MMDS (Methylene Methanedisulfonate, 99.5%) as Battery Electrolyte Additive, 25 g/bottle, CBEAMMDS
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MMDS (Methylene Methanedisulfonate) is a powerful and highly effective sulfur-containing electrolyte additive used in low concentrations (typically 0.5 to 2.0 wt%) to dramatically improve the performance of high-voltage lithium-ion batteries (LIBs). MMDS is prized because it reacts preferentially at both the positive and negative electrodes, stabilizing the entire electrochemical cell. The additive is critical for enhancing the cycling stability and reducing the impedance of cells, particularly those charged above 4.2 V.
| Part Number |
CBEAMMDS (C-BEA-MMDS) |
| CAS |
99591-74-9 |
| Chemical Formula |
C2H4O6S2  |
| Appearance |
White powder |
| Purity |
99.5% (Battery Grade) Free Acid<100 ppm, H20 level < 200 ppm |
| Molecular Weight | 188.18 g/mol |
| Density | 1.851 g/cm3 |
| Melting Point | ~150-152 °C (lit.) |
| Package Size | 25 g/bottle |
Notes: Please store the MMDS powder in the glovebox.
References:
- X. Zuo, et al. High-voltage performance of LiCoO2/graphite batteries with methylene methanedisulfonate as electrolyte additive, J. Power Sources, 2012 219, 94-99.
- J. Xia, et al. Study of Methylene Methanedisulfonate as an Additive for Li-Ion Cells, J. Electrochem. Soc., J. Electrochem. Soc., 2014, 161 A84.