Carbon nanotubes(CNTs)have attracted great interest in numerous applications due to their excellent electronic and structural properties.However,harsh synthesis conditions and high energy consumption limit the further...Carbon nanotubes(CNTs)have attracted great interest in numerous applications due to their excellent electronic and structural properties.However,harsh synthesis conditions and high energy consumption limit the further application of CNTs.Herein,we developed a facile and innovative strategy to generate CNTs by physically pressurizing metal-organic frameworks(MOFs)and then pyrolyzing.The synthesized bimetallic nitrogen/sulfur double-doped carbon nanotubes are denoted as Fe_(x)Co_(1-x)P(x=0.5,0.6,0.7,0.8,0.9).The introduction of pressure not only revolutionized the morphology of the electrocatalysts,but also enhanced the activity of oxygen evolution reaction(OER)and hydrogen evolution reaction(HER)in alkaline solution.Fe_(0.6)Co_(0.4)-P exhibits superior OER and HER performances in 1.0 mol·L^(-1)KOH solution with overpotentials of 364 and 346 mV at 10 mA·cm^(-2),which are 28 and 5 mV lower than unpressurized Fe0.6Co0.4.展开更多
Electrocatalysts with high activities are crucial for highenergy-density Zn-air batteries.However,the sluggish kinetics of oxygen evolution reaction(OER)and oxygen reduction reaction(ORR)on the electrocatalysts hinder...Electrocatalysts with high activities are crucial for highenergy-density Zn-air batteries.However,the sluggish kinetics of oxygen evolution reaction(OER)and oxygen reduction reaction(ORR)on the electrocatalysts hindered the development of Zn-air batteries.Herein,a new class of MOF-derived nitrogen-doped carbon nanotubes encapsulated with bimetallic oxide(FeNiO@NCNT)through facile pyrolysis strategy is reported.The FeNiO@NCNT exhibits high catalytic activities for both OER and ORR.展开更多
基金financially supported by the National Natural Science Foundation of China(No.52171277)Zhejiang Provincial Natural Science Foundation of China(No.LY20E020001)。
文摘Carbon nanotubes(CNTs)have attracted great interest in numerous applications due to their excellent electronic and structural properties.However,harsh synthesis conditions and high energy consumption limit the further application of CNTs.Herein,we developed a facile and innovative strategy to generate CNTs by physically pressurizing metal-organic frameworks(MOFs)and then pyrolyzing.The synthesized bimetallic nitrogen/sulfur double-doped carbon nanotubes are denoted as Fe_(x)Co_(1-x)P(x=0.5,0.6,0.7,0.8,0.9).The introduction of pressure not only revolutionized the morphology of the electrocatalysts,but also enhanced the activity of oxygen evolution reaction(OER)and hydrogen evolution reaction(HER)in alkaline solution.Fe_(0.6)Co_(0.4)-P exhibits superior OER and HER performances in 1.0 mol·L^(-1)KOH solution with overpotentials of 364 and 346 mV at 10 mA·cm^(-2),which are 28 and 5 mV lower than unpressurized Fe0.6Co0.4.
基金financially supported by Zhejiang Provincial Natural Science Foundation of China(No.LY20E020001)the Fundamental Research Funds of Zhejiang Sci-Tech University(No.22212290-Y)。
文摘Electrocatalysts with high activities are crucial for highenergy-density Zn-air batteries.However,the sluggish kinetics of oxygen evolution reaction(OER)and oxygen reduction reaction(ORR)on the electrocatalysts hindered the development of Zn-air batteries.Herein,a new class of MOF-derived nitrogen-doped carbon nanotubes encapsulated with bimetallic oxide(FeNiO@NCNT)through facile pyrolysis strategy is reported.The FeNiO@NCNT exhibits high catalytic activities for both OER and ORR.
