Lithium iron phosphate/carbon nanocomposite film cathodes for high energy lithium ion batteries

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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Furnace Temperature and Atmosphere Influences on Producing Lithium Iron Phosphate (LiFePO4) Powders for Lithium-Ion Batteries

Conveyor Belt Furnace Thermal Processing ◽

10.1007/978-3-319-69730-7_15 ◽

2017 ◽

pp. 113-121

Author(s):

Jinlong Xu ◽

Joyce Zhang ◽

Ken Kuang

Keyword(s):

Lithium Ion Batteries ◽

Lithium Iron Phosphate ◽

Lithium Ion ◽

Iron Phosphate ◽

Furnace Temperature

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Iron Phosphates as Cathodes of Lithium-Ion Batteries

MRS Proceedings ◽

10.1557/proc-0973-bb05-01 ◽

2006 ◽

Vol 973 ◽

Author(s):

Shijun Wang ◽

M. Stanley Whittingham

Keyword(s):

Lithium Ion Batteries ◽

Lithium Iron Phosphate ◽

Low Cost ◽

Lithium Ion ◽

Iron Phosphate ◽

Environmentally Benign ◽

Iron Phosphates ◽

Electrochemical Capacity ◽

High Theoretical Capacity ◽

Olivine Structure

ABSTRACTThis study focusses on optimizing the parameters of the hydrothermal synthesis to produce iron phosphates for lithium ion batteries, with an emphasis on pure LiFePO4 with the olivine structure and compounds containing a higher iron:phosphate ratio. Lithium iron phosphate (LiFePO4) is a promising cathode candidate for lithium ion batteries due to its high theoretical capacity, environmentally benign and the low cost of starting materials. Well crystallized LiFePO4 can be successfully synthesized at temperatures above 150 °C. The addition of a reducing agent, such as hydrazine, is essential to minimize the oxidation of ferrous (Fe2+) to ferric (Fe3+) in the final compound. The morphology of LiFePO4 is highly dependent on the pH of the initial solution. This study also investigated the lipscombite iron phosphates of formula Fe1.33PO4OH. This compound has a log-like structure formed by Fe-O octahedral chains. The chains are partially occupied by the Fe3+ sites, and these iron atoms and some of the vacancies can be substituted by other cations. Most of the protons can be ion-exchanged for lithium, and the electrochemical capacity is much increased.

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Synthesis and Characterization of Mg and Ti Ions Co-Doped Lithium Iron Phosphate and Its Lithium-Ion Batteries

Acta Physico-Chimica Sinica ◽

10.3866/pku.whxb201207043 ◽

2012 ◽

Vol 28 (09) ◽

pp. 2084-2090 ◽

Cited By ~ 7

Author(s):

WANG Zhen-Po ◽

◽

LIU Wen ◽

WANG Yue ◽

ZHAO Chun-Song ◽

...

Keyword(s):

Lithium Ion Batteries ◽

Lithium Iron Phosphate ◽

Lithium Ion ◽

Iron Phosphate ◽

Synthesis And Characterization ◽

Co Doped

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Evaluating the capacity ratio and prelithiation strategies for extending cyclability in porous silicon composite anodes and lithium iron phosphate cathodes for high capacity lithium-ion batteries

Journal of Energy Storage ◽

10.1016/j.est.2020.101268 ◽

2020 ◽

Vol 28 ◽

pp. 101268 ◽

Cited By ~ 3

Author(s):

Botao Farren Song ◽

Abirami Dhanabalan ◽

Sibani Lisa Biswal

Keyword(s):

Porous Silicon ◽

Lithium Ion Batteries ◽

Lithium Iron Phosphate ◽

High Capacity ◽

Lithium Ion ◽

Iron Phosphate ◽

Capacity Ratio ◽

Composite Anodes

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Properties of lithium iron phosphate prepared by biomass-derived carbon coating for flexible lithium ion batteries

Electrochimica Acta ◽

10.1016/j.electacta.2019.01.057 ◽

2019 ◽

Vol 300 ◽

pp. 18-25 ◽

Cited By ~ 13

Author(s):

Hye-Jung Kim ◽

Geun-Hyeong Bae ◽

Sang-Min Lee ◽

Jou-Hyeon Ahn ◽

Jae-Kwang Kim

Keyword(s):

Lithium Ion Batteries ◽

Carbon Coating ◽

Lithium Iron Phosphate ◽

Lithium Ion ◽

Iron Phosphate

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An Overview of Lithium-Ion Battery Cathode Materials

MRS Proceedings ◽

10.1557/opl.2011.1363 ◽

2011 ◽

Vol 1363 ◽

Cited By ~ 1

Author(s):

Yixu Wang ◽

Hsiao-Ying Shadow Huang

Keyword(s):

Energy Storage ◽

Lithium Ion Battery ◽

Cathode Materials ◽

Lithium Iron Phosphate ◽

Lithium Ion ◽

Iron Phosphate ◽

High Energy ◽

Rechargeable Batteries ◽

Environmental Benefits ◽

Energy Storage Devices

ABSTRACTThe need for the development and deployment of reliable and efficient energy storage devices, such as lithium-ion rechargeable batteries, is becoming increasingly important due to the scarcity of petroleum. In this work, we provide an overview of commercially available cathode materials for Li-ion rechargeable batteries and focus on characteristics that give rise to optimal energy storage systems for future transportation modes. The study shows that the development of lithium-iron-phosphate (LiFePO4) batteries promises an alternative to conventional lithiumion batteries, with their potential for high energy capacity and power density, improved safety, and reduced cost. This work contributes to the fundamental knowledge of lithium-ion battery cathode materials and helps with the design of better rechargeable batteries, and thus leads to economic and environmental benefits.

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