The anode material of lithium-ion batteries is lithium carbide LiC6. The cathode material is cobalt dioxide, CoO2. If in an accident the anode material gets into contact with the cathode material, the irreversible reaction LiC6 + CoO2 -> 6 C + LiCoO2 occurs. Butland and Maddison [5] give the specific heat capacity of graphite as the polynomial:
cp = 0.630375 K g K^2 g 225.861 cal/g 3100.10 cal K/g T T^2 910 737.0 calK^2/g 9.64607 x 10^7 cal K^3/g T^3 T^4
The enthalpies of formation of the compounds are given in this table:
Compound H
LiC6 -16.4 kJ/mol
LiCoO2 679.4 kJ/mol
CoO2 285.9 kJ/mol
Dang [4] reports the molar heat capacities of LiCoO2 as:
Cp = -1.46 x 10^6 J K/mol + 82.4 J/mol K + 374104 J/mol K^3 T^2