锂离子电池负极石墨回收处理及资源循环
Recovery and resource recycling of graphite anode materials for spent lithium-ion batteries
锂离子电池负极石墨回收处理及资源循环 |
| 燕乔一, 吴锋, 陈人杰, 李丽 |
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Recovery and resource recycling of graphite anode materials for spent lithium-ion batteries |
| YAN Qiaoyi, WU Feng, CHEN Renjie, LI Li |
| 图2 (a) 无机酸回收过程流程图；(b) 低温硫酸固化法；(c) 电解前的废石墨阳极、回收的铜箔和电解后的阳极活性材料，石墨与铜箔的分离和Li+ 的溶解过程以及电流随电解时间的变化；(d) 有机酸浸提示意图；(e) 水溶性锂盐回收工艺；(f) 未处理、热处理后、亚临界二氧化碳辅助电解液萃取后热处理、超临界二氧化碳辅助电解液萃取后热处理石墨的SEM图像[ |
| Fig. 2 (a) Flow chart of inorganic acid recovery process; (b) Low temperature sulfuric acid solidification method; (c) Waste graphite anode before electrolysis, recovered copper foil and anode active material after electrolysis, separation of graphite and copper foil and dissolution of Li+ process and the change of current with electrolysis time; (d) Schematic diagram of organic acid leaching; (e) Water-soluble lithium salt recovery process; (f)SEM images of untreated, heat-treated, heat-treated graphite after subcritical CO2-assisted electrolyte extraction, and heat-treated graphite after supercritical CO2-assisted electrolyte extraction[ |
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