The sluggish kinetics of the four electron transfer process for the oxygen evolution reaction(OER)greatly hampered the improvement of the efficiency for whole water splitting to produce clean energy(hydrogen).Currentl...The sluggish kinetics of the four electron transfer process for the oxygen evolution reaction(OER)greatly hampered the improvement of the efficiency for whole water splitting to produce clean energy(hydrogen).Currently,high efficient electrocatalysts are mainly foused on noble-metal-based materials,which,however,are not suitable for further practical applications due to their high cost and terrestrial scarcity.展开更多
Correction for‘Influence of Zn and Co co-doping on oxygen evolution reaction electrocatalysis at MOF-derived N-doped carbon electrodes’by Xiaobing Yang et al.,Inorg.Chem.Front.,2019,DOI:10.1039/c9qi00334g.The author...Correction for‘Influence of Zn and Co co-doping on oxygen evolution reaction electrocatalysis at MOF-derived N-doped carbon electrodes’by Xiaobing Yang et al.,Inorg.Chem.Front.,2019,DOI:10.1039/c9qi00334g.The authors regret that an error is present within Fig.4.In Fig.4(b),we inadvertently re-used a figure that was published in our previous paper.1 The correct version of Fig.4 is shown below.展开更多
Highly efficient and durable water oxidation electrocatalysts are critically important in a wide range of clean energy technologies,including water electrolyzers and rechargeable metal-air batteries.Here,we report a n...Highly efficient and durable water oxidation electrocatalysts are critically important in a wide range of clean energy technologies,including water electrolyzers and rechargeable metal-air batteries.Here,we report a novel sonochemical approach to synthesize amorphous nickel-iron oxides/carbon nanohybrids with tunable compositions for the oxygen evolution reaction （OER）.The sonochemically synthesized amorphous electrocatalysts with optimal composition exhibit a low overpotential of 290 mV at 10 mA＆#183;cm-2 and a Tafel slope of 31 mV＆#183;decade-1 in a 0.1 M KOH electrolyte,outperforming the benchmark RuO2 catalyst.Meanwhile,these nanohybrids are also highly stable and remain amorphous even after prolonged cycling.In addition to amorphism,sonochemistry endows as-prepared nickel-iron oxides/carbon nanohybrids with a simultaneously formed carbon scaffold and internal Ni（0）,which can enhance the stability and activity for the OER.This work demonstrates that sonochemistry is a unique method for synthesizing amorphous metal oxides toward an efficient and durable OER.展开更多
基金financially supported by the National Natural Science Foundation of China(21701159)the Zhejiang Sci-Tech University(18062242-Y)the Scientific Research Project for the Education Department of Zhejiang Province(No.Y201839992).
文摘The sluggish kinetics of the four electron transfer process for the oxygen evolution reaction(OER)greatly hampered the improvement of the efficiency for whole water splitting to produce clean energy(hydrogen).Currently,high efficient electrocatalysts are mainly foused on noble-metal-based materials,which,however,are not suitable for further practical applications due to their high cost and terrestrial scarcity.
文摘Correction for‘Influence of Zn and Co co-doping on oxygen evolution reaction electrocatalysis at MOF-derived N-doped carbon electrodes’by Xiaobing Yang et al.,Inorg.Chem.Front.,2019,DOI:10.1039/c9qi00334g.The authors regret that an error is present within Fig.4.In Fig.4(b),we inadvertently re-used a figure that was published in our previous paper.1 The correct version of Fig.4 is shown below.
基金We thank the Photoemission Endstation （BL10B） in National Synchrotron Radiation Laboratory （NSRL） for collecting X-ray data. This work was supported by the National Key Basic Research Program of China （Nos. 2015CB351903 and 2014CB848900）, the National Natural Science Foundation of China （Nos. 21474095, 11574280, 11605201, and U1532112）, CAS Key Research Program of Frontier Sciences （No. QYZDB-SSW-SLH018）, and the Fundamental Research Funds for the Central Universities.
文摘Highly efficient and durable water oxidation electrocatalysts are critically important in a wide range of clean energy technologies,including water electrolyzers and rechargeable metal-air batteries.Here,we report a novel sonochemical approach to synthesize amorphous nickel-iron oxides/carbon nanohybrids with tunable compositions for the oxygen evolution reaction （OER）.The sonochemically synthesized amorphous electrocatalysts with optimal composition exhibit a low overpotential of 290 mV at 10 mA＆#183;cm-2 and a Tafel slope of 31 mV＆#183;decade-1 in a 0.1 M KOH electrolyte,outperforming the benchmark RuO2 catalyst.Meanwhile,these nanohybrids are also highly stable and remain amorphous even after prolonged cycling.In addition to amorphism,sonochemistry endows as-prepared nickel-iron oxides/carbon nanohybrids with a simultaneously formed carbon scaffold and internal Ni（0）,which can enhance the stability and activity for the OER.This work demonstrates that sonochemistry is a unique method for synthesizing amorphous metal oxides toward an efficient and durable OER.
