Synergistic Mechanism Between Reductive Metal Recovery from Spent Lithium Manganese Oxide (LMO) Cathodes and Catalytic Gas Production from Cellulose(PDF)
MATERIALS CHINA[ISSN:1674-3962/CN:61-1473/TG]
Issue:
2026年03
Page:
234-238
Research Field:
Publishing date:
Info
Title:
Synergistic Mechanism Between Reductive Metal Recovery from Spent Lithium Manganese Oxide (LMO) Cathodes and Catalytic Gas Production from Cellulose
1. College of Chemistry and Chemical Engineering, Central South University，Changsha 410083，China
2. College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081，China
With the rapid development of electric vehicles, the disposal of spent lithiumion batteries has emerged as a pressing challenge. This study presents a controlled thermochemical conversion strategy utilizing cellulose reductants to transform LiMn2O4 (LMO) cathodes into recyclable forms, eliminating the need for chemical additives while leveraging the catalytic properties of transition metals in spent cathode materials for CO production through catalytic reforming of cellulose pyrolysis gas products. The results demonstrate that gases from cellulose pyrolysis facilitate the reduction of highvalence Mn species to MnO while converting Li into Li2CO3. The reducing gases generated from cellulose pyrolysis at lower temperatures effectively reduce the cathode materials. Notably, MnO exhibits catalytic functionality in promoting CO2biochar reactions at relatively low temperatures (700 ℃), yielding substantial CO production. This process enables the efficient and pollution-free recovery of valuable metals without the addition of external reducing agents, providing a green and sustainable alternative for the recycling of spent lithiumion batteries.