Chinese researchers introduced Graphene to develop all-weather solar cell

Apr 12, 2016 16:00 IST

Chinese researchers in April 2016 introduced a new approach for making an all-weather solar cell that can generate electricity even during rains. The cell will use 'wonder material' graphene.

This highly efficient dye-sensitised solar cell coated with a very thin film of graphene was developed by a team from the Ocean University of China and Yunan Normal University.
This discovery was published in the journal Angewandte Chemie.

Graphene is a two-dimensional form of carbon in which the atoms are bonded into a honeycomb arrangement. It can readily be prepared by the oxidation, exfoliation, and subsequent reduction of graphite.

In aqueous solution, graphene can bind positively charged ions with its electrons (Lewis acid-base interaction). It conducts electricity and is rich in electrons that can move freely across the entire layer (delocalized).

This property is used in graphene-based processes to remove lead ions and organic dyes from solutions and these characteristic inspired researchers to use graphene electrodes to obtain power from the impact of raindrops.

How the device will function?

At the point of contact between the raindrop and the graphene, the water becomes enriched in positive ions and the graphene becomes enriched in delocalised electrons. This result in a double-layer made of electrons and positively charged ions, a feature known as a pseudocapacitor.

The difference in potential associated with this phenomenon is sufficient to produce a voltage and current.

Now get latest Current Affairs on mobile, Download # 1  Current Affairs App

Is this article important for exams ? Yes9 People Agreed

Register to get FREE updates

    All Fields Mandatory
  • (Ex:9123456789)
  • Please Select Your Interest
  • Please specify

  • ajax-loader
  • A verifcation code has been sent to
    your mobile number

    Please enter the verification code below

This website uses cookie or similar technologies, to enhance your browsing experience and provide personalised recommendations. By continuing to use our website, you agree to our Privacy Policy and Cookie Policy. OK