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The rapid development of China's new energy industry has dramatically increased the sales of electric vehicles. Frequent charging and discharging will lead to a decline in the service life of the battery, and consequently a large number of lithium iron phosphate (LFP) batteries are discarded. Batteries contain a large number of toxic substances, and the wrong recycling method will produce a large amount of pollution. In China, the question of how to improve the technology for recycling LFP batteries more environmentally friendly is still under investigation. Life Cycle Assessment (LCA) methodology was employed to analyze the environmental impacts of the whole process of recycling LFP batteries by the conventional recycling technologies used in traditional factories in China. The results of the study show that the hydrometallurgy process is superior to the physical recycling process though environmental benefits of the physical recovery process with complete recovery are better than those of hydrometallurgical process with incomplete recovery. Incomplete hydrometallurgical methods release more toxic substances into the environment, whereas traditional physical process only need to focus on the pollution caused by the battery crushing process. The results of the calculation and analysis provide a new direction for the technological update of power battery recycling in China.
Zhang et al. (Thu,) studied this question.