Skip Navigation
SBIR/STTR

Rechargeable Lithium Sulfur (Li-S) Battery with Specific Energy 400 Wh/kg and Operating Temperature Range -60°C to 60°C, Phase I

Completed Technology Project

Project Introduction

Rechargeable Lithium Sulfur (Li-S) Battery with Specific Energy 400 Wh/kg and Operating Temperature Range -60°C to 60°C, Phase I
Sion Power is developing a rechargeable lithium sulfur (Li-S) battery with a demonstrated specific energy exceeding 350 Wh/kg and the range of operating temperatures from ?40 to +45oC. The range will be extended to ?60 +60oC and specific energy to 400 Wh/kg. Performance improvement will be based on developing three components: 1. Advanced electrolytes with high ionic conductivity at liquid or glassy state at temperatures down to minus 70-100oC; 2. Advanced cathode with homogeneous and heterogeneous catalysts increasing electrochemical sulfur utilization to 90% and energy to 400 Wh/kg; 3. Additives protecting lithium anode surface from reaction with electrolyte and providing long calendar life and low self-discharge; To demonstrate the effectiveness of components developed, we will build and cycle the series of 1.2 ? 2.5 Ah cells in the range of temperatures from ?70 to +60oC at rates from C/20 to 2C. More »

Anticipated Benefits

Primary U.S. Work Locations and Key Partners

Project Library

Share this Project

Organizational Responsibility

Project Management

Project Duration

Light bulb

Suggest an Edit

Recommend changes and additions to this project record.

This is a historic project that was completed before the creation of TechPort on October 1, 2012. Available data has been included. This record may contain less data than currently active projects.

^