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| | Tris(trimethylsilyl) borate Basic information |
| | Tris(trimethylsilyl) borate Chemical Properties |
| Melting point | -35°C | | Boiling point | 186 °C (lit.) | | density | 0.831 g/mL at 25 °C (lit.) | | refractive index | n20/D 1.386(lit.) | | Fp | 109 °F | | storage temp. | Inert atmosphere,2-8°C | | form | Liquid | | Specific Gravity | 0.828 | | color | Clear colorless | | Sensitive | Moisture Sensitive | | Hydrolytic Sensitivity | 7: reacts slowly with moisture/water | | BRN | 1772733 | | InChI | InChI=1S/C9H27BO3Si3/c1-14(2,3)11-10(12-15(4,5)6)13-16(7,8)9/h1-9H3 | | InChIKey | YZYKZHPNRDIPFA-UHFFFAOYSA-N | | SMILES | [Si](C)(C)(C)OB(O[Si](C)(C)C)O[Si](C)(C)C | | CAS DataBase Reference | 4325-85-3 | | EPA Substance Registry System | Silanol, trimethyl-, triester with boric acid (H3BO3) (4325-85-3) |
| Hazard Codes | Xi | | Risk Statements | 10-36/37/38 | | Safety Statements | 26-36 | | RIDADR | UN 1993 3/PG 3 | | WGK Germany | 3 | | F | 10-21 | | TSCA | TSCA listed | | HazardClass | 3 | | PackingGroup | III | | HS Code | 29319090 |
| | Tris(trimethylsilyl) borate Usage And Synthesis |
| Chemical Properties | Clear colorless liquid | | Uses | Tris(trimethylsilyl) borate is used as intermediate of organic synthesis and additive of lithium battery electrolyte. | | Properties and Applications | Tris (trimethylsilyl) borate (TMSB) has been investigated as a protective cathode additive for increasing the cycle performance of several high-voltage cathode materials, including LiMn2O4 (4.5 V), LiNi0.5Co0.2Mn0.3O2 (4.4 V), LiNi0.5Mn1.5O4 (4.9 V) and layered lithium-rich oxide cathode Li[Li0.2Mn0.54Ni0.13Co0.13]O2 (4.8 V). TMSB can also be applied as an effective electrolyte additive to raise the cycle life of LiMn2O4 and LiFePO4 cathode Li-ion batteries at 55 °C. Compared with tris(trimethylsilyl)phosphate (TMSP), the CEI film generated from TMSB, which contains B and Si-rich compounds, shows a better ability to restrain the growth of interfacial resistance during cycling. The results reveal that the TMSB additive is easy to complex with Li+ ions, thus weakening the intermolecular force between Li+ ions and ethylene carbonate solvent, which is beneficial for the cycle performance. Besides, the changed Li+ solvation structure results in a thin and dense CEI film containing compounds with Si–O and B–O bonds, which favors the transfer of Li+ ions[1–2]. | | References |
[1] Yan Chunfeng . “Tris(trimethylsilyl) borate as an electrolyte additive for high-voltage lithium-ion batteries using LiNi1/3Mn1/3Co1/3O2 cathode.” Journal of Energy Chemistry 25 4 (2016): Pages 659-666.
[2] Jie Wang . “Adjusting the solvation structure with tris(trimethylsilyl)borate additive to improve the performance of LNCM half cells.”Journal of Energy Chemistry 67 (2022): Pages 55-64.
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| | Tris(trimethylsilyl) borate Preparation Products And Raw materials |
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