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Benign Recycling of Spent Batteries towards All‐Solid‐State Lithium Batteries
Author(s) -
Wang YaoYao,
Diao WanYue,
Fan ChaoYing,
Wu XingLong,
Zhang JingPing
Publication year - 2019
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201900845
Subject(s) - lithium (medication) , energy storage , materials science , anode , waste management , process engineering , power (physics) , chemistry , engineering , electrode , medicine , physics , quantum mechanics , endocrinology
Lithium‐ion batteries (LIBs) are one of the most significant energy storage devices applied in power supply facilities. However, a huge number of spent LIBs would bring harmful resource waste and environmental hazards. In this study, a benign hydrometallurgical method using phytic acid as precipitant is proposed to recover useful metallic Mn ions from spent LiMn 2 O 4 batteries. Besides Mn‐based cathodes, this recovery process is also applicable for other commercial batteries. More importantly, for the first time, the as‐obtained manganous complex is employed as a nanofiller in a polyethylene oxide matrix to largely improve Li + conductivity and transference number. As a result, when applied in all‐solid‐state lithium batteries, high capacity and outstanding cyclic stability are achieved with capacity retention of 86.4 % after 60 cycles at 0.1 C. The recovery of spent lithium batteries not only has benefits for the environment and resources, but also shows great potential application in all‐solid‐state lithium batteries, which opens up a costless and efficient circulation pathway for clean and reliable energy storage systems.