Huge Seebeck coefficients in non-aqueous electrolytes

Details Huge Seebeck coefficients in non-aqueous electrolytes Huge Seebeck coefficients in non-aqueous electrolytes

2011-02-11

arxiv.org/abs/1102.2425v1

Physics

Condensed Matter

Soft Condensed Matter

Submitted to J. Chem. Phys

Scientific paper

The Seeebeck coefficients of the non-aqueous electrolytes tetrabutylammonium nitrate, tetraoctylphosphonium bromide and tetradodecylammonium nitrate in 1-octanol, 1-dodecanol and ethylene-glycol are measured in a temperature range from T=30 to T=45 C. The Seebeck coefficient is generally of the order of a few hundreds of microvolts per Kelvin for aqueous solution of inorganic ions. Here we report huge values of 7 mV/K at 0.1M concentration for tetrabutylammonium nitrate in 1-dodecanol. These striking results open the question of unexpectedly large kosmotrope or "structure making" effects of tetraalkylammonium ions on the structure of alcohols.

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