than alkaline or lithium metal varieties but due to the fact that they can be recharged so many times they are in fact very economical.Lithium ion batteries are smaller and lighter than other rechargeables and run at a higher voltage.As a result of the higher voltage many devices can be powered with only one lithium battery,rather than using several of lower voltage.They will also will keep their charge for longer periods and can remain at a high charge level for a number of months.They can be used in any electronic device which uses alkaline batteries and will last longer.Some cells use two half-cells with different electrolytes.A separator between half-cells allows ions to flow but prevents mixing of the electrolytes.
Due to their complex construction,and smaller manufacturing numbers,lithium ion rechargeables are considerably more costly than most others.It is likely that this price will become lower as popularity increases and manufacturing volumes rise.They are not manufactured in the popular AA,C and D sizes.The reason for this is that they are made in a range of different shapes and sizes to fit particular devices.Each then requires its own special charger.They are not available in standard sizes due to the fact that they must not be recharged with standard battery chargers which are different in voltage.Standard lithium metal batteries are made in the normal AA,C and D sizes,and can be used to power any device which uses these sizes.They have long shelf life and long usage life and are excellent power sources.
A battery is a device that converts chemical energy directly to electrical energy.It consists of a number of voltaic cells;each voltaic cell consists of two half-cells connected in series by a conductive electrolyte containing anions and cations.One half-cell includes electrolyte and the electrode to which anions (negatively charged ions) migrate,i.e.,the anode or negative electrode;the other half-cell includes electrolyte and the electrode to which cations (positively charged ions) migrate,i.e.,the cathode or positive electrode.In the redox reaction that powers the battery,cations are reduced (electrons are added) at the cathode,while anions are oxidized (electrons are removed) at the anode.The electrodes do not touch each other but are electrically connected by the electrolyte.
Batteries store electricity in a chemical form,inside a closed-energy system.They can be re-charged and re-used as a power source in small appliances,machinery and remote locations.Advances in battery technology may one day help to solve our energy crisis.The articles on this page explore advances in battery power technologies.Many materials can be used as positive ions in batteries,but lithium has become popular in recent years because it is light and,weight for weight,lithium batteries thus store more energy than any other kind.Before that,nickel-metal hydride batteries were preferred for many applications.Even now,they are cheaper than lithium battery and they,too,are still widely used.Dr Braun therefore decided to have a go at making rapidly chargeable versions of both.
Article From: http://www.batteryfaq.net/battery-news/do-you-know-a-great-advance-in-lithium-battery-technology-2196.html
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