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Preferential Adsorption of Solvents on the Cathode Surface of Lithium Ion Batteries


  • Founding of this work is provided by the Li-EAD project of the New Energy and Industrial Technology Development Organization (NEDO). This work was also supported by a Grant-in-Aid for Scientific Research on Innovative Areas “Coordination Program” (24108701) and a Grant-in-Aid for Scientific Research (B) 23350058 from the Ministry of Education, Culture, Sports, Science & Technology (MEXT) (Japan). H.L. acknowledges a funding support (KJLD12089).


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The adsorption structures of solvents on the surface of LiCoO2, which is the most widely used cathode material for Li-ion batteries, in contact with nonaqueous electrolyte solutions of carbonate esters have been characterized by in situ sum frequency generation (SFG) spectroscopy. The cyclic carbonate of ethylene carbonate (EC) is preferentially adsorbed on the LiCoO2 surface, in contrast to linear carbonates, such as dimethyl carbonate (DMC).

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