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918059

Sigma-Aldrich

1 M 9,9-dimethylfluorene in THF

a precursor solution to prepare the prelithiation reagent for Si anode

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About This Item

Formule empirique (notation de Hill):
C15H14
Numéro CAS:
4569-45-3
Poids moléculaire :
194.27
Numéro MDL:
MFCD00114670
Code UNSPSC :
12352401
Nomenclature NACRES :
NA.23

Niveau de qualité

100

Forme

liquid

Impuretés

≤1000 ppm H2O

Application(s)

battery manufacturing

Température de stockage

2-8°C

Chaîne SMILES 

CC1(C)C2=C(C=CC=C2)C3=C1C=CC=C3

InChI

1S/C15H14/c1-15(2)13-9-5-3-7-11(13)12-8-4-6-10-14(12)15/h3-10H,1-2H3

Clé InChI

ZHQNDEHZACHHTA-UHFFFAOYSA-N

Application

This product offered here allows an ambient-air-tolerant method for negative electrode prelithiation prior to assembly of Li ion batteries. The redox potential of this product makes it useful for those most reported negative electrodes including Si with high capacities and short processing time. It could not only compensate for the initial active lithium loss, but also enable the pairing with high-capacity lithium-free positive electrodes (e.g. sulfur, oxygen, V2O5 etc.) that requires the supply of Li source from the negative electrode to configure Li ion batteries with high energy densities.
Recommended instructions (this should be a separate document):Soak your electrode with the anode material coated on a copper current collector in this prelithiation reagent for a set amount of time. Discard the solution and then wash your electrode twice with THF. For a 1cm diameter electrode with 1∼3 mg acitve material per cm2, use 0.5∼1 mL of prelithiation solution will be enough. You can use an empty coin cell casing as the treatment vessel. Electrode soaking time is important and may need to be optimized for your application. A good time to try is ∼10 min. Longer prelithiation time may cause eletrode structure deformation, leading to a decreased discharge/charge capacity.

Mention d'avertissement

Danger

Classification des risques

Acute Tox. 4 Oral - Aquatic Chronic 2 - Carc. 2 - Eye Irrit. 2 - Flam. Liq. 2 - STOT SE 3

Organes cibles

Central nervous system, Respiratory system

Risques supp

EUH018,EUH019

Code de la classe de stockage

3 - Flammable liquids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

1.4 °F

Point d'éclair (°C)

-17.0 °C

Certificats d'analyse (COA)

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Consulter la Bibliothèque de documents

High performance lithium-ion and lithium?sulfur batteries using prelithiated phosphorus/carbon composite anode.
Wang G, et al.
Energy Storage Materials, 24, 147-152 (2020)
High performance lithium-ion and lithium−sulfur batteries using prelithiated phosphorus/carbon composite anode..
Wang F, et al.
Energy Storage Materials, 24, 147-152 (2020)
Gongwei Wang et al.
ACS applied materials & interfaces, 11(9), 8699-8703 (2019-02-20)
This study reports an ambient-air-tolerant approach for negative electrode prelithiation by using 1 M lithium-biphenyl (Li-Bp)/tetrahydrofuran (THF) solution as the prelithiation reagent. Key to this strategy are the relatively stable nature of 1 M Li-Bp/THF in ambient air and the

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