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Disordered carbon nanofibers/LiCoPO4 composites as cathode materials for lithium ion batteries

Sarapulova, Angelina ; Mikhailova, Daria ; Schmitt, Ljubomira Ana ; Oswald, Steffen ; Bramnik, Natalia ; Ehrenberg, Helmut (2012)
Disordered carbon nanofibers/LiCoPO4 composites as cathode materials for lithium ion batteries.
In: Journal of Sol-Gel Science and Technology, 62 (1)
doi: 10.1007/s10971-012-2691-0
Article, Bibliographie

Abstract

Single-phase LiCoPO4 nanoparticles were synthesized by solid-state reaction method and subsequent high-energy ball milling. The electrochemical properties of LiCoPO4/Li batteries were analyzed by ac impedance experiments, cyclic voltammetry (CV), and charge/discharge tests. The structural and morphological performance of LiCoPO4 nanoparticles was investigated by X-ray diffraction (XRD), scanning electron microscope (SEM), and transmission electron microscope (TEM). The XRD result demonstrated that LiCoPO4 nanoparticles had an orthorhombic olivine-type structure with a space group of Pmnb. Different conductive additives including acetylene black and carbon black (SP270) were used to fabricate electrodes. The morphologies of the electrodes and different conductive additives were observed by field emission-scanning electron microscopy (FE-SEM). LiCoPO4/Li battery with acetylene black showed the best electrochemical properties, and exhibited a discharge plateau at around 4.7 V with an initial discharge capacity of 110 mAh g−1 at a discharge current density of 0.05 mA cm−2 at 25 °C.

Item Type: Article
Erschienen: 2012
Creators: Sarapulova, Angelina ; Mikhailova, Daria ; Schmitt, Ljubomira Ana ; Oswald, Steffen ; Bramnik, Natalia ; Ehrenberg, Helmut
Type of entry: Bibliographie
Title: Disordered carbon nanofibers/LiCoPO4 composites as cathode materials for lithium ion batteries
Language: English
Date: 7 February 2012
Journal or Publication Title: Journal of Sol-Gel Science and Technology
Volume of the journal: 62
Issue Number: 1
DOI: 10.1007/s10971-012-2691-0
Abstract:

Single-phase LiCoPO4 nanoparticles were synthesized by solid-state reaction method and subsequent high-energy ball milling. The electrochemical properties of LiCoPO4/Li batteries were analyzed by ac impedance experiments, cyclic voltammetry (CV), and charge/discharge tests. The structural and morphological performance of LiCoPO4 nanoparticles was investigated by X-ray diffraction (XRD), scanning electron microscope (SEM), and transmission electron microscope (TEM). The XRD result demonstrated that LiCoPO4 nanoparticles had an orthorhombic olivine-type structure with a space group of Pmnb. Different conductive additives including acetylene black and carbon black (SP270) were used to fabricate electrodes. The morphologies of the electrodes and different conductive additives were observed by field emission-scanning electron microscopy (FE-SEM). LiCoPO4/Li battery with acetylene black showed the best electrochemical properties, and exhibited a discharge plateau at around 4.7 V with an initial discharge capacity of 110 mAh g−1 at a discharge current density of 0.05 mA cm−2 at 25 °C.

Uncontrolled Keywords: Rechargeable batteries - Intercalation - Lithium - Olivine-type structure - Cathode
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Structure Research
Date Deposited: 31 Aug 2012 13:24
Last Modified: 05 Mar 2013 10:02
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