TITLE:
Review of Research on Li-Ion Batteries Waste Management
AUTHORS:
Rokhaya Sylla Gueye, Nango Gaye, Mamadou Baldé, Adama Diedhiou, Ngoné Diouf, Seck Gorgui Awa, Idrissa Ndoye, Yoro Tine, Matar Seck, Djibril Fall, Alassane Wele, Mahy Diaw
KEYWORDS:
Libs Waste, Leaching, Extraction Rate, Affinity, Partition Coefficient
JOURNAL NAME:
Open Journal of Inorganic Chemistry,
Vol.12 No.2,
April
30,
2022
ABSTRACT: Li-ion
batteries (Libs) are a mature technology widely used for
energy storage in various electronic devices. Nowadays, this technology has
become a leading candidate for the portable electronics market and for electric
vehicles due to its good performance. As a result, the demand for Libs
containing critical metals, rare earth elements and precious metals is
increasing day by day with the accelerated upgrades of consumer electronics,
which promotes the supply risk of many mining resources. In addition, the
problems associated with the production of end-of-life Lib are increasing on a
global scale. Used Libs are e-waste containing significant levels of critical
raw materials (such as Co, Li, Mn and Ni) along with harmful substances.
Without proper management of Lib waste, these precious metals and toxic
substances may end up in nature and cause environmental and public health
problems. In order to preserve nature, ensure sustainable resource management
and stimulate the circular economy, it has become crucial to properly manage and
recycle end-of-life Li-ion batteries. By the way, conventional methods focusing
on pyrometallurgical treatments combined with hydrometallurgical treatment are
widely studied to recover design metals from Libs waste. It is in this context
that we have conducted this bibliographic synthesis, focusing on the efficiency
of the solvents employed and their competitiveness for a more environmentally
friendly economic management. In this manuscript, recent leaching, solvent
extraction, electrodeposition and precipitation strategies to recover precious
metals from end-of-life Li-ion battery designs are reviewed and the evolution
of these processes is discussed.