New carbon-based catalyst synthesis from spent li-ion batteries for electrochemical oxygen reductionKazemi, Maryam; Liivand, Kerli; Kruusenberg, Ivar; Walke, Peter; Mikli, Valdek; Uibu, Mai; Macdonald, Digby D.GSFMT Scientific Conference 2021 : Tartu, June 14-15, 2021 : abstracts2021 / P 42 https://fmtdk.ut.ee/wp-content/uploads/2021/06/GSFMT_abstractbook_2021.pdf