scholarly journals Recovering Lithium from the Cathode Active Material in Lithium-Ion Batteries via Thermal Decomposition

Metals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 433
Author(s):  
Shunsuke Kuzuhara ◽  
Mina Ota ◽  
Fuka Tsugita ◽  
Ryo Kasuya
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Fluoride ◽  
Active Material ◽  
Lithium Ion ◽  
Lithium Carbonate ◽  
A Value ◽  
Flow Test ◽  
Percent Recovery ◽  
Co2 Flow ◽  
Recovered Material

In this study, calcination tests were performed on a mixed sample of lithium cobalt oxide and activated carbon at 300–1000 C under an argon atmosphere. The tests were conducted to discover an effective method for recovering lithium and cobalt from the cathode active material used in lithium-ion batteries. Additionally, the effect of soluble fluorine on the purification of lithium carbonate was investigated by the addition of lithium fluoride to an aqueous lithium hydroxide solution and a CO2 flow test was performed. The lithium recovery was ≥90% when the calcination occurred at temperatures of 500–600 C. However, the percent recovery decreased at temperatures ≥700 C. It was demonstrated that in order to increase the recovery while maintaining 99% purity of lithium carbonate in the recovered material, it was imperative to increase the temperature of the solution and to limit the F/Li ratio (mass%/mass%) in the solution to a value that did not exceed 0.05.

Research Progress and Application of Modified Silicon-Based Anode Materials for Lithium-Ion Batteries

2021 ◽  
Vol 1036 ◽  
pp. 35-44
Author(s):  
Ling Fang Ruan ◽  
Jia Wei Wang ◽  
Shao Ming Ying
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Volume Expansion ◽  
Anode Materials ◽  
Active Material ◽  
Three Dimensional ◽  
Lithium Ion ◽  
Research Progress ◽  
Ion Intercalation ◽  
Silicon Based

Silicon-based anode materials have been widely discussed by researchers because of its high theoretical capacity, abundant resources and low working voltage platform,which has been considered to be the most promising anode materials for lithium-ion batteries. However,there are some problems existing in the silicon-based anode materials greatly limit its wide application: during the process of charge/discharge, the materials are prone to about 300% volume expansion, which will resultin huge stress-strain and crushing or collapse on the anods; in the process of lithium removal, there is some reaction between active material and current collector, which creat an increase in the thickness of the solid phase electrolytic layer(SEI film); during charging and discharging, with the increase of cycle times, cracks will appear on the surface of silicon-based anode materials, which will cause the batteries life to decline. In order to solve these problems, firstly, we summarize the design of porous structure of nanometer sized silicon-based materials and focus on the construction of three-dimensional structural silicon-based materials, which using natural biomass, nanoporous carbon and metal organic framework as structural template. The three-dimensional structure not only increases the channel of lithium-ion intercalation and the rate of ion intercalation, but also makes the structure more stable than one-dimensional or two-dimensional. Secondly, the Si/C composite, SiOx composite and alloying treatment can improve the volume expansion effection, increase the rate of lithium-ion deblocking and optimize the electrochemical performance of the material. The composite materials are usually coated with elastic conductive materials on the surface to reduce the stress, increase the conductivity and improve the electrochemical performance. Finally, the future research direction of silicon-based anode materials is prospected.

Electrochemical Properties of Carbon-Coated NbO2 as a Negative Electrode for Lithium-Ion Batteries

2016 ◽  
Vol 724 ◽  
pp. 87-91 ◽  
Author(s):  
Chang Su Kim ◽  
Yong Hoon Cho ◽  
Kyoung Soo Park ◽  
Soon Ki Jeong ◽  
Yang Soo Kim
Keyword(s):  
Electrochemical Properties ◽  
Lithium Ion Batteries ◽  
Ball Milling ◽  
Carbon Coating ◽  
Electrochemical Impedance ◽  
Active Material ◽  
Negative Electrode ◽  
Lithium Ion ◽  
Transfer Resistance ◽  
Carbon Coated

We investigated the electrochemical properties of carbon-coated niobium dioxide (NbO2) as a negative electrode material for lithium-ion batteries. Carbon-coated NbO2 powders were synthesized by ball-milling using carbon nanotubes as the carbon source. The carbon-coated NbO2 samples were of smaller particle size compared to the pristine NbO2 samples. The carbon layers were coated non-uniformly on the NbO2 surface. The X-ray diffraction patterns confirmed that the inter-layer distances increased after carbon coating by ball-milling. This lead to decreased charge-transfer resistance, confirmed by electrochemical impedance spectroscopy, allowing electrons and lithium-ions to quickly transfer between the active material and electrolyte. Electrochemical performance, including capacity and initial coulombic efficiency, was therefore improved by carbon coating by ball-milling.

