A universal synthesis of N, S, Cl-doped carbon materials directly from dye waste liquid for high performance lithium storage

The complicated structured dyes produced by the textile industry have become a serious problem in the last few decades, which can be attributed to their stable chemical structures and difficult to degrade. Therefore, in this article, we described a method to fix dye macromolecules by flocculation process and then transform the colloid to N, S, Cl-doped porous carbon materials. This material can effectively improve the capacity and cycle stability of lithium ion batteries, and recycle the dyes in the water. The N, S, Cl-doped porous carbon materials show a superior electrocatalytic performance of 473.5 mAhg −1 at the current density of 100 mAg −1 after 60 cycles. The present work combines the lithium ion batteries with dyes waste treatment and has a broad prospect for development.