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409324

Sigma-Aldrich

Aluminum iodide

anhydrous, powder, 99.999% trace metals basis

Synonym(s):

Aluminum triiodide, Aluminum(III) iodide

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About This Item

Linear Formula:
AlI3
CAS Number:
Molecular Weight:
407.70
EC Number:
MDL number:
UNSPSC Code:
12352302
PubChem Substance ID:
NACRES:
NA.23

grade

anhydrous

Quality Level

vapor pressure

1 mmHg ( 178 °C)

Assay

99.999% trace metals basis

form

powder

impurities

≤15.0 ppm Trace Metal Analysis

bp

360 °C (lit.)

mp

191 °C (lit.)

density

3.98 g/mL at 25 °C (lit.)

application(s)

battery manufacturing

SMILES string

I[Al](I)I

InChI

1S/Al.3HI/h;3*1H/q+3;;;/p-3

InChI key

CECABOMBVQNBEC-UHFFFAOYSA-K

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General description

Aluminum iodide (AlI3) is a strong Lewis acid that is used as an electrolyte additive in electrochemical energy storage and conversion devices.

Application

Aluminum iodide can be used as:
  • An electrolyte additive for the pretreatment of Li metal electrodes. The addition of AlI3 provides a durable Li interface with high Li cyclability.
  • A homogeneous redox mediator for rechargeable Al-CO2batteries with high discharge voltage and a high capacity. These secondary batteries are promising rechargeable systems for future grid energy storage applications.

Pictograms

Corrosion

Signal Word

Danger

Hazard Statements

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1B

Storage Class Code

8B - Non-combustible corrosive hazardous materials

WGK

WGK 3

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Pretreatment of Li metal anode with electrolyte additive for enhancing Li cycleability
Masashi Ishikawa, et al.
Journal of Power Sources, 146, 199-203 (2005)
Cheap and Environmentally Benign Electrochemical Energy Storage and Conversion Devices Based on AlI3 Electrolytes
Bofei Xue, et al.
Journal of the American Chemical Society, 128, 8720-8721 (2006)
A Secondary Al?CO2 Battery Enabled by Aluminum Iodide as a Homogeneous Redox Mediator
Christopher Fetrow, et al.
ACS Applied Materials & Interfaces, 15, 12908-12914 (2023)

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