Methylene methanedisulfonate

In 2002, NEC Corporation discovered that cyclic alkylenedisulfonic acid esters, such as methylene methanedisulfonate (28), ethylene methanedisulfonate (29), and... 

The capacity fading of LiCoOa/graphite lithinm-ion batteries that are cycled in the voltage range of 3.0-4.5 V can be reduced by methylene methanedisulfonate as an electrolyte additive (74). This compoimd is shown in Figure 2.18. 

LSV and CV measurements indicated that methylene methanedisulfonate has a lower oxidation potential in the mixed solvents of ethylene carbonate and ethyl methyl carbonate. Further, it participates in the formation process of the CEl film. 

The addition of 0.5% methylene methanedisulfonate into the electrolyte effects a significant increase of the capacity retention of the cells from 32.0% to 69.6% after 150 cycles Also, the rate capacity is improved in comparison to the cells without the methylene methanedisulfonate additive in the electrolyte. 

The results of EIS, XPS and TEM indicated that the enhanced electrochemical performances of the cells can be ascribed to the modification of components of the cathode s surface layer in the presence of methylene methanedisulfonate. This results in the suppression of the electrolyte oxidized decomposition and the improvement of CEI conductivity (74). 

Methane dichloride Methane-, dichloro-. See Methylene chloride Methane, dicyano-. See Malononitrile Methane, diethoxy-. See Diethoxymethane Methane, diphenyl-. See Diphenylmethane Methanedisulfonic acid, aluminum salt (3 2). See Aluminum methionate p-Methane-2,9-dithiol. See D-Limonene dimercaptan Methane gas CAS 74-82-8... 

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