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Home> Articles>News>Discovery Of Li Cell Life — Cheapest Non Chargeable Cylindrical Li-Socl2 Battery

Discovery Of Li Cell Life — Cheapest Non Chargeable Cylindrical Li-Socl2 Battery

From:CTECHI GROUP Limited     Release time:2018-12-05

Overview:According to a paper published in the latest issue of Progress in Science, lithium ion concentration in lithium-ion batteries fluctuates, which explains the shorter life of lithium-ion batteries and is expected to help develop batteries with faster charging and longer standby time.

According to a paper published in the latest issue of Progress in Science, lithium ion concentration in lithium-ion batteries fluctuates, which explains the shorter life of lithium-ion batteries and is expected to help develop batteries with faster charging and longer standby time.


A team led by Brookhaven National Laboratory of the U.S. Department of Energy recently found that when a battery generates current, if the battery's electrodes are made of nanoparticles, the lithium ion concentration in some areas of the nanoparticles increases first and then decreases, rather than increasing as previously thought.


Lattice is a structure in which the particles in the crystal are arranged according to a certain geometric figure. The working principle of lithium ion batteries is that lithium ions move between positive and negative lattices. When charging, lithium ions flow from positive to negative, while discharging is the opposite.


"Similar to sponge water absorption, we see an increasing total concentration of lithium ions in nanoparticles," said Wang Feng, a scientist at the Department of Sustainable Energy Technology at Brookhaven National Laboratory, who led the study. "But unlike water, lithium ions selectively flow out of certain regions, which results in different concentrations of lithium ions between lattices. "Yes."

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Researchers point out that before lithium ion enters the lattice, the lattice structure is very uniform. Once lithium ion enters the lattice, it stretches the lattice, and when lithium ion flows out, the lattice shrinks again. The inhomogeneous movement of lithium ions may cause lasting damage because it distorts the structure of active components in batteries and may lead to fatigue failure of batteries.


Researchers speculate that this phenomenon may also occur in other chemicals of high performance batteries, and the results could help develop batteries with shorter charging time and longer standby time.


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