摘要
本研究基于化学链技术,探讨了废旧钴酸锂电池的回收与还原特性。采用氢气还原法,通过化学链反应器对废旧钴酸锂进行还原实验,分析了不同温度和时间条件下钴酸锂的还原率、回收率及反应机理。实验结果表明,温度是影响钴酸锂还原反应最重要的因素,高温可显著提高还原率,最佳还原条件为800℃-120 min。通过热力学分析揭示了钴酸锂还原的具体过程。模拟计算结果表明合适的氢气浓度可以减少还原过程中的能量消耗。该研究为废旧钴酸锂电池的高效回收提供了新的思路,并为化学链氢气还原法的应用奠定了实验基础。
This study,based on chemical looping technology,investigates the recycling and reduction characteristics of spent LiCoO2 batteries.Hydrogen reduction was employed to reduce spent LiCoO2 in a chemical looping reactor,and thc rcduction rate,recovery rate,and reaction mechanism of LiCoO2 were analyzed under different temperature and time conditions.The experimental results indicate that temperature is the most important factor infuencing the reduction reaction of LiCoO2,with higher temperatures significantly improving the reduction rate.The optimal reduction conditions were found to be 800℃ for 120 min.Thermodynamic analysis revealed the specific process of LiCoO2 reduction.Simulation results showed that an appropriate hydrogen concentration can reduce energy consumption during the reduction process.This study provides new insights for the efficient recycling of spent LiCoO2 batteries and lays the experimental foundation for the application of chemical looping hydrogen reduction.
作者
邵家宁
杨丽
曹运齐
宋晨
刘方
SHAO Jianing;YANG Li;CAO Yunqi;SONG Chen;LIU Fang(China University of Mining and Technology,School of Low-Carbon Energy and Power Engineering,Xuzhou,Jiangsu 221116,China)
出处
《工程热物理学报》
北大核心
2025年第6期2064-2072,共9页
Journal of Engineering Thermophysics
基金
国家自然科学基金(No.52376136)
江苏省自然科学基金(No.BK20240208,No.BT2024010)。
关键词
废旧钴酸锂电池
化学链
氢气还原
回收
spent LiCoO2 batteries
chemical looping
hydrogen reduction
recycling
