High energy density and high power density all-solid-state Li sulfur batteries

Boost your battery life and efficiency with MoS2-enhanced lithium-sulfur technology.

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Background

 The development of all-solid-state lithium-sulfur batteries (ASSLSBs) is hindered by several materials-based challenges that compromise their efficiency and commercial potential. The interface instability between electrodes and the solid-state electrolyte, combined with poor conductivity and slow reaction kinetics, severely limits their performance. These batteries are further plagued by the degradation of solid-state electrolytes under high voltages and the inadequate ion transport facilitated by conventional carbon additives. These factors contribute to diminished battery efficiency, reduced capacity, and decreased long-term stability, posing significant obstacles to the advancement of ASSLSB technology.

Technology Overview

Northeastern researchers have developed a new type of carbon fiber combined with MoS2 nanosheets to improve all-solid-state lithium-sulfur batteries (ASSLSBs). This combination uses MoS2, known for its stability, which helps prevent the battery materials from breaking down under high voltage. This stability is key to maintaining the battery’s structure and function over time. The MoS2 also improves the movement of electrons and can hold a large amount of lithium ions, which helps increase the battery’s power flow. These changes have led to better battery performance, including longer battery life, higher power output, and more consistent energy delivery. This new battery design prevents common problems such as the shuttle effect, which can degrade battery performance and outperforms older designs that do not use MoS2.

Benefits

  • Elevated initial discharge capacity for improved energy storage
  • Increased coulombic efficiency nearing 100%
  • Enhanced cycling stability for extended battery longevity
  • Superior rate performance enabling rapid charging and discharging
  • Stabilized interface with minimized risk of side reactions and shuttle effects

Applications

  • Power sources for electric vehicles (EVs), benefiting from enhanced energy densities and stability
  • Energy storage systems for renewable sources such as solar and wind, leveraging the battery’s high capacity and efficiency
  • Portable electronic devices that demand extended battery life and rapid charging capabilities
  • Backup power supplies where prolonged reliability and superior efficiency are essential
  • Space and aviation industries prioritizing optimal weight-to-power ratios and battery stability across diverse temperatures

Opportunity

  • Research collaboration
  • Licensing
IP Status
  • Utility application pending
Seeking
  • Development partner
  • Commercial partner
  • Licensing

Patent Information:
Title App Type Country Serial No. Patent No. File Date Issued Date Expire Date
HIGH ENERGY DENSITY AND HIGH POWER DENSITY ALL-SOLID-STATE LI SULFUR BATTERIES Utility *United States of America 18/585,713   2/23/2024