Li2S as a cathode additive to compensate for the irreversible capacity loss of lithium iron phosphate batteries

Ionics ◽  
2022 ◽  
Author(s):  
Ruqian Ding ◽  
Yi Zheng ◽  
Guangchuan Liang
Keyword(s):  
Lithium Iron Phosphate ◽  
Iron Phosphate ◽  
Irreversible Capacity ◽  
Capacity Loss ◽  
Cathode Additive

scholarly journals Determining the Limits and Effects of High-Rate Cycling on Lithium Iron Phosphate Cylindrical Cells

Batteries ◽  
2020 ◽  
Vol 6 (4) ◽  
pp. 57
Author(s):  
Justin Holloway ◽  
Faduma Maddar ◽  
Michael Lain ◽  
Melanie Loveridge ◽  
Mark Copley ◽  
...  
Keyword(s):  
High Performance ◽  
Lithium Iron Phosphate ◽  
Iron Phosphate ◽  
High Rate ◽  
Catastrophic Failure ◽  
Safety Factors ◽  
Battery Cell ◽  
Capacity Loss ◽  
Maximum Current ◽  
Current Operation

The impacts on battery cell ageing from high current operation are investigated using commercial cells. This study utilised two tests–(i) to establish the maximum current limits before cell failure and (ii) applying this maximum current until cell failure. Testing was performed to determine how far cycling parameters could progress beyond the manufacturer’s recommendations. Current fluxes were increased up to 100 C cycling conditions without the cell undergoing catastrophic failure. Charge and discharge current capabilities were possible at magnitudes of 1.38 and 4.4 times, respectively, more than that specified by the manufacturer’s claims. The increased current was used for longer term cycling tests to 500 cycles and the resulting capacity loss and resistance increase was dominated by thermal fatigue of the electrodes. This work shows that there is a discrepancy between manufacturer-stated current limits and actual current limits of the cell, before the cell undergoes catastrophic failure. This presumably is based on manufacturer-defined performance and lifetime criteria, as well as prioritised safety factors. For certain applications, e.g., where high performance is needed, this gap may not be suitable; this paper shows how this gap could be narrowed for these applications using the testing described herein.

Preparation of Lithium Iron Phosphate-Carbon Composite as a Cathode for Lithium Ion Battery

2019 ◽  
Vol 966 ◽  
pp. 392-397
Author(s):  
Iman Rahayu ◽  
Atiek Rostika Noviyanti ◽  
Diana Rakhmawaty ◽  
Anni Anggraeni ◽  
Husein H. Bahti ◽  
...  
Keyword(s):  
Lithium Ion Battery ◽  
Lithium Iron Phosphate ◽  
Sintering Temperature ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Iron Phosphate ◽  
Carbon Composite ◽  
Capacity Loss ◽  
The Stability

Lithium iron phospate-carbon composite (LiFePO4/C) was successfully synthesized with various sintering temperature in order to find best synthesis condition resulting high quality of LiFePO4/C that can be applied for environmentally friendly of cathode in lithium ion battery. It is found that the specific capacity and the stability capacity of LiFePO4/C were improved to 17.6 mAh and 40.3% of capacity loss, respectively.

Graphenised Lithium Iron Phosphate and Lithium Manganese Silicate Hybrid Cathodes: Potentials for Application in Lithium‐ion Batteries

2020 ◽  
Vol 32 (12) ◽  
pp. 2982-2999
Author(s):  
Zolani Myalo ◽  
Chinwe Oluchi Ikpo ◽  
Assumpta Chinwe Nwanya ◽  
Miranda Mengwi Ndipingwi ◽  
Samantha Fiona Duoman ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Iron Phosphate ◽  
Lithium Ion ◽  
Iron Phosphate ◽  
Manganese Silicate ◽  
Lithium Manganese

scholarly journals A Novel Pyrometallurgical Recycling Process for Lithium-Ion Batteries and Its Application to the Recycling of LCO and LFP

Metals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 149
Author(s):  
Alexandra Holzer ◽  
Stefan Windisch-Kern ◽  
Christoph Ponak ◽  
Harald Raupenstrauch
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Iron Phosphate ◽  
Process Development ◽  
Removal Rate ◽  
Continuous Process ◽  
Lithium Ion ◽  
Iron Phosphate ◽  
Recycling Process ◽  
Subsequent Step ◽  
Pre Treatment

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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