Revealing the synergetic electrocatalyst behaviour of Kish graphite recovered from polyethylene plastics

•For the first time, waste polyethylene was recycled into Kish graphite using an indigenous set-up.•The tafel studies show the anticorrosive nature with the corrosion potential of −1.6 V.•Mg-O2 battery with Kish graphite air cathode, shows long cell life and discharge capacity of 1226.51 mAh g−1.•Ba...

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