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Structural Design of Anode Materials for Li-ion Batteries

Park, Dong-Won and Heim, Christopher and Cañas, Natalia A. and Golla-Schindler, Ute and Wagner, Norbert and Friedrich, K. Andreas (2015) Structural Design of Anode Materials for Li-ion Batteries. Batterieforum 2015, 21.-23. Jan. 2015, Berlin, Deutschland.

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Abstract

Despite commercial success of LIBs for portable electronic devices, their low power density (compared to fossil fuels), and high cost still impede a full market penetration of electric vehicles or of large-scale energy storage systems. To overcome these issues, there has been a noticeable increase in development of alternative anode materials with low cost, enhanced safety, high energy/power density and long-term stability. In recent, the development of metal-based anodes (such as pure metal, metal oxide, and their composite) seems to hold significant promise, but these materials have some serious problems such as volume expansion or low conductivity. Hence, a combination of particle size reduction and carbon coating are regarded as effective ways to enhance anode performance. This work presents our recent efforts to improve the electrochemical properties of LTO and Si-based electrodes as alternative anodes for LIBs. We used a simple sol-gel process for preparing hierarchically porous LTO microspheres coated with carbon. Our investigations also focus on cheap fabrication of silicon (Si) anodes with improved cycle life. Commercial Si powders were processed with a planetary ball mill to alter particle size and structure. The chemical composition, structure, and morphology of hierarchical LTO microspheres and Si-based active materials were characterized by means of x-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy dispersive x-ray spectroscopy (EDX). The electrochemical performances of LTO and Si-based anode, including cycling performances and interface behavior, were also investigated in half cell.

Item URL in elib:https://elib.dlr.de/94924/
Document Type:Conference or Workshop Item (Poster)
Title:Structural Design of Anode Materials for Li-ion Batteries
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Park, Dong-WonDong-Won.Park (at) dlr.deUNSPECIFIED
Heim, ChristopherChristopher.Heim (at) dlr.deUNSPECIFIED
Cañas, Natalia A.natalia.canas (at) dlr.deUNSPECIFIED
Golla-Schindler, Uteute.golla-schindler (at) uni-ulm.deUNSPECIFIED
Wagner, Norbertnorbert.wagner (at) dlr.deUNSPECIFIED
Friedrich, K. Andreasandreas.friedrich (at) dlr.deUNSPECIFIED
Date:21 January 2015
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Anode, silicon, LTO, batteries, structure
Event Title:Batterieforum 2015
Event Location:Berlin, Deutschland
Event Type:national Conference
Event Dates:21.-23. Jan. 2015
HGF - Research field:Energy
HGF - Program:Efficient Energy Conversion and Use (old)
HGF - Program Themes:Fuel Cells (old)
DLR - Research area:Energy
DLR - Program:E EV - Energy process technology
DLR - Research theme (Project):E - Electrochemical Processes (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Cañas, Natalia Andrea
Deposited On:15 Sep 2015 10:34
Last Modified:15 Sep 2015 10:34

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