Goodenough and UT team report new strategy for all-solid-state Na or Li battery suitable for EVs; plating cathodes

2 Mar 2017   Electric Cars

A team of engineers led by John Goodenough, professor in the Cockrell School of Engineering at The University of Texas at Austin and co-inventor of the lithium-ion battery, has developed a new strategy for a safe, low-cost, all-solid-state rechargeable sodium or lithium battery cell that has the required energy density and cycle life for a battery that powers an all-electric road vehicle. An open-access paper on the work is published in the RSC journal Energy & Environmental Science . The cells use a solid glass electrolyte having a Li + or Na + conductivity >10 -2 S cm -1 at 25 ˚C with a motional enthalpy ≈ 0.06 eV, which promises to offer acceptable operation at lower temperatures. Using the new glass, the cathode consists of plating the anode alkali-metal (e.g., (lithium, sodium or potassium) on a copper–carbon cathode current collector at a voltage of more than 3.0 V. […]

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