ISRO Missions and Discoveries

BHEL to make Li ion cells with ISRO technology


Mains Paper 3: Science & Technology | indigenization of technology & developing new technology

From UPSC perspective, the following things are important:

Prelims level: ISRO, BHEL, space grade lithium ion cells

Mains level: Developments in Indian space sector

Technology transfer agreement between BHEL and ISRO

  1. Indian Space Research Organisation (ISRO) has signed a technology transfer agreement with Bharat Heavy Electricals Ltd for the manufacture of space grade lithium ion cells
  2. These will be used for the space programme and other national requirements

Li-ion batteries use

  1. The Li-ion batteries power various applications on satellites and launch vehicles
  2. Currently, BHEL assembles and tests Li-ion batteries using imported cells
  3. Vikram Sarabhai Space Centre at Thiruvananthapuram has developed the technology to produce space grade Li-ion cells


Li-ion batteries

  1. A lithium-ion battery or Li-ion battery (abbreviated as LIB) is a type of rechargeable battery in which lithium ions move from the negative electrode to the positive electrode during discharge and back when charging
  2. Li-ion batteries use an intercalated lithium compound as one electrode material, compared to the metallic lithium used in a non-rechargeable lithium battery
  3. The electrolyte, which allows for ionic movement, and the two electrodes are the constituent components of a lithium-ion battery cell
  4. Generally, the negative electrode of a conventional lithium-ion cell is made from carbon
  5. The positive electrode is a metal oxide, and the electrolyte is a lithium salt in an organic solvent
  6. The electrochemical roles of the electrodes reverse between anode and cathode, depending on the direction of current flow through the cell
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