AUTHOR=Lu Xinyu , Li Zongrun , Zou Jingtian , Peng Dezhao , Hu Wenyang , Zhong Yuanyuan , Li Pengfei , Su Shilin , Wang Xiaowei , Wang Shubin , Zhao Zaowen , Zhang Jiafeng 

TITLE=Spent lithium manganate batteries for sustainable recycling: A review

JOURNAL=Frontiers in Materials

VOLUME=10

YEAR=2023

URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2023.1152018

DOI=10.3389/fmats.2023.1152018

ISSN=2296-8016

ABSTRACT=<p>Lithium-ion batteries (LIBs) account for the majority of energy storage devices due to their long service life, high energy density, environmentally friendly, and other characteristics. Although the cathode materials of LIB led by LiFePO<sub>4</sub> (LFP), LiCoO<sub>2</sub> (LCO), and LiNi<sub>x</sub>Co<sub>y</sub>Mn<sub>1-x-y</sub>O<sub>2</sub> (NCM) occupy the majority of the market share at present, the demand of LiMn<sub>2</sub>O<sub>4</sub> (LMO) cathode battery is also increasing year by year in recent years. With the rising price of various raw materials of LIBs and the need of environmental protection, the efficient recycling of spent LIBs has become a hot research topic. At present, the recycling of spent LIBs mainly focuses on LFP, LCO, and NCM batteries. However, with the continuous improvement of people’s safety of LIBs, LiMn<sub>x</sub>Fe<sub>1-x</sub>PO<sub>4</sub> (LMFP) batteries show better potential, which also improves the recycling value of LMO batteries. Therefore, this paper reviews current methods of spent LMO recovery, focusing on the characteristics of the recovery and separation process, which can serve as a reference for subsequent research on LMO recovery, increasing environmentally friendly recovery routes. Finally, the future development direction of LIBs recycling is prospected. Overall, this review is helpful to understand the current progress of LMO battery recycling.</p>