Polyoxometalate-Derived Hexagonal Molybdenum Nitrides (MXenes) Supported by Boron, Nitrogen Codoped Carbon Nanotubes for Efficient Electrochemical Hydrogen Evolution from Seawater

Miao, Jun1,2; Lang, Zhongling3; Zhang, Xinyu4,5; Kong, Weiguang1; Peng, Ouwen1; Yang, Ye2; Wang, Shuangpeng2; Cheng, Jiaji6; He, Tingchao6; Amini, Abbas7; Wu, Qingyin8; Zheng, Zhiping4,5,9; Tang, Zikang2; Cheng, Chun1

2019-02-21

10.1002/adfm.201805893

ADVANCED FUNCTIONAL MATERIALS   影响因子和分区

1616-301X

1616-3028

MXenes and doped carbon nanotubes (CNTs) have entered into research arenas for high-rate energy storage and conversion. Herein, a method of postsynthesis of MXenes in boron, nitrogen codoped CNTs (BNCNTs) is reported with their electrocatalytical hydrogen evolution performance. The encapsulation of hexagonal molybdenum nitrate nanoparticles (h-MoN NPs) into BNCNTs protects h-MoN NPs from agglomeration and poisoning in the complex environment. In principle, the synergism of B and N dopants on the doped CNTs and confined h-MoN NPs produces extremely active sites for electrochemical hydrogen evolution. Density functional theory calculations reveal that the active sites for hydrogen evolution originate from the synergistic effect of h-MoN(001)/CN (graphitic N doping) and h-MoN(001)/BNC. The h-MoN@BNCNT electrocatalyst exhibits a small overpotential of 78 mV at 10 mA cm(-2) and Tafel slope of 46 mV per decade, which are dramatically improved over all reported MoN-based materials and doped CNTs. Additionally, it also exhibits outstanding electrochemical stability in environments with various pH values and seawater media from South China Sea.

density functional theory calculations doped carbon nanotubes hydrogen evolution reaction MXenes polyoxometalate

SCI ; EI

英语

NI论文

第一 ; 通讯

Fundo para o Desenvolvimento das Ciencias e da Tecnologia[FDCT/063/2016/A2] ; Fundo para o Desenvolvimento das Ciencias e da Tecnologia[FDCT/199/2017/A3]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000459826500004

WILEY-V C H VERLAG GMBH

20185106255987

Boron ; Density functional theory ; Electrocatalysis ; Electrocatalysts ; Hydrogen ; Molybdenum compounds ; Nitrogen ; Oxides ; Seawater ; Yarn

Seawater, Tides and Waves:471.4 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Nanotechnology:761 ; Electrochemistry:801.4.1 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Probability Theory:922.1

MATERIALS SCIENCE

Web of Science

1.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
2.Univ Macau, Key Lab Bioinorgan & Synthet Chem MOE, Inst Appl Phys & Mat Engn, Taipa 999078, Macau, Peoples R China
3.Northeast Normal Univ, Fac Chem, Key Lab Polyoxometalate Sci MOE, Changchun 130024, Jilin, Peoples R China
4.Southern Univ Sci & Technol, Shenzhen Grubbs Inst, Shenzhen 518055, Guangdong, Peoples R China
5.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Guangdong, Peoples R China
6.Shenzhen Univ, Coll Phys & Energy, Shenzhen 518060, Guangdong, Peoples R China
7.Western Sydney Univ, Ctr Infrastruct Engn, Kingswood, NSW 2751, Australia
8.Zhejiang Univ, Dept Chem, Hangzhou 310027, Zhejiang, Peoples R China
9.Univ Arizona, Dept Chem & Biochem, Tucson, AZ 85721 USA

Miao, Jun,Lang, Zhongling,Zhang, Xinyu,et al. Polyoxometalate-Derived Hexagonal Molybdenum Nitrides (MXenes) Supported by Boron, Nitrogen Codoped Carbon Nanotubes for Efficient Electrochemical Hydrogen Evolution from Seawater[J]. ADVANCED FUNCTIONAL MATERIALS,2019,29(8).

Miao, Jun.,Lang, Zhongling.,Zhang, Xinyu.,Kong, Weiguang.,Peng, Ouwen.,...&Cheng, Chun.(2019).Polyoxometalate-Derived Hexagonal Molybdenum Nitrides (MXenes) Supported by Boron, Nitrogen Codoped Carbon Nanotubes for Efficient Electrochemical Hydrogen Evolution from Seawater.ADVANCED FUNCTIONAL MATERIALS,29(8).

Miao, Jun,et al."Polyoxometalate-Derived Hexagonal Molybdenum Nitrides (MXenes) Supported by Boron, Nitrogen Codoped Carbon Nanotubes for Efficient Electrochemical Hydrogen Evolution from Seawater".ADVANCED FUNCTIONAL MATERIALS 29.8(2019).