Reference : Preparation and characterization of Silicon-carbon composite powders using recycled S...
Scientific congresses and symposiums : Poster
Engineering, computing & technology : Materials science & engineering
Physical, chemical, mathematical & earth Sciences : Chemistry
http://hdl.handle.net/2268/213830
Preparation and characterization of Silicon-carbon composite powders using recycled Silicon from solar cells as anode material in Li-ion batteries
English
Eshraghi, Nicolas mailto [Université de Liège > Département de chimie (sciences) > LCIS - GreenMAT >]
Mahmoud, Abdelfattah mailto [Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT >]
Berardo, Loris mailto [Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT >]
Delaval, Vincent mailto [Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT >]
Schrijnemakers, Audrey mailto [Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT >]
Piffet, Caroline mailto [Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT >]
Vertruyen, Bénédicte mailto [Université de Liège - ULiège > Département de chimie (sciences) > Chimie inorganique structurale >]
Cloots, Rudi mailto [Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT >]
Boschini, Frédéric mailto [Université de Liège - ULiège > > Plateforme APTIS >]
Sep-2017
No
No
International
The 19th International Sol-Gel Conference
03-09-2017 to 08-09-2017
University of Liege
Department of Chemistry - Research group in Energy and Environment from Materials (Greenmat)
Department of Chemical Engineering - Nanomaterials, Catalysis & Electrochemistry (NCE)
Liege
Belgium
[en] Si anode ; solar cell recycling ; composite anodes
[en] Currently, silicon (Si) coming from the recycling of solar cells is a non-valued fraction. The principal aim
of this work is the development of silicon recovered during the dismantling of solar panels as electrode
material for Li-ion batteries. The main technological challenge associated with the use of silicon in this
type of application is to control the volume expansion during charge/discharge cycles. This drawback
could be avoided through the formation of Silicon/carbon composites in which the size of the silicon
particles and their dispersion must be controlled.
In this research, we develop a carbon matrix consisting of graphene or carbon nanotubes (CNT) that
allow the incorporation of silicon particles coated with a carbon layer (Si@C/C). The process is divided
in two main steps : I) the grinding of leached Si wafer pieces in order to extract pure Si powder and then
a mixed aqueous suspension of this recycled Si and an organic carbon source (Acetic acid, Ascorbic acid
or Lactose) is spray-dried followed by heat treatment to generate the coating of silicon particles with
carbon (Si@C). Then, II) aqueous suspension of Si@C and graphene/CNT is spray dried and calcined to
obtain the final composite structure (Si@C/C).
The morphology of composite materials is analyzed by scanning electron microscopy (SEM) and
transmission electron microscopy (TEM). Electrochemical performance of Si@C/C composites are
characterized by galvanostatic charge-discharge cycling and electrochemical impedance spectroscopy
(EIS).
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS ; Fonds pour la formation à la Recherche dans l'Industrie et dans l'Agriculture (Communauté française de Belgique) - FRIA
FRIA 1.E118.16
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/213830
http://www.solgel2017liege.com/

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
Nicolas Eshraghi Sol-Gel 2017.pdfAuthor postprint318.07 kBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.