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The positive ions were joined with a single

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    August 11, 2018 2:42 PM HKT

    LOS ANGELES Nike Epic React Flyknit Pearl Pink Womens , Oct. 28 (Xinhua) -- A team of researchers in the United States has shown it is possible to improve conductivity and safety in lithium-ion batteries, which are used to power many electronic devices around the world, including laptops, iPods, satellites, artificial hearts and cell phones.


    The work, by researchers from Virginia Commonwealth University Nike Epic React Flyknit Mens Sale , was detailed in a study published recently in the Proceedings of the National Academy of Sciences.


    "Theoretically, you can have your cake and eat it too, when it comes to the stability and conductivity," Puru Jena, a distinguished professor in the Department of Physics in the College of Humanities and Sciences, was quoted as saying in a news release.


    Instability in lithium-ion batteries due to liquid-state electrolytes that help carry charges from one battery electrode to another is one hazard scientists can prevent, researchers say.


    Despite this instability Cheap Nike Epic React Flyknit Mens , compared to more stable solid-state electrolytes, liquid-state electrolytes are commonplace in lithium-ion batteries due to their conductive superiority.


    However, the new theoretical studies has shown it is possible to design solid-state electrolytes not only to be as conductive as their liquid counterparts but also very stable.


    Electrolytes, which are central to a battery, are salts composed of positive and negative ions. Positive ions are atoms that have more protons than electrons, while negative ions inversely have more electrons than protons.


    In a lithium-ion battery, positive lithium ions flow between electrodes via electrolytes. Lithium ions can flow freely through liquid-state electrolytes but are less mobile in a solid-state electrolyte Nike Epic React Flyknit Mens , which adversely affects conductivity.


    To improve the conductivity in solid-state electrolytes, the researchers produced a computational model in which a single negative ion is removed. Negative cluster ions, groups of atoms with more electrons than protons, replace the absent ion.


    Originally, the electrolyte, which belongs to a family of crystals called antiperovskites, contained positive ions made of three lithium atoms and one oxygen atom. The positive ions were joined with a single chlorine atom that was a negative ion.


    In the computational model Cheap Nike Epic React Flyknit Womens , the chlorine atom was replaced by a negative cluster ion created by one boron atom and four fluorine atoms joined to the existing positive ions. Other combinations of negative cluster ions were identified to potentially enhance conductivity.


    "Replacing the chlorine ion with cluster ions improves conductivity because these ions are larger and allow the lithium ions to move quickly, as if they were in a liquid," said Hong Fang, a postdoctoral fellow in the Department of Physics.


    Next, researchers are now in search of collaborators to test their computational model in a laboratory setting for eventual lithium-ion battery applications.




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