CAS 4325-85-3 Tris(Trimethylsilyl) Borate - Materials / Alfa Chemistry

NAVIGATION

Tris(Trimethylsilyl) Borate

PRICE INQUIRY

Catalog Number

ACM4325853-1

CAS Number

4325-85-3

Product Name

Tris(Trimethylsilyl) Borate

Structure

Category

Salt

Synonyms

Boric acid tris(trimethylsilyl) ester
Tris(trimethylsiloxy)boron

IUPAC Name

tris(trimethylsilyl) borate

Molecular Weight

278.38 g/mol

Molecular Formula

[(CH3)3SiO]3B

Canonical SMILES

B(O[Si](C)(C)C)(O[Si](C)(C)C)O[Si](C)(C)C

InChI

InChI=1S/C9H27BO3Si3/c1-14(2,3)11-10(12-15(4,5)6)13-16(7,8)9/h1-9H3

InChI Key

YZYKZHPNRDIPFA-UHFFFAOYSA-N

Purity

0.98

Application

Tris(Trimethylsilyl) Borate (TMSB) is a versatile compound primarily used in organic synthesis and as an additive for lithium battery electrolytes. Its purpose is to enhance the performance and longevity of high-voltage cathode materials, such as LiMn2O4, LiNi0.5Co0.2Mn0.3O2, LiNi0.5Mn1.5O4, and Li[Li0.2Mn0.54Ni0.13Co0.13]O2, by increasing their cycle performance. Additionally, TMSB serves as an effective electrolyte additive, significantly extending the cycle life of LiMn2O4 and LiFePO4 cathode Li-ion batteries at elevated temperatures like 55 °C. One of the key advantages of TMSB over alternatives like tris(trimethylsilyl)phosphate (TMSP) is its ability to form a B and Si-rich CEI film that effectively inhibits the growth of interfacial resistance during battery cycling. TMSB facilitates the complexation with Li+ ions, which diminishes the intermolecular forces between these ions and the ethylene carbonate solvent, thus improving overall cycle performance. Moreover, it alters the Li+ solvation structure, resulting in the formation of a thin, dense CEI film containing Si-O and B-O bonds, optimizing Li+ ion transfer.

Storage

Moisture Sensitive. Ambient temperatures.

Complexity

180

Covalently-Bonded Unit Count

Exact Mass

278.136104g/mol

Formal Charge

Heavy Atom Count

Monoisotopic Mass

278.136104g/mol

Rotatable Bond Count