A simple solvent method for the recovery of Li_xCoO₂ and its applications in alkaline rechargeable batteries

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• 作者：Yanan Xu ; Dawei Song ; Li Li ; Cuihua An ; Yijing Wang ; LiFang Jiao ; Huatang Yuan
• 关键词：Lithium cobalt oxide ; Recovery ; Solvent method ; Alkaline secondary battery ; Anode material
• 刊名：Journal of Power Sources
• 出版年：15 April, 2014
• 年：2014
• 卷：252
• 期：Complete
• 页码：286-291
• 全文大小：1528 K

文摘

A simple solvent method is proposed for the recovery of waste Li_xCoO₂ from lithium-ion batteries, which employs inexpensive DMF to remove the binder of PVDF. This method is convenient to manipulate and low-cost to apply. Electrochemical investigations indicate that recovered Li_xCoO₂ materials with a small amount of S-doping exhibit excellent properties as negative materials for alkaline rechargeable Ni/Co batteries. At the discharge current density of 100聽mA聽g^鈭?, the Li_xCoO₂聽+聽1% S electrode displays the max discharge capacity of 357聽mAh聽g^鈭? and outstanding capacity retention rate of 85.5% after 100 cycles. It could overcome not only the sophisticated, energy-intensive shortcomings of conventional recycling methods, but also the high-cost restriction on alkaline rechargeable Ni/Co batteries.