A novel high temperature stable lithium salt (Li(2)B(12)F(12)) for lithium ion batteries

A novel high temperature stable lithium salt (Li(2)B(12)F(12)) for lithium ion batteries

Basic properties and battery performances of the novel high temperature stable lithium salt (Li(2)B(12)F(12), Dilithium Dodecafluorododecaborate; Li(2)DFB) were studied using a Mn-based cathode and anode composed of a hard carbon and graphite mixture. The effect of co-solvents (mainly linear carbona...

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Veröffentlicht in:Journal of power sources 2009-09, Vol.193 (2), p.851-854
Hauptverfasser: Arai, Juichi, Matsuo, Akira, Fujisaki, Takashi, Ozawa, Kazunori
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container_title Journal of power sources
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creator Arai, Juichi
Matsuo, Akira
Fujisaki, Takashi
Ozawa, Kazunori
description Basic properties and battery performances of the novel high temperature stable lithium salt (Li(2)B(12)F(12), Dilithium Dodecafluorododecaborate; Li(2)DFB) were studied using a Mn-based cathode and anode composed of a hard carbon and graphite mixture. The effect of co-solvents (mainly linear carbonate in electrolyte formulation of PC/EC/co-solvent (5/30/65 vol% mixture)) on conductivity, viscosity, charge-discharge capacities, rate performance, temperature performance, cycle life and storage life at 60 'C was investigated. Conductivity of Li(2)DFB electrolyte increased with reducing its viscosity by changing co-solvent and increasing the volume of the higher dielectric solvent. Li(2)DFB electrolytes showed comparable discharge capacity and columbic efficiency against LiPF(6) electrolyte. Li(2)DFB electrolytes improved the storage life and cycle life of a Mn-based cell at 60 'C.
doi_str_mv 10.1016/j.jpowsour.2009.04.001
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title A novel high temperature stable lithium salt (Li(2)B(12)F(12)) for lithium ion batteries
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