The development of efficient and durable oxygen evolution reaction(OER)catalysts for energy-saving electrolytic hydrogen generation is highly attractive.In this communication,we report the development of an FeMoO_(4)n...The development of efficient and durable oxygen evolution reaction(OER)catalysts for energy-saving electrolytic hydrogen generation is highly attractive.In this communication,we report the development of an FeMoO_(4)nanorod array on nickel foam(FeMoO_(4)/NF)via a facile hydrothermal process.As a 3D oxygen evolution reaction electrocatalyst,such FeMoO_(4)/NF shows superior catalytic activity with a geometrical catalytic current density of 50 mA cm^(−2)at an overpotential of only 293 mV in 1.0 M KOH.Notably,this electrode also shows good long-term electrochemical durability with a high turnover frequency value of 0.43 mol O2 s−1 at an overpotential of 390 mV.This study provides us an attractive costeffective 3D catalyst material in water-splitting devices for efficient and durable water oxidation at alkaline pH.展开更多
The development of efficient electrocatalysts from Earth-abundant elements for the oxygen evolution reaction (OER) is highly desired.Here,we report the electrodeposition of a NiCo layered double hydroxide nanosheet ar...The development of efficient electrocatalysts from Earth-abundant elements for the oxygen evolution reaction (OER) is highly desired.Here,we report the electrodeposition of a NiCo layered double hydroxide nanosheet array on graphite felt (NiCo LDHs/GF) as a 3D OER electrocatalyst.Such NiCo LDHs/GF exhibits superior electrocatalytic activity with the need for an overpotential of 249 mV to drive a current density of 20 mA cm^(-2) in 1.0 M KOH.It also shows strong long-term electrochemical durability with its activity being maintained for at least 24 h.展开更多
基金supported by the Natural Science Foundation Project of Chongqing Science and Technology Commission(no.cstc2015jcyjA10033).
文摘The development of efficient and durable oxygen evolution reaction(OER)catalysts for energy-saving electrolytic hydrogen generation is highly attractive.In this communication,we report the development of an FeMoO_(4)nanorod array on nickel foam(FeMoO_(4)/NF)via a facile hydrothermal process.As a 3D oxygen evolution reaction electrocatalyst,such FeMoO_(4)/NF shows superior catalytic activity with a geometrical catalytic current density of 50 mA cm^(−2)at an overpotential of only 293 mV in 1.0 M KOH.Notably,this electrode also shows good long-term electrochemical durability with a high turnover frequency value of 0.43 mol O2 s−1 at an overpotential of 390 mV.This study provides us an attractive costeffective 3D catalyst material in water-splitting devices for efficient and durable water oxidation at alkaline pH.
基金supported by the National Natural Science Foundation of China(no.22072015).
文摘The development of efficient electrocatalysts from Earth-abundant elements for the oxygen evolution reaction (OER) is highly desired.Here,we report the electrodeposition of a NiCo layered double hydroxide nanosheet array on graphite felt (NiCo LDHs/GF) as a 3D OER electrocatalyst.Such NiCo LDHs/GF exhibits superior electrocatalytic activity with the need for an overpotential of 249 mV to drive a current density of 20 mA cm^(-2) in 1.0 M KOH.It also shows strong long-term electrochemical durability with its activity being maintained for at least 24 h.
