关键词: 锂离子电池, 爆喷, 残留粉末, 溶解

Abstract: The residual powders of lithium-ion batteries at different voltages after explosion were obtained by using the battery impact testing machine. And these powders have been investigated by weighing, water solution and X-ray diffraction (XRD). The results showed that the integrity status of copper current collector and weight of residual powders decreased gradually with increasing of battery voltage, rising of burning temperature and releasing of burning duration time. The residual powders could be separated to insoluble powders and soluble powders by the water solution. The proportion of the insoluble powders is more (about 90%) including C, Co and CoO, while the proportion of the soluble powders is few (about 10%) including Li2CO3 and LiF. The contents of the insoluble powders and the soluble powders decreased and increased, respectively, with gradual increasing in battery voltages.

Key words: lithium ion battery, explosion, residual powder, solution