Organic tailored batteries materials using stable open-shell molecules with degenerate frontier orbitals

Area of Science:

• Materials Science
• Electrochemistry
• Organic Chemistry

Background:

• Organic electrode-active materials offer safer, cheaper alternatives to lithium-ion batteries.
• Existing organic polymers show promising voltage and cycle performance.
• Developing high-capacity organic materials is crucial for next-generation batteries.

Discussion:

• This study explores organic molecules with degenerate molecular orbitals (MOs) for high-capacity batteries.
• Trioxotriangulene (TOT), an open-shell organic molecule, was investigated for its electrochemical properties.
• Specific derivatives, (t-Bu)(3)TOT and Br(3)TOT, were synthesized and tested.

Key Insights:

• A tri-tert-butylated TOT derivative achieved a discharge capacity over 300 A h kg(-1), surpassing lithium-ion batteries.
• A tribrominated TOT derivative enhanced output voltage and cycle stability.
• The use of degenerate MOs in organic molecules is a viable strategy for high-performance batteries.

Outlook:

• Further research into tailored organic molecules can unlock superior battery performance.
• These findings pave the way for advanced organic batteries with improved energy density and longevity.
• Exploring novel molecular designs based on degenerate MOs holds significant potential for future energy storage solutions.