Materials with high surface area,tailored pore size and good electrical conductivity are needed for improved supercapacitors(SCs).Metal-organic frameworks(MOFs)have high surface areas and tailored pore sizes.Here,the ...Materials with high surface area,tailored pore size and good electrical conductivity are needed for improved supercapacitors(SCs).Metal-organic frameworks(MOFs)have high surface areas and tailored pore sizes.Here,the MOF(1)of[Ni3(μ3 OH)(pba)3(bpdc)1.5]·11.5 DMA·0.5 CH3 OH·7 H2O is good enough to result in electrode materials with nearly ideal supercapacitive behavior at the rate up to 50 mV·s^-1 in a KOH electrolyte.The super capacitive performance of MOF(1)was measured using cyclic voltammogram,galvanostatic discharge and electrochemical impedance spectroscopy measurements.This MOF(1)as electrode exhibits the highest super capacitive properties with 417 F·g^-1,the maximum storage energy and power density are 9.27 and 2.38 kW·kg^-1.The long term stability of MOF(1)as SCs is checked that the capacitance is decreased by 17%after 1000 cycles.展开更多
Decoration of metal-organic framework(MOF)has been considered as an effective route to improve the photoelectrochemical(PEC)performance of TiO_(2),but there is still a lack of understanding of the regulatory structure...Decoration of metal-organic framework(MOF)has been considered as an effective route to improve the photoelectrochemical(PEC)performance of TiO_(2),but there is still a lack of understanding of the regulatory structure.Herein,Ni-MOF was rationally introduced by in-situ etching method,which helps for artificially regulating the coordination state of Ni sites.The photocurrent density(0.81 mA/cm^(2))and IPCE value(33.1%)of TiO_(2)-MOF-2 are about twice higher than that of pristine TiO_(2) due to the rich unsaturated sites of Ni-MOF.Meanwhile,the saturated coordination has caused the decline of PEC performance because of the obvious steric hindrance.Therefore,this work presents an insight for the effect of coordination state on PEC activity especially in MOF system.展开更多
基金supported by the National Natural Science Foundation of China(21663031,21503183)
文摘Materials with high surface area,tailored pore size and good electrical conductivity are needed for improved supercapacitors(SCs).Metal-organic frameworks(MOFs)have high surface areas and tailored pore sizes.Here,the MOF(1)of[Ni3(μ3 OH)(pba)3(bpdc)1.5]·11.5 DMA·0.5 CH3 OH·7 H2O is good enough to result in electrode materials with nearly ideal supercapacitive behavior at the rate up to 50 mV·s^-1 in a KOH electrolyte.The super capacitive performance of MOF(1)was measured using cyclic voltammogram,galvanostatic discharge and electrochemical impedance spectroscopy measurements.This MOF(1)as electrode exhibits the highest super capacitive properties with 417 F·g^-1,the maximum storage energy and power density are 9.27 and 2.38 kW·kg^-1.The long term stability of MOF(1)as SCs is checked that the capacitance is decreased by 17%after 1000 cycles.
基金Provincial Undergraduate Training Program for Innovation and Entrepreneurship(201610721035)Shaanxi Provincial Education Department Foundation(16JK1050)School-level Key Projects of Baoji University of Arts and Sciences(ZK16056)
基金the Start Up Foundation of Jiangsu University(11JDG153).
文摘Decoration of metal-organic framework(MOF)has been considered as an effective route to improve the photoelectrochemical(PEC)performance of TiO_(2),but there is still a lack of understanding of the regulatory structure.Herein,Ni-MOF was rationally introduced by in-situ etching method,which helps for artificially regulating the coordination state of Ni sites.The photocurrent density(0.81 mA/cm^(2))and IPCE value(33.1%)of TiO_(2)-MOF-2 are about twice higher than that of pristine TiO_(2) due to the rich unsaturated sites of Ni-MOF.Meanwhile,the saturated coordination has caused the decline of PEC performance because of the obvious steric hindrance.Therefore,this work presents an insight for the effect of coordination state on PEC activity especially in MOF system.
