Conclusion In the roasting process, the electrode material of discarded lithium-ion batteries was mixed with (NH 4) 2 SO 4 in a mass ratio of 3:1. The roasting is conducted at a temperature of 450 °C for 30 min, leading to the rapid extraction of 99.99% of Li, Co, Ni, and Mn.
The positive electrode material for ternary lithium-ion batteries (LiNi x Co y Mn 1-x-y O 2) is a promising avenue for future application and development in lithium-ion batteries, owing to its high output voltage and energy density [ 21 ].
This suggests that in the process of roasting discarded lithium-ion battery electrode materials with (NH 4) 2 SO 4, chemical control reactions dominated in the first 10 min, while diffusion control reactions dominated in the subsequent 20 min. Fig. 7.
Recently, the combined method of low-temperature roasting and leaching has gained attention as a research focus for treating electrode waste materials. This includes methods like chloride roasting-water leaching, sulfuric acid or ammonium sulfate roasting-water leaching, and reduction roasting-step leaching.
The lithium leaching rate of 99.39% and cobalt retention rate of 99.84% are achieved under the optimum roasting conditions of molar ratio of roasting salts to SLCO at 3.0 and temperature of 750 ℃. We further tested the XRD of the filter residue under different conditions (Fig. 1 c-e).
The waste lithium-ion battery electrode materials used in this study were procured from the electronic market. The obtained lithium-ion battery electrode powder underwent sieving with a 100-mesh sieve to eliminate impurities like battery plastic packaging.
EI-LMO, used as positive electrode active material in non-aqueous lithium metal batteries in coin cell configuration, deliver a specific discharge capacity of 94.7 mAh g −1 at …
Fig. 1 Schematic of a discharging lithium-ion battery with a lithiated-graphite negative electrode (anode) and an iron–phosphate positive electrode (cathode). Since lithium …
Compared with current intercalation electrode materials, conversion-type materials with high specific capacity are promising for future battery technology [10, 14].The rational matching of cathode and anode …
Roasting could thoroughly remove the organic outer layer coated on the surface of electrode-active materials, which improved the flotation enrichment efficiency of valuable metals in the …
(a) Flow chart of SLFPBs treated by Na 2 CO 3 assisted carbothermal reduction roasting-magnetic separation process [48], (b) Process diagram and XRD pattern of SLFPBs electrode …
Herein, we propose a novel selective lithium extraction process through low …
Therefore, a new method for lithium selective extraction from spent lithium-ion battery cathode materials is proposed, aiming at more efficient recovery of valuable metals. The acid + oxidant leaching system was …
The cost of these cathode materials can typically account for 20% or more of the entire battery''s price, as the proportion of these metal materials in nature is very small, and the …
The combined method can integrate the advantages of various separation methods, with high separation efficiency, high purity of positive electrode material recovered, …
A method for directly roasting and treating waste lithium ion batteries and recovering valuable metals, in particular to the recovery and treatment of the waste lithium ion batteries taking...
Organic material electrodes are regarded as promising candidates for next-generation rechargeable batteries due to their environmentally friendliness, low price, structure …
Introduction. In the early 1990s, Moli and Sony used carbon materials with graphite structure to replace metal lithium anodes, and lithium and transition metal composite …
Under the condition of a 3:1 mass ratio of ammonium sulfate to lithium battery …
Herein, we propose a novel selective lithium extraction process through low-valent salts assisted roasting and washing to achieve the closed-loop recycling of spent …
For a large amount of spent lithium battery electrode materials (SLBEMs), direct recycling by traditional hydrometallurgy or pyrometallurgy technologies suffers from high cost …
Electrochemical lithium stripping, grounded in the charge and discharge mechanisms of LIBs, employs electrical current instead of chemical reagents to drive reactions, thus facilitating selective lithium-ion removal from positive …
A method for directly roasting and treating waste lithium ion batteries and recovering valuable …
Therefore, a new method for lithium selective extraction from spent lithium-ion battery cathode materials is proposed, aiming at more efficient recovery of valuable metals. …
Electrochemical lithium stripping, grounded in the charge and discharge mechanisms of LIBs, employs electrical current instead of chemical reagents to drive reactions, thus facilitating …
5 · Positive electrodes underwent a rolling press operation, yielding a thickness of 30–33 μm for the pressed electrodes, whereas the non-pressed electrodes maintained a thickness of …
The development of Li ion devices began with work on lithium metal batteries and the discovery of intercalation positive electrodes such as TiS 2 (Product No. 333492) in the 1970s. 2,3 This was followed soon after by Goodenough''s …
1 · The spent lithium battery materials are initially mechanically crushed to obtain fine positive electrode powder. The positive electrode powder is then mixed with coke powder in …
In this study, we determined the oxidation roasting characteristics of spent LiFePO 4 battery electrode materials and applied the iso-conversion rate method and integral master plot …
Under the condition of a 3:1 mass ratio of ammonium sulfate to lithium battery electrode mixed material, roasting temperature of 450 °C, roasting time of 30 min, liquid-solid …