scholarly journals A Sustainable Process for the Recovery of Valuable Metals from Spent Lithium Ion Batteries by Deep Eutectic Solvents Leaching

2022 ◽  
Vol 5 (1) ◽  
pp. 100
Author(s):  
Lourdes Yurramendi ◽  
Jokin Hidalgo ◽  
Amal Siriwardana
Keyword(s):  
Lithium Ion Batteries ◽  
Choline Chloride ◽  
Active Material ◽  
Lithium Ion ◽  
Deep Eutectic Solvents ◽  
Extraction Yield ◽  
Operating Conditions ◽  
Inorganic Acids ◽  
Additive Type ◽  
Valuable Metals

The feasibility of using low-environmental-impact leaching media to recover valuable metals from lithium ion batteries (LIBs) has been evaluated. Several deep eutectic solvents (DES) were tested as leaching agents in the presence of different type of additives (i.e., H2O2). The optimization of Co recovery was carried out by investigating various operating conditions, such as reaction time, temperature, solid (black mass) to liquid (DES) ratio, additive type, and concentration. Leaching with final selected DES choline chloride (33%), lactic acid (53%), and citric acid (13%) at 55 °C achieved an extraction yield of more than 95% for the cobalt. The leaching mechanism likely begins with the dissolution of the active material in the black mass (BM) followed by chelation of Co(II) with the DES. The results obtained confirm that those leaching media are an eco-friendly alternative to the strong inorganic acids used nowadays.

Investigating the Influence of Different Coating Surface Densities of Electrodes on Electrochemical Performance of Lithium-Ion Batteries

2019 ◽  
Vol 17 (3) ◽  
Author(s):  
Yanping Dang ◽  
Wangyu Liu ◽  
Weigui Xie ◽  
Weiping Qiu
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
Surface Density ◽  
Active Material ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Aluminum Foil ◽  
Coating Surface ◽  
Allowable Range ◽  
Polypropylene Separator

Abstract The anode and cathode pieces are vital components of lithium-ion batteries. The coating surface density of active material is a significant parameter involved during the fabrication of electrodes and has considerable impact on battery performance. In this paper, anode and cathode pieces are prepared with different surface densities within the allowable range. The anode and cathode pieces are first graded respectively and then matched up according to different surface density ranges. Afterward, the electrodes are assembled with commercial polypropylene separator in 18,650 cell case and infused with electrolyte. The cathode is constituted with a mixture of nickel cobalt manganese (NCM) ternary material and lithium manganese oxide coated on aluminum foil, while the anode is composed of graphite coated on copper foil. The electrochemical performance and safety properties were tested to investigate the influence of the coating surface density of electrodes and optimize the electrochemical performance by regulating the matching surface density of electrodes. The results indicate that larger surface density of both cathode and anode can provide better battery consistency, while smaller surface density can contribute to better specific capacity and smaller capacity loss after cycling. Modest cost and superior properties can be achieved for lithium-ion batteries by reasonably matching the surface density of anodes and cathodes pieces.

Lithium Fluoride Coated Silicon Nanocolumns as Anodes for Lithium Ion Batteries

2020 ◽  
Vol 12 (16) ◽  
pp. 18465-18472 ◽  
Author(s):  
Jie Lin ◽  
Hu Peng ◽  
Jun-Hyuk Kim ◽  
Bryan R. Wygant ◽  
Melissa L. Meyerson ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Fluoride ◽  
Lithium Ion

Facile preparation of porous erythrocyte-like CuCo2O4 as active material of lithium ion batteries anode

2019 ◽  
Vol 30 (17) ◽  
pp. 16308-16315
Author(s):  
Hongmei Xu ◽  
Xiaolan Song ◽  
Ying Zhang ◽  
Zhenzhen Qin ◽  
Ting Ma ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Active Material ◽  
Lithium Ion ◽  
Facile Preparation

Decomposition of the fluoroethylene carbonate additive and the glue effect of lithium fluoride products for the solid electrolyte interphase: an ab initio study

2016 ◽  
Vol 18 (12) ◽  
pp. 8643-8653 ◽  
Author(s):  
Yukihiro Okuno ◽  
Keisuke Ushirogata ◽  
Keitaro Sodeyama ◽  
Yoshitaka Tateyama
Keyword(s):  
Solid Electrolyte ◽  
Lithium Ion Batteries ◽  
Electrolyte Solution ◽  
Lithium Fluoride ◽  
Solid Electrolyte Interphase ◽  
Lithium Ion ◽  
Ab Initio Study ◽  
Fluoroethylene Carbonate ◽  
The Stability ◽  
Fluoroethylene Carbonate Additive

Additives in the electrolyte solution of lithium-ion batteries (LIBs) have a large impact on the performance of the solid electrolyte interphase (SEI) that forms on the anode and is a key to the stability and durability of LIBs.

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