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Novel lithium iron phosphate materials for lithium-ion batteries

Abstract

Conventional energy sources are diminishing and non-renewable, take million years to form and cause environmental degradation. In the 21st century, we have to aim at achieving sustainable, environmentally friendly and cheap energy supply by employing renewable energy technologies associated with portable energy storage devices. Lithium-ion batteries can repeatedly generate clean energy from stored materials and convert reversely electric into chemical energy. The performance of lithium-ion batteries depends intimately on the properties of their materials. Presently used battery electrodes are expensive to be produced; they offer limited energy storage possibility and are unsafe to be used in larger dimensions restraining the diversity of application, especially in hybrid electric vehicles (HEVs) and electric vehicles (EVs). This thesis presents a major progress in the development of LiFePO4 as a cathode material for lithium-ion batteries. Using simple procedure, a completely novel morphology has been synthesized (mesocrystals of LiFePO4) and excellent electrochemical behavior was recorded (nanostructured LiFePO4). The newly developed reactions for synthesis of LiFePO4 are single-step processes and are taking place in an autoclave at significantly lower temperature (200 deg. C) compared to the conventional solid-state method (multi-step and up to 800 deg. C). The use of inexpensive environmentally benign precursors offers a green  More>>
Authors:
Publication Date:
Jun 15, 2011
Product Type:
Thesis/Dissertation
Report Number:
ETDE-DE-2739
Resource Relation:
Other Information: TH: Diss. (Dr.rer.nat.)
Subject:
25 ENERGY STORAGE; LITHIUM PHOSPHATES; IRON PHOSPHATES; CATHODES; CAPACITY; ELECTRIC BATTERIES; SYNTHESIS; NANOSTRUCTURES; MORPHOLOGY
OSTI ID:
21595061
Research Organizations:
Potsdam Univ. (Germany). Mathematisch-Naturwissenschaftliche Fakultaet
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
TRN: DE12G9738
Availability:
Commercial reproduction prohibited; OSTI as DE21595061
Submitting Site:
DE
Size:
106 pages
Announcement Date:
Sep 07, 2012

Citation Formats

Popovic, Jelena. Novel lithium iron phosphate materials for lithium-ion batteries. Germany: N. p., 2011. Web.
Popovic, Jelena. Novel lithium iron phosphate materials for lithium-ion batteries. Germany.
Popovic, Jelena. 2011. "Novel lithium iron phosphate materials for lithium-ion batteries." Germany.
@misc{etde_21595061,
title = {Novel lithium iron phosphate materials for lithium-ion batteries}
author = {Popovic, Jelena}
abstractNote = {Conventional energy sources are diminishing and non-renewable, take million years to form and cause environmental degradation. In the 21st century, we have to aim at achieving sustainable, environmentally friendly and cheap energy supply by employing renewable energy technologies associated with portable energy storage devices. Lithium-ion batteries can repeatedly generate clean energy from stored materials and convert reversely electric into chemical energy. The performance of lithium-ion batteries depends intimately on the properties of their materials. Presently used battery electrodes are expensive to be produced; they offer limited energy storage possibility and are unsafe to be used in larger dimensions restraining the diversity of application, especially in hybrid electric vehicles (HEVs) and electric vehicles (EVs). This thesis presents a major progress in the development of LiFePO4 as a cathode material for lithium-ion batteries. Using simple procedure, a completely novel morphology has been synthesized (mesocrystals of LiFePO4) and excellent electrochemical behavior was recorded (nanostructured LiFePO4). The newly developed reactions for synthesis of LiFePO4 are single-step processes and are taking place in an autoclave at significantly lower temperature (200 deg. C) compared to the conventional solid-state method (multi-step and up to 800 deg. C). The use of inexpensive environmentally benign precursors offers a green manufacturing approach for a large scale production. These newly developed experimental procedures can also be extended to other phospho-olivine materials, such as LiCoPO4 and LiMnPO4. The material with the best electrochemical behavior (nanostructured LiFePO4 with carbon coating) was able to deliver a stable 94% of the theoretically known capacity.}
place = {Germany}
year = {2011}
month = {Jun}
}