High-Performance Graphite Recovered from Spent Lithium-Ion Batteries

By Xiaotu Ma, Mengyuan Chen, Bing-huang Chen, Zifei Meng, Yan Wang. ACS Sustainable Chemistry and Engineering, 2019

204 citations recorded by the source corpus.

With the wide usage of Li-ion batteries (LIBs) in portable electronics, electric vehicles, and grid storage, recycling and reusing LIBs have attracted wide attention. However, due to the low added value and rigorous separation steps, recycling and recovering graphite anode materials are discarded. Although some direct physical recycling processes have been reported, all of them are limited by rigorous separation steps and lab scales. In this paper, a scalable recycling process for graphite anode materials from spent LIBs by a hydrometallurgical process without separation steps is reported. After the leaching process, graphite was separated by filtration as a residue with impurities. Then, all residual cathode materials, other metal impurities, most binding materials, and aluminum oxide were removed after releaching and fusion steps. Finally, high-quality graphite powder was obtained, and the recycled graphite exhibits a comparable discharge capacity of 377.3 mAh/g at 0.1 C.

Subfields: Electrical and Electronic Engineering, Industrial and Manufacturing Engineering, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/386b4470e1c6360aa73337ea37c5f97ac612c99c