Self-terminated oligomers with hyperbranched architecture, also known as STOBA, are combined with lithium-ion battery cathode materials by two different ways: mechanical blending and surface coating. The comparative electrochemical analyses of the assembled coin cells demonstrate that for the materials gained through mechanical blending, no blocking effects are observed at high-temperature condition. For the surface coating ones, STOBA has slight impact on the cell performance at room temperature, but when the ambient temperature exceeds the cross-linking temperature, large area of cross-linking will occur on the surface of the electrode materials, which prevents the lithium ion from extracting and inserting. As a result, the battery totally loses charge–discharge capacity in the high rate discharge condition to ensure the safety when operating at high temperatures.


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    Title :

    Studies on the Working Mode of Hyperbranched New Materials STOBA in Lithium-ion Battery Cathode Materials


    Additional title:

    Lect. Notes Electrical Eng.


    Contributors:
    Cui, Xinran (author) / Mi, Xinyan (author) / Cao, Tingting (author) / Jiang, Tao (author) / Chen, Huiming (author) / Zhao, Zhongling (author) / Zhang, Kejin (author)


    Publication date :

    2014-12-20


    Size :

    8 pages





    Type of media :

    Article/Chapter (Book)


    Type of material :

    Electronic Resource


    Language :

    English




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