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We confirmed the existence of LiO2 by electrochemical quartz crystal microbalance (EQCM) in TEGDME based Li-O2 batteries. Our results indicated that Li2O2 is generated through stepwise electrochemical reactions rather than disproportionation. We report for the first time that the formed Li2O2 oxidizes to LiO2 at relative negative potential and O2 at positive potential respectively. Our conclusions...
Nitrogen doped holey graphene (NHG), with in-plane holes in its sheet plate, has been synthesized in this work through the potassium hydroxide (KOH) etching and ball milling of nitrogen doped graphene (NG). It shows that the KOH etching and ball milling does not distinctly alter the elemental composition and the relative percentages of functional groups in NG, but produce holes in its in-plane sheet...
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