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Current Affairs

Technology to tap energy from water

Date: 31 December 2019 Tags: Energy

Issue

A team of researchers at the Indian Institute of Technology-Guwahati  has developed materials that can produce energy from flowing or stagnant water in households. 

 

Background

The decentralised energy model involves a large number of small generation devices that can generate energy in every household and the excess energy thus produced can be evacuated to energy-deficient areas nearby.

 

Details

  • The team employed “electro-kinetic streaming potential” to harvest energy from flowing tap water and “contrasting inter-facial activities” employing different types of semiconducting materials to generate power from stagnant water.

  • When fluids stream through tiny channels that are charged, they can generate an electrical voltage, which may be harnessed through miniaturised generators.

  • The team also fabricated devices with doped graphene flakes for generating power by dipping in a bucket of water or any stagnant water source to “complementary charge transfer activities”.

  • Water stored in buckets and water flowing from taps can potentially be used to produce energy if such nano-generators can be developed further.