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914681

Sigma-Aldrich

Aluminum oxide milled nanofibers alpha alumina

Synonym(s):

Al2O3, Nanofibrous inorganic powder

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About This Item

Linear Formula:
Al2O3
CAS Number:
1344-28-1
UNSPSC Code:
12352311
NACRES:
NA.23

description

Thermal Conductivity 30 Wm-1K-1

Quality Level

100

form

nanofiber
powder (fluffy)

fiber diam. × L

300-900 nm ± 100 nm × 2-10 μm , Structure: Polycystalline nanofibers

surface area

30-50 m2/g

color

white

primary crystallite size

(alpha)

conductivity

<10^-16 S/cm (Electrical)

mp

2072 °C

InChI

1S/2Al.3O/q2*+3;3*-2

InChI key

PNEYBMLMFCGWSK-UHFFFAOYSA-N

Application

Alpha alumina nanofibers has applications in as an abrasive, advanced ceraminc material, electrical components, electrical insulator, thermal conductor, and as nanocomposities.

Storage Class Code

13 - Non Combustible Solids

WGK

nwg

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PGM and PGM-free Catalysts for Polymer Electrolyte Membrane Fuel Cells

In this review, we highlight the recent progress in both PGM and PGM-free ORR catalysts for PEMFC applications. In addition, the remaining challenges in ORR catalyst development that meet the targets of PEMFC applications beyond the preliminary half-cell test are also discussed.

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