Budou nove Li baterky s tuhym elektrolytem

Jaroslav Lukesh lukesh na seznam.cz
Pátek Březen 3 01:15:50 CET 2017


http://pubs.rsc.org/en/Content/ArticleLanding/2017/EE/C6EE02888H

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.

http://engr.utexas.edu/news/8203-goodenough-batteries



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