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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Published on: December 20, 2016

Ionic liquids as hypergolic fuels.

Yanqiang Zhang1, Haixiang Gao, Young-Hyuk Joo

  • 1Department of Chemistry, University of Idaho, Moscow, ID 83844-2343, USA.

Angewandte Chemie (International Ed. in English)
|September 17, 2011
PubMed
Summary
This summary is machine-generated.

Researchers developed new dicyanoborate ionic liquids as safer, high-performance alternatives to toxic hydrazine fuels. These novel compounds offer hypergolic properties and stability for advanced propellant systems.

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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
06:44

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

Area of Science:

  • Propulsion and propellant chemistry
  • Materials science
  • Green chemistry

Background:

  • Hydrazine and its derivatives are standard propellants but are toxic, carcinogenic, and require extensive safety measures.
  • Ionic liquids (ILs) with dicyanamide anions demonstrated hypergolic properties in 2008, offering lower volatility and higher stability.
  • Existing ILs show promise as safer alternatives in bipropellant systems.

Purpose of the Study:

  • To introduce a new family of ionic liquids based on dicyanoborate anions.
  • To evaluate these novel compounds as potential replacements for hazardous hydrazine-based propellants.
  • To assess their suitability for use in advanced bipropellant systems.

Main Methods:

  • Synthesis of dicyanoborate ionic liquids with various substituted N-acyclic, N-cyclic, and azolium cations.
  • Evaluation of synthesized compounds for key fuel properties, including hypergolicity, stability, and volatility.
  • Comparison of performance against traditional hydrazine fuels and existing ionic liquid candidates.

Main Results:

  • A new family of dicyanoborate ionic liquids was successfully synthesized, with some compounds exhibiting hypergolic behavior.
  • These novel ionic liquids can be synthesized in aqueous media, simplifying production.
  • The developed compounds meet several critical criteria for effective propellant fuels, including low volatility and high stability.

Conclusions:

  • Dicyanoborate ionic liquids represent a promising new class of safer, high-performance rocket propellants.
  • These compounds offer a viable alternative to hazardous traditional fuels like hydrazine.
  • Further research into dicyanoborate ionic liquids could lead to advancements in spacecraft propulsion technology.