Self-terminated oligomers with hyper branched 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 demonstrates that for the mechanical blending combined materials no blocking effects are observed at high temperature condition.For the surface coating ones, STOBA has slightly impact on the cell performance at room temperature, but when the ambient temperature exceedes the cross-linking temperature, large area of crosslinking 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.