Recycling of spent lithium-ion batteries: Selective ammonia leaching of valuable metals and simultaneous synthesis of high-purity manganese carbonate

Wang，Chao1; Wang，Shubin1,2; Yan，Feng1,2; Zhang，Zhen1; Shen，Xuehua1; Zhang，Zuotai1,2

2020-08-01

10.1016/j.wasman.2020.07.008

WASTE MANAGEMENT   影响因子和分区

0956-053X

1879-2456

Recycling of spent lithium-ion batteries (LIBs) has drawn considerable attention in recent years, as an economic solution to the resource shortage. Selective ammonia leaching is recognized as an economical and environment-friendly method, yet it is difficult to separate and reuse the valuable metals from the leachate. In this study, we proposed an NH–(NH)CO-NaSO leaching system to selectively recover the valuable metals from commercial LiNiCoMnO (NCM) and spent NCM. For single-stage leaching, 79.1% of the lithium, 86.4% of the cobalt, and 85.3% of the nickel were selectively leached under optimal conditions, and a mere 1.45% of the manganese was dissolved in the solution. The leaching process in the NH–(NH)CO-NaSO system was consistent with the surface chemical reaction control model. For multistage leaching, almost all metals (98.4% of the lithium, 99.4% of the cobalt, 97.3% of the nickel) could be leached and a high-purity (>99%) MnCO product was simultaneously obtained. The introduction of CO not only led to the production of MnCO with wide application prospects, but also greatly reduced the consumption of the reducing agent. This study is thus beneficial for recycling of the valuable metals and synthesis of the MnCO product from the spent LIBs.

High-purity MnCO3 LiNixCoyMn1−x−yO2 Multistage leaching Selective ammonia leaching Spent LIBs

SCI ; EI

英语

第一 ; 通讯

WOS:000553807100007

20202908948868

Nickel compounds ; Manganese compounds ; Sodium compounds ; Surface reactions ; Lithium-ion batteries ; Lithium compounds ; Ammonia ; Cobalt ; Nickel ; Recycling

Industrial Wastes:452.3 ; Nickel:548.1 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Chemical Reactions:802.2 ; Chemical Operations:802.3 ; Inorganic Compounds:804.2

ENGINEERING

2-s2.0-85087880133

Scopus

1.School of Environmental Science and Engineering,Southern University of Science and Technology,Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control,Shenzhen,518055,China
2.Key Laboratory of Municipal Solid Waste Recycling Technology and Management of Shenzhen City,Shenzhen,518055,China

Wang，Chao,Wang，Shubin,Yan，Feng,et al. Recycling of spent lithium-ion batteries: Selective ammonia leaching of valuable metals and simultaneous synthesis of high-purity manganese carbonate[J]. WASTE MANAGEMENT,2020,114:253-262.

Wang，Chao,Wang，Shubin,Yan，Feng,Zhang，Zhen,Shen，Xuehua,&Zhang，Zuotai.(2020).Recycling of spent lithium-ion batteries: Selective ammonia leaching of valuable metals and simultaneous synthesis of high-purity manganese carbonate.WASTE MANAGEMENT,114,253-262.

Wang，Chao,et al."Recycling of spent lithium-ion batteries: Selective ammonia leaching of valuable metals and simultaneous synthesis of high-purity manganese carbonate".WASTE MANAGEMENT 114(2020):253-262.