Stack Pressure Considerations for Room‐Temperature All‐Solid‐State Lithium Metal Batteries

Abstract All‐solid‐state batteries are expected to enable batteries with high energy density with the use of lithium metal anodes. Although solid electrolytes are believed to be mechanically strong enough to prevent lithium dendrites from propagating, various reports today still show cell failure due to lithium dendrit growth at room temperature. While cell parameters such as current density, electrolyte porosity, and interfacial properties have been investigated, mechanical properties of lithium metal and the role of applied stack pressure on the shorting behavior are still poorly understood. Here, failure mechanisms of lithium metal are investigated in all‐solid‐state batteries as a function of stack…

• NS
  National Science Foundation

  Award: ECCS‐1542148
• NI
  National Institute of General Medical Sciences

  Award: P41GM103412