Poster (Scientific congresses and symposiums)
Recycling of silicon used in solar cells to prepare silicon-carbon composite powders as anode material in li-ion batteries
Eshraghi, Nicolas; Mahmoud, Abdelfattah; Berardo, Loris et al.
2017Skoltech International Conference of Young Scientists « Topical problems of modern electrochemistry and electrochemical materials science »
 

Files


Full Text
Nicolas Eshraghi- SKOLTECH Abstract 2017.pdf
Author postprint (795.91 kB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Si anode; Electrochemistry; recycling
Abstract :
[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 an electrode material for lithium or sodium 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 problem could be solved through the synthesis of Silicon/carbon composites in which the size of the silicon particles and their dispersion must be controlled [1–4]. 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. In the first step, Si wafer pieces are ground to prepare Si powder and then a mixed suspension of Si and an organic carbon source (Acetic acid, Ascorbic acid or Lactose) is spray-dried followed by heat treatment to generate the coverage of silicon particles with carbon (Si@C). In the second step, aqueous suspension of Si@C and graphene/CNT is spray dried and heat treated to obtain the final composite structure. 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).
Disciplines :
Materials science & engineering
Chemistry
Author, co-author :
Eshraghi, Nicolas  ;  Université de Liège > Département de chimie (sciences) > LCIS - GreenMAT
Mahmoud, Abdelfattah  ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Berardo, Loris ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Delaval, Vincent ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Schrijnemakers, Audrey ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Piffet, Caroline  ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Vertruyen, Bénédicte  ;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie inorganique structurale
Cloots, Rudi ;  Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Boschini, Frédéric ;  Université de Liège - ULiège > Plateforme APTIS
Language :
English
Title :
Recycling of silicon used in solar cells to prepare silicon-carbon composite powders as anode material in li-ion batteries
Publication date :
September 2017
Event name :
Skoltech International Conference of Young Scientists « Topical problems of modern electrochemistry and electrochemical materials science »
Event organizer :
SKOLTECH Center for Electrochemical Energy Storage
Event place :
Serpukhov, Moscow region, Russia
Event date :
from 17-09-2017 to 20-09-2017
Audience :
International
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 27 August 2017

Statistics


Number of views
247 (44 by ULiège)
Number of downloads
7 (6 by ULiège)

Bibliography


Similar publications



Contact ORBi