Synthesis and electrochemical performances of LiCoO2 recycled from the incisors bound of Li-ion batteries

A new LiCoO 2 recovery technology for Li-ion batteries was studied in this paper. LiCoO 2 was peeled from the Al foil with dimethyl acetamide (DMAC), and then polyvinylidene fluoride (PVDF) and carbon powders in the active material were eliminated by high temperature calcining. Subsequently, Li 2 CO...

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Published in:Rare metals 2009-08, Vol.28 (4), p.328-332
Main Authors: Li, Jinhui, Zhong, Shengwen, Xiong, Daoling, Chen, Hao
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Language:English
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Biomaterials
Chemistry and Materials Science
Energy
Materials Engineering
Materials Science
Metallic Materials
Nanoscale Science and Technology
Physical Chemistry
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Xiong, Daoling
Chen, Hao
description A new LiCoO 2 recovery technology for Li-ion batteries was studied in this paper. LiCoO 2 was peeled from the Al foil with dimethyl acetamide (DMAC), and then polyvinylidene fluoride (PVDF) and carbon powders in the active material were eliminated by high temperature calcining. Subsequently, Li 2 CO 3 , LiOH·H 2 O and LiAc·2H 2 O were added into the recycled powders to adjust the Li/Co molar ratio to 1.00. The new LiCoO 2 was obtained by calcining the mixture at 850°C for 12 h in air. The structure and morphology of the recycled powders and resulting samples were studied by XRD and SEM techniques, respectively. The layered structure of LiCoO 2 synthesized by adding Li 2 CO 3 is the best, and it is found to have the best characteristics as a cathode material in terms of charge-discharge capacity and cycling performance. The first discharge capacity is 160 mAh·g −1 between 3.0–4.3 V. The discharge capacity after cycling for 50 times is still 145.2 mAh·g −1 .
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subjects Biomaterials
Chemistry and Materials Science
Energy
Materials Engineering
Materials Science
Metallic Materials
Nanoscale Science and Technology
Physical Chemistry
title Synthesis and electrochemical performances of LiCoO2 recycled from the incisors bound of Li-ion batteries
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