Unusual electrochemical N reduction activity in an earth-abundant iron catalyst via phosphorous modulation.

Fe-enabled high-performance ambient electrochemical N2 reduction still remains a big challenge. Here, we report the unusual role of phosphorous in modulating the electrochemical N2 reduction activity of an Fe catalyst. An FeP2 nanoparticle-reduced graphene oxide hybrid (FeP2-rGO) attains a large NH3 yield of 35.

Pseudocapacitive behavior of the FeO anode and its contribution to high reversible capacity in lithium ion batteries.

Pseudocapacitance, which is the storage of charge based on continuous and fast reversible redox reactions at the surface of electrode materials, is commonly observed for electrodes in lithium ion batteries, especially for transition metal oxide anodes. In this report, bare Fe2O3 of granular morphology (∼30 nm in diameter) with high purity and decent crystallinity as well as recommendable electrochemical performances is fabricated hydrothermally and employed as the subject to clarify pseudocapacitive behavior in transition metal oxide anodes. Electrochemical technologies such as galvanostatic charging/discharging, differential capacity analysis (dQ/dV) and the power law relationship (i = aνb), which can distinguish pseudocapacitive behaviors of an electrode reaction were employed to analyze the electrodes.