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Design-Considerations regarding Silicon/Graphite and Tin/Graphite Composite Electrodes for Lithium-Ion Batteries

Otero, Manuel and Heim, Christopher and Leiva, Ezequiel and Wagner, Norbert and Friedrich, Kaspar Andreas (2018) Design-Considerations regarding Silicon/Graphite and Tin/Graphite Composite Electrodes for Lithium-Ion Batteries. Scientific Reports, 8 (1). Nature Publishing Group. DOI: 10.1038/s41598-018-33405-y ISSN 2045-2322

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Official URL: http://www.nature.com/articles/s41598-018-33405-y

Abstract

An analytical model is proposed to investigate properties of composite electrodes that utilize more than one active material. We demonstrate how the equations can be applied to aid in the design of electrodes by comparing silicon-graphite and tin-graphite composite negative electrodes as examples with practical relevance. Based on simple assumptions, the results show how volume expansion tolerance and initial porosity are important factors for the achievable gravimetric and volumetric capacities as well as volumetric energy density. A Si-alloy/graphite composite electrode is used as an experimental system to corroborate the formulated analysis. Kinetic limitations are also addressed based on a novel heuristic approach.

Item URL in elib:https://elib.dlr.de/122811/
Document Type:Article
Additional Information:Publikation in Kooperation mit der Universität Cordoba, Argentinien.
Title:Design-Considerations regarding Silicon/Graphite and Tin/Graphite Composite Electrodes for Lithium-Ion Batteries
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Otero, Manueloteromn (at) gmail.comUNSPECIFIED
Heim, ChristopherChristopher.Heim (at) dlr.deUNSPECIFIED
Leiva, EzequielUniversidad Nacional de CordobaUNSPECIFIED
Wagner, Norbertnorbert.wagner (at) dlr.deUNSPECIFIED
Friedrich, Kaspar AndreasAndreas.Friedrich (at) dlr.deUNSPECIFIED
Date:26 October 2018
Journal or Publication Title:Scientific Reports
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:8
DOI :10.1038/s41598-018-33405-y
Publisher:Nature Publishing Group
Series Name:Nature Scientific Reports
ISSN:2045-2322
Status:Published
Keywords:Battery, Model, Silicon, Electrode, Li-Ion
HGF - Research field:Energy
HGF - Program:Storage and Cross-linked Infrastructures
HGF - Program Themes:Electrochemical Energy Storage
DLR - Research area:Energy
DLR - Program:E SP - Energy Storage
DLR - Research theme (Project):E - Electrochemical Prcesses (Batteries)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Electrochemical Energy Technology
Deposited By: Heim, Christopher
Deposited On:04 Dec 2018 16:05
Last Modified:04 Dec 2018 16:05

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