Co-Based Oxides

Among the transition metal oxides, cobalt oxides show highest reversible capacity (750 mAh/gand 1000 mAh/g for CoO and C03O4, respectively).  

ID materials by adopting AAO, SBA-15 or KIT-6, the mass product is impracticable, which is the bottleneck for its practical application. 

Besides synthesis of nanosized materials with particular structure, preparation of active/inactive composites is another strategy to solve the problem of volume expansion upon cycling. 

C03O4-C composites were prepared to prevent the aggregation of the particles and loss of the electrical contact. C03O4-C composite 

Another inherent drawback is the large irreversible capacity during the first cycle. A positive electrode material with excess Li could serve as a Li reservoir and compensate for the large irreversible capacity. When chemically lithiated spinel Lii.3Mn2 04 is adopted as cathode and a Co0/Lii.3Mn2 04 Li-ion cell with an Mr equal to 6.2 was assembled (where Mr is the optimum mass 

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