“Alternative
strategy for a safe rechargeable battery
The advent of a Li+ or Na+
glass electrolyte with a cation conductivity σi
> 10−2 S cm−1 at 25 °C and a motional enthalpy ΔHm
= 0.06 eV that is wet by a metallic lithium or sodium anode is used to develop
a new strategy for an all-solid-state, rechargeable, metal-plating battery.
During discharge, a cell plates the metal of an anode of high-energy Fermi
level such as lithium or sodium onto a cathode current collector with a
low-energy Fermi level; the voltage of the cell may be determined by a cathode
redox center having an energy between the Fermi levels of the anode and that of
the cathode current collector. This strategy is demonstrated with a solid
electrolyte that not only is wet by the metallic anode, but also has a
dielectric constant capable of creating a large electric-double-layer
capacitance at the two electrode/electrolyte interfaces. The result is a safe,
low-cost, lithium or sodium rechargeable battery of high energy density and
long cycle life.”
This journal club took place on 30/03/17. The paper was suggested by Callum. Jenny brought doughnuts. Number of attendees: 12.
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