CATHODE MATERIALS FOR SODIUM ION BATTERIES (Syllabus: GS Paper 3 - Sci & Tech)

News-CRUX-10     31st August 2023        
Samadhaan

Context: Scientists have developed sodium nickel manganese cobalt oxide and sodium nickel manganese iron oxide (Na-NMC and NFM) cathode materials along with novel sodium superionic conducting solid-state electrolytes designed specifically for sodium ion batteries. 

  • The developed cylindrical cells and the resultant battery pack, has been developed under Ministry of Higher Education (MHE) and Science and Engineering Research Board (SERB), a statutory body under the Department of Science and Technology, supported IMPRINT II project.

 

Key Points

  • The newly developed cathode materials can provide high capacity and prolonged battery life, enabling longer-lasting and more powerful sodium ion batteries. 
  • The novel sodium superionic conducting solid-state electrolytes play a crucial role in efficiently transporting sodium ions within the battery.
  • This breakthrough could enhance the battery's safety, stability, and energy density. 
  • A compatible battery management system (BMS) and suitable charger were developed by the industry collaborator.
  • Sodium ion batteries, which utilise sodium ions as charge carriers instead of lithium ions, offer numerous advantages over traditional lithium-ion batteries. Important among these advantages are lower costs, abundance and chemistry of sodium ion batteries similar to lithium.
  • Additionally, sodium's wider availability and reduced environmental impact make sodium ion batteries a more sustainable choice. 
  • However, safety, stability and energy density of these batteries are challenges which need to be addressed.
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