A team of researchers at the Sustainable Energy Laboratory (LAES) of the National University of Córdoba (UNC) has discovered a remarkable use for cow hair - they have successfully created biochar for a small battery. The process involved "cooking" the clean hair twice at 500 and 900 degrees, and adding sulfur. In their tests, the team observed promising electrochemical performance, with no negative effects after 100 charge-discharge cycles.

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