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In article 1701025, Ligui Li, Shaowei Chen, and co‐workers, develop a series of nitrogen and sulfur‐codoped graphene composites with a high content of cobalt sulfide nanoparticles, which can serve as low‐cost and efficient trifunctional electrocatalyst towards oxygen reversible catalysis and hydrogen production in a full‐water electrolyzer in the same alkaline electrolyte.
Nitrogen and sulfur‐codoped graphene composites with Co9S8 (NS/rGO‐Co) are synthesized by facile thermal annealing of graphene oxides with cobalt nitrate and thiourea in an ammonium atmosphere. Significantly, in 0.1 m KOH aqueous solution the best sample exhibits an oxygen evolution reaction (OER) activity that is superior to that of benchmark RuO2 catalysts, an oxygen reduction reaction (ORR) activity...
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