用DTA和XRD研究了LiNiO2在空气中的热分解过程为：LiNiO2(s)650～720℃ Li2Ni8O10(s)+4Li2O(s)+ O2(g)850～950℃Li2O(s)+8NiO(s)+1／2 O2(g)1000～1150℃NiO(s)+Li2 O(g)用Doyle-Ozawa法和Kissinger法计算了各反应阶段的表观活化能分别为747．18±1．0 kJ．mol-1、932．461．0 kJ．mol-1和1126．971．0 kJ．mol-1．用Kissinger法确定了反应级数和频率因子，确定了三个阶段的动力学方程分别为dα／dt=1．736×1039e-90000／T(1 -α)1．057；dα／dt=1．806×10 39 e-111500／T(1 -α)0．844；dα／dt=4．262×1042e-135000／T(1 -α)1．275．
The decomposition of LiNi O2 in the atmosphere was studied by DTA and XRD. The decomposition process was shown as following: LiNiO2(s) 650～720℃ Li2Ni8O10(s)+4Li2 O(s)+O2(g)850～950℃ Li2O(s)+8NiO(s)+1/2O2(g) 1000～1150℃ NiO(s)+Li2 O(g). The activation energies of the above three reaction stages were calculated by Doyle-Ozawa method and Kissinger method as 747.18+1.0 k J.mol-1, 932.46+1.0 kJ.mol-1 and 1126.97+1.0 kJ.mol-1. The reaction orders and frequency factors can be also determined by Kissinger method. The kinetics equations of each reaction were deduced as dα/dt=1.736× 1039 e-90000/T(1- α)1.057, dα/dt=1.806× 1039e-111500/T(1-α)0.844 and dα/dt=4.262× 1042e-135000/T(1 - α)1.275.
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