Hierarchical heterostructured nickle foam–supported Co3S4 nanorod arrays embellished with edge-exposed MoS2 nanoflakes for enhanced alkaline hydrogen evolution reaction

Peng，O.1,2; Shi，R.1,2; Wang，J.1,2; Zhang，X.1,2; Miao，J.1,2; Zhang，L.1; Fu，Y.1,2; Madhusudan，P.1,2; Liu，K.3; Amini，A.4; Cheng，C.1,2

2020-12-01

10.1016/j.mtener.2020.100513

Materials Today Energy   影响因子和分区

2468-6069

2468-6069

Transition metal chalcogenides with abundant active edge sites and suitable structures for large-scale water splitting in alkaline hydrogen evolution reaction (HER) are challenging but promising. Herein, hierarchical heterostructured nickel foam–supported CoS nanorod arrays embellished with edge-exposed MoS nanoflakes (Edge-MoS/CoS@NFs) as an effective HER catalyst are designed. There into, porous nickel foam and moderately distributed nanorod arrays of Edge-MoS/CoS@NFs provide multiscale pathways for efficient charge and mass transport and significantly enlarge the surfaces for the deposition of MoS flakes. The superhydrophilic/aerophobic surface improves the electrolyte transport and facilitates the detachment of hydrogen bubbles from the surface of the catalyst. The MoS flakes anchored on nanorods are well dispersed with plentiful active sites exposed which enhance the intrinsic activity of active sites owing to the adequate intersection of charge and mass. In addition, there is a synergetic effect of bimetal sulfides, evidenced by increasing the turnover frequency. Therefore, the Edge-MoS/CoS@NF affords a low overpotential (η = 90.3 mV and η = 502.0 mV) and small Tafel slope (61.69 mV dec). This study provides a facile strategy to develop electrocatalysts through the synergy of enhanced thermodynamic and kinetic processes, shedding lights on the advanced design of functional materials for energy chemistry.

Alkaline hydrogen production Edge-exposed nanoflakes Electrocatalysis Hydrophilic/areophobic

SCI ; EI

英语

第一 ; 通讯

Guangdong High-level Personnel of Special Support Program-Outstanding young scholar in science and technology innovation[2015TQ01C543] ; National Natural Science Foundation of China[51776094] ; Guangdong Natural Science Funds for Distinguished Young Scholars[2015A030306044] ; Foundation of Shenzhen Science and Technology Innovation Committee[JCYJ20180302174021198] ; Guangdong Provincial Key Laboratory of Energy Materials for Electric Power[2018B030322001] ; Basic Research Project of Science and Technology Plan of Shenzhen[JCYJ20180504165655180]

Chemistry ; Energy & Fuels ; Materials Science

Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary

WOS:000601397500012

ELSEVIER SCI LTD

20204009292542

Electrolytes ; Alkalinity ; Layered semiconductors ; Molybdenum compounds ; Nickel ; Electrocatalysts ; Hydrogen production ; Nanorods ; Inorganic compounds ; Hydrophilicity ; Functional materials ; Electrocatalysis

Gas Fuels:522 ; Nickel:548.1 ; Electric Batteries and Fuel Cells:702 ; Semiconducting Materials:712.1 ; Nanotechnology:761 ; Chemistry, General:801.1 ; Electrochemistry:801.4.1 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2 ; Solid State Physics:933 ; Materials Science:951

2-s2.0-85091741695

Scopus

1.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Guangdong Provincial Key Laboratory of Energy Materials for Electric Power,Shenzhen,518055,China
3.School of Materials Science and Engineering,Tsinghua University,Beijing,100084,China
4.Center for Infrastructure Engineering,Western Sydney University,Kingswood,2751,Australia

Peng，O.,Shi，R.,Wang，J.,等. Hierarchical heterostructured nickle foam–supported Co3S4 nanorod arrays embellished with edge-exposed MoS2 nanoflakes for enhanced alkaline hydrogen evolution reaction[J]. Materials Today Energy,2020,18.

Peng，O..,Shi，R..,Wang，J..,Zhang，X..,Miao，J..,...&Cheng，C..(2020).Hierarchical heterostructured nickle foam–supported Co3S4 nanorod arrays embellished with edge-exposed MoS2 nanoflakes for enhanced alkaline hydrogen evolution reaction.Materials Today Energy,18.

Peng，O.,et al."Hierarchical heterostructured nickle foam–supported Co3S4 nanorod arrays embellished with edge-exposed MoS2 nanoflakes for enhanced alkaline hydrogen evolution reaction".Materials Today Energy 18(2020).