A New Rechargeable Battery Design Based on Magnesium and Persulfate

Robert S. Disselkamp

Solis Research, Richland, Washington, USA.

DOI: 10.4236/jpee.2015.33002                

Abstract

A battery concept based on the chemical system of magnesium (anode) and persulfate (cathode) is presented. A complete procedure is given to prepare the battery for testing, although no experimental data is presented herein. The similarities of this system to a well-tested Li||LiFePO₄ system lend strong credibility to the concept, and the estimated performance characteristics presented. The advantages of this design include the following many areas. First, inexpensive, and available, battery reagents exist. Second, by analogy to the lithium ion battery for which comparisons are made, the full fabrication process for battery separator design is known and efficient; and both the kJ/kg and Amps/kg values are estimated to be substantially larger than the lithium ion battery (e.g., Li||LiFePO₄) experimental design. Finally, flammability of the Mg||MgS₂O₈ system can be expected to provide less of a potential flammability concern, compared to comparable lithium ion batteries. This is because lithium metal, as with any alkali metal, is aggressively flammable even under reduced moisture environments. The proposed magnesium persulfate battery calculated metrics yield an improvement of 194% greater output power (W/cm²·kg), and 154% greater stored energy (MJ/kg) than state-of-the-art lithium iron phosphate batteries.

Keywords

Magnesium Persulfate, Rechargeable Battery, Low Flammability, Energy Storage

Conflicts of Interest

The authors declare no conflicts of interest.

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