Direct Recycling of Aged LiMn 2 O 4  Cathode Materials used in Aqueous Lithium‐ion Batteries: Processes and Sensitivities | Zendy

Wang Han | Zendy; Whitacre Jay F. | Zendy

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Direct Recycling of Aged LiMn 2 O 4 Cathode Materials used in Aqueous Lithium‐ion Batteries: Processes and Sensitivities

Author(s) -

Wang Han,

Whitacre Jay F.

Publication year - 2018

Publication title -

energy technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.91

H-Index - 44

eISSN - 2194-4296

pISSN - 2194-4288

DOI - 10.1002/ente.201800315

Subject(s) - electrochemistry , materials science , lithium (medication) , cathode , electrolyte , hydrothermal circulation , aqueous solution , battery (electricity) , lithium ion battery , ion , chemical engineering , mineralogy , inorganic chemistry , chemistry , electrode , medicine , power (physics) , physics , organic chemistry , quantum mechanics , engineering , endocrinology

Aged LiMn 2 O 4 cathode materials were collected from aqueous electrolyte lithium‐ion batteries after long‐term cycling. The aged LiMn 2 O 4 cathode materials, which had variable states of charge, were recycled using two different “direct“ methods: solid‐state, and hydrothermal. X‐ray diffraction and electrochemical analysis revealed that the hydrothermal method yielded a recycled product with higher phase purity, electrochemical energy storage capacity. Additionally, the importance of the state of charge of the aged LiMn 2 O 4 on the recycled product varied depending on the methodology used. While the recycled products from the solid‐state method were sensitive to the state of charge of the aged LiMn 2 O 4 , the state of charge of the aged LiMn 2 O 4 doesn't have an obvious effect on the hydrothermally recycled product.

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