Effect of carbon content and calcination temperature on the electrochemical performance of lithium iron phosphate/carbon composites as cathode materials for lithium-ion batteries

2013 ◽  
Vol 24 (3) ◽  
pp. 593-598 ◽  
Author(s):  
Xiaodong Wang ◽  
Ke Cheng ◽  
Jingwei Zhang ◽  
Laigui Yu ◽  
Jianjun Yang
2020 ◽  
Vol 56 (6) ◽  
pp. 648-656
Author(s):  
V. V. Ozerova ◽  
I. A. Stenina ◽  
A. A. Kuz’mina ◽  
T. L. Kulova ◽  
A. B. Yaroslavtsev

2021 ◽  
Author(s):  
H. Q. Wang ◽  
Anjie Lai ◽  
Dequan Huang ◽  
Youqi Chu ◽  
Si-Jiang Hu ◽  
...  

Lithium iron phosphate (LFP) has become one of the current mainstream cathode materials due to its high safety and low price. Most methods (e.g. ion doping, carbon coating and particle...


2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Dhevathi Rajan Rajagopalan Kannan ◽  
Pranaya Krishna Terala ◽  
Pedro L. Moss ◽  
Mark H. Weatherspoon

In this paper, investigation on the effect of separator thickness and porosity on the performance of Lithium Iron Phosphate batteries are analyzed. In recent years there have been intensive efforts to improve the performance of the lithium-ion batteries. Separators are important component of lithium-ion batteries since they isolate the electrodes and prevent electrical short-circuits. Separators are also used as an electrolyte reservoir which is used as a medium for ions transfer during charge and discharge. Electrochemical performance of the batteries is highly dependent on the material, structure, and separators used. This paper compares the effects of material properties and the porosity of the separator on the performance of lithium-ion batteries. Four different separators, polypropylene (PP) monolayer and polypropylene/polyethylene/polypropylene (PP/PE/PP) trilayer, with the thickness of 20 μm and 25 μm and porosities of 41%, 45%, 48%, and 50% were used for testing. It was found that PP separator with porosity of 41% and PP/PE/PP separator of 45% porosity perform better compared to other separators.


2020 ◽  
Vol 32 (12) ◽  
pp. 2982-2999
Author(s):  
Zolani Myalo ◽  
Chinwe Oluchi Ikpo ◽  
Assumpta Chinwe Nwanya ◽  
Miranda Mengwi Ndipingwi ◽  
Samantha Fiona Duoman ◽  
...  

Metals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 149
Author(s):  
Alexandra Holzer ◽  
Stefan Windisch-Kern ◽  
Christoph Ponak ◽  
Harald Raupenstrauch

The bottleneck of recycling chains for spent lithium-ion batteries (LIBs) is the recovery of valuable metals from the black matter that remains after dismantling and deactivation in pre‑treatment processes, which has to be treated in a subsequent step with pyrometallurgical and/or hydrometallurgical methods. In the course of this paper, investigations in a heating microscope were conducted to determine the high-temperature behavior of the cathode materials lithium cobalt oxide (LCO—chem., LiCoO2) and lithium iron phosphate (LFP—chem., LiFePO4) from LIB with carbon addition. For the purpose of continuous process development of a novel pyrometallurgical recycling process and adaptation of this to the requirements of the LIB material, two different reactor designs were examined. When treating LCO in an Al2O3 crucible, lithium could be removed at a rate of 76% via the gas stream, which is directly and purely available for further processing. In contrast, a removal rate of lithium of up to 97% was achieved in an MgO crucible. In addition, the basic capability of the concept for the treatment of LFP was investigated whereby a phosphorus removal rate of 64% with a simultaneous lithium removal rate of 68% was observed.


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