Evaluation and optimization analysis of carbon reduction efficiency of retired NCM lithium battery recycling system
LI Jian-xi1, SONG Xiao-long1,2, PAN Jing-jin3,4, ZHUANG Xu-ning1,2, ZHAO Jing1,2, DOU Yong-qi1
1. School of Resources and Environmental Engineering, Shanghai Polytechnic University, Shanghai 201209, China; 2. Shanghai Collaborative Innovation Center for WEEE Recycling, Shanghai 201209, China; 3. Green Development Research Center, China Electronics Standarization Institute, Beijing 100007, China; 4. School of Materials Science and Engineering, Beihang University, Beijing 100083, China
Abstract:With the rapid development of China's new energy vehicle industry, a large number of power batteries have entered the retirement period. It has become an important research topic to identify the synergistic effect of cost and carbon reduction and carry out systematic optimization analysis in view of the current situation of retired power battery recycling. The carbon footprint and economic cost of the retired NCM lithium battery recycling system in China were analyzed by using life cycle assessment and life cycle costing. The carbon footprint and life cycle cost of the retired NCM lithium battery recycling system with 1GWh capacity were -2.33×107kgCO2eq and –336131500 yuan, respectively. The carbon reduction efficiency assessment and scenario analysis were carried out based on the two-dimensional indicators of carbon footprint and life cycle cost. It was found that compared with the real system, the optimization scenario dominated by automobile manufacturers had lower carbon reduction efficiency, and the optimization scenario with higher echelon utilization ratio had the optimal carbon reduction efficiency. The carbon reduction efficiency of the retired NCM lithium battery recycling system can be significantly improved by increasing the proportion of echelon utilization and adopting advanced resource recovery technology.
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