TITLE:
A New Rechargeable Battery Design Based on Magnesium and Persulfate
AUTHORS:
Robert S. Disselkamp
KEYWORDS:
Magnesium Persulfate, Rechargeable Battery, Low Flammability, Energy Storage
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.3 No.3,
March
24,
2015
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.