Available Technology

Solid Electrolyte with I-4 Crystal Structure

Current electrolytes in lithium-ion batteries are flammable organic solvents and can be unstable. In addition to their inherent stability, solid-state electrolytes are nonflammable and may allow the use of metal anodes, increasing battery energy density considerably.
Abstract: 
LiZnPS4 was investigated and found to be a good ionic conductor especially if the lithium content is increased beyond 1 Li per 4 S atoms. The conductivity is comparable to current solid state electrodes (5.7 x 10-4 S/cm); however, LiZnPS4 does not require expensive elements such as germanium, which is a key component of previous electrolytes. LiZnPS4 and other I4 structured materials improve Li-ion batteries by replacing flammable electrolytes, improving electrochemical stability, and decreasing production cost.
Benefits: 
Removes flammability associated with organic electrolyte - Improves electrochemical stability - Easily synthesizable
applications: 
Inventors: 
Gerbrand Ceder
Lab Representatives
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