TMSB (Tris(trimethylsilyl) Borate, 99.9%) as Battery Electrolyte Additive, 25 g/bottle, CBEATMSB

TMSB additives perform a dual-functional role in the battery cell by acting as both an acid scavenger and an interphase-forming agent. TMSB additives help form stable protective layers on both electrodes.

(1) Cathode Electrolyte Interphase (CEI): TMSB is often preferentially oxidized at the high potential of the cathode surface (especially >4.3 V), forming a thin, stable Si- and B-rich protective film. This CEI acts as a barrier, suppressing the oxidative decomposition of the main carbonate solvents and reducing impedance buildup, which is crucial for high voltage cycling stability. 

(2) Solid Electrolyte Interphase (SEI): Research shows that TMSB can also contribute to forming a more stable and less resistive SEI on the graphite anode, particularly at elevated temperatures. This stabilizes the anode and reduces resistance to lithium-ion transport.

Part Number	CBEATMSB (C-BEA-TMSB)
CAS	4325-85-3
Chemical Formula	[(CH3)3SiO]3B
Appearance	Colorless Liquid
Purity	99.0% (Battery Grade)
Molecular Weight	278.38 g/mol
Boiling Point	~186 °C/720 mmHg (lit.)
Density	0.831 g/mL at 25 °C (lit.)
Package Size	25 g/bottle

Notes: Please store the TMSB solution in the glovebox due to its sensitivity to humidity and oxygen 

References: 

1. Z. Cai, et al. Tris(trimethylsilyl) borate as electrolyte additive to improve performance of lithium-ion batteries, J. Power Sources, 2012, 202, 341-346.
2. K. Wang, et al. A comparative study of Si-containing electrolyte additives for lithium ion battery: Which one is better and why is it better, J. Power Sources, 2017, 342, 677-684.