Nowadays Every mobile comes with lithium ion battery, we need to charge it atleast once a day Regarding this, Researchers developed a battery that can perform far better than our lithium batteries.
Have you ever think about a battery that only need to charge once a week?
Honda, NASA, & Caltech three companies researchers joined together and solved the major problem by creating a new liquid electrolyte they call BTFE.
This is not first development, In the 1970’s, solid-state fluoride batteries were developed but they require temperatures so high that they can’t be used in everyday devices. Still, the promise was exciting enough for scientists to keep investigating them.
Do you know one thing? Fluoride battery can perform 8 times better than a lithium-ion battery, it can pack more charge in less space.
said by co-author Professor Robert Grubbs, Caltech chemist and a winner of the 2005 Nobel Prize in Chemistry.
“Fluoride batteries can have a higher energy density, which means that they may last longer – up to eight times longer than batteries in use today,”
The main problem is fluoride can be challenging to work with, in particular because it’s so corrosive and reactive.
“For a battery that lasts longer, you need to move a greater number of charges,” co-author Simon Jones, from the Jet Propulsion Laboratory. “Moving Multiple charged metal cations is difficult, but a similar result can be achieved by moving several singly charged anions, which travel with comparative ease. The challenges with this scheme are making the system work at useable voltages. In this new study, we demonstrate that anions are indeed worthy of attention in battery science since we show that fluoride can work at high enough voltages.”
How Fluoride batteries work
lithium ion battery having an anode, cathode separated by an electrolyte As the battery discharges LI+ ions move from anode through an electrolyte to cathode but in Fluoride batteries, it’s different instead of moving positive lithium ions here moving of negative fluoride ions from cathode generate current.
The reason these batteries have such a high energy density comes down to the molecular structure of metal fluorides. In a metal fluoride, the ratio of fluorine atoms to metal atoms is high. For example in copper fluoride, two fluorine atoms are combined with just one copper atom. That means for every copper atom, you get two fluoride ions that can move 2 electrons. In a typical lithium battery, however, you only get 1 lithium atom for every two oxygens 1 cobalt. That means for every two oxygen atoms and 1 cobalt atom there’s only one lithium ion, that can only move 1 electron. The copper fluoride gives you more ions that can move more electrons– and does it without increasing overall mass. That means batteries of the same weight can hold more charge, and last up to 8 times longer.
The breakthrough is reported in the journal Science.
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