中文摘要：

本文通过生命周期评价方法,设定在相同的外界容量需求下,结合电池循环性能数据,研究了LiCo1/3Ni1/3Mn1/3O2、LiCo1/3Ni1/3Mn1/3O2＋1%Fe3O4和LiMn0.2Fe0.8PO43种不同的锂离子正极材料的环境影响,并耦合环境影响和放电比容量进行量化处理,得到相应的性能优选指数。结果表明：锂离子电池的正极材料普遍具有较大的综合环境影响值,3大类环境影响分类中影响较大的是人体健康和资源消耗。在3种正极材料中,LiCo1/3Ni1/3Mn1/3O2的综合性能最好,环境友好性和充放电性能都具有较大的优选指数。在LCA处理正极材料的基础上,结合电池充放电数据实现了对材料的比较和优选。

英文摘要：

Life cycle assessment theory is used to analyze the environmental impact of 3 different cathode materials（ LiCo1 /3Ni1 /3Mn1 /3O2,LiCo1 /3Ni1 /3Mn1 /3O2＋ 1% Fe3O4 and LiMn0. 2Fe0. 8PO4） by setting in the same capacity external demand. An optimization index is calculated by quantifying the environmental performance and the discharge performance. The result shows： the most remarkable environmental impacts come from respiratory inorganics and fossil fuels. The impacts on human health and resource depletion are more significant than on ecosystem quality. Comparing the optimization indexes of different cathode materials,LiCo1 /3Ni1 /3Mn1 /3O2 has the best overall performance because of its lower optimization index. Based on the LCA result,the comparison and the optimization of the Li- ion cathode materials can be realized in accordance with the optimization index and the weighting factor of the material performance.