Jian YANG , Yuan ZHOU , Zong-liang ZHANG , Kai-hua XU , Kun ZHANG , Yan-qing LAI , Liang-xing JIANG
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Effect of electric field on leaching valuable metals from spent lithium-ion batteries
An electric field enhanced leaching process was proposed to improve the leaching efficiency in the process of extracting Li, Ni, Co and Mn from waste lithium ion batteries. The leaching process was optimized and the leaching mechanism was studied by means of leaching experiments, product characterization and leaching kinetics. Under the optimized leaching conditions, more than 98% Li, 97% Ni and Co and 93% Mn were leached into the solution. The study of leaching kinetics shows that the leaching process of Li, Ni, Co and Mn is controlled by chemical reaction based on nuclear reduction model, and the activation energy of leaching is determined to be 42.4, 46.1, 46.2 and 47.3 kJ/mol, respectively. During the leaching process, the application of electric field provides a convenient channel for the recycling of Fe2+ and Cl− in the solution, reduces the amount of reducing agent added, and ensures high metal leaching rate.
期刊介绍：
The Transactions of Nonferrous Metals Society of China (Trans. Nonferrous Met. Soc. China), founded in 1991 and sponsored by The Nonferrous Metals Society of China, is published monthly now and mainly contains reports of original research which reflect the new progresses in the field of nonferrous metals science and technology, including mineral processing, extraction metallurgy, metallic materials and heat treatments, metal working, physical metallurgy, powder metallurgy, with the emphasis on fundamental science. It is the unique preeminent publication in English for scientists, engineers, under/post-graduates on the field of nonferrous metals industry. This journal is covered by many famous abstract/index systems and databases such as SCI Expanded, Ei Compendex Plus, INSPEC, CA, METADEX, AJ and JICST.
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