1. School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
2. Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, Guangzhou 510640, P. R. China
3. Guangdong Province Waste Lithium Battery Clean Regeneration Engineering Technology Research Center, Zhaoqing 526116, P. R. China
4. Guangdong Jinsheng New Energy Co. Ltd., Zhaoqing 526116, P. R. China