Interface engineering in core-shell Co9S8@MoS2 nanocrystals induces enhanced hydrogen evolution in acidic and alkaline media

2021 ◽  
Author(s):  
Jiace Hao ◽  
Hongyin Hu ◽  
Yuan Dong ◽  
Jingwen Hu ◽  
Xinxin Sang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Shell Structure ◽  
Carbon Nanofiber ◽  
Alkaline Media ◽  
Core Shell ◽  
Interface Engineering ◽  
Excellent Activity ◽  
Core Shell Structure ◽  
Acidic And Alkaline Media

Core-shell structure electrocatalysts with excellent activity and stability are promising candidates for the hydrogen evolution reaction (HER). Here, carbon nanofiber-supported Co9S8 nanocrystals fully (F-Co9S8@MoS2/CNFs) and semi-wrapped (S-Co9S8@MoS2/CNFs) with interfaces were...

Advanced Electrocatalysts for Hydrogen Evolution Reaction Based on Core–Shell MoS2/TiO2Nanostructures in Acidic and Alkaline Media

2019 ◽  
Vol 2 (3) ◽  
pp. 2053-2062 ◽  
Author(s):  
Aneela Tahira ◽  
Zafar Hussain Ibupoto ◽  
Raffaello Mazzaro ◽  
Shuji You ◽  
Vittorio Morandi ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Alkaline Media ◽  
Core Shell ◽  
Acidic And Alkaline Media

MoSe2-Amorphous CNT Hierarchical Hybrid Core–Shell Structure for Efficient Hydrogen Evolution Reaction

2020 ◽  
Vol 3 (5) ◽  
pp. 5067-5076 ◽  
Author(s):  
Supratim Maity ◽  
Biswajit Das ◽  
Madhupriya Samanta ◽  
Bikram Kumar Das ◽  
Shrabani Ghosh ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Shell Structure ◽  
Core Shell ◽  
Core Shell Structure

Controllable synthesis of Ni3S2@MOOH/NF (M = Fe, Ni, Cu, Mn and Co) hybrid structure for the efficient hydrogen evolution reaction

2021 ◽  
Vol 50 (39) ◽  
pp. 14001-14008
Author(s):  
Xiaoqiang Du ◽  
Guangyu Ma ◽  
Yanhong Wang ◽  
Xinghua Han ◽  
Xiaoshuang Zhang
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Current Density ◽  
Shell Structure ◽  
Hybrid Structure ◽  
Core Shell ◽  
Controllable Synthesis ◽  
Catalytic Activities ◽  
Core Shell Structure ◽  
A Current

The Ni3S2@NiOOH/NF catalyst with a core–shell structure exhibits a relatively low overpotential of 79 mV for HER at a current density of 10 mA cm−2, which is one of the best catalytic activities reported so far.

scholarly journals Rational synthesis of silicon into polyimide-derived hollow electrospun carbon nanofibers for enhanced lithium storage

e-Polymers ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 491-499 ◽  
Author(s):  
Fan Wang ◽  
Shouzhi Zhang ◽  
Jiawei Zhang ◽  
Manshu Han ◽  
Guoxiang Pan ◽  
...  
Keyword(s):  
Shell Structure ◽  
Carbon Nanofiber ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Superior Performance ◽  
Core Shell ◽  
Discharge Process ◽  
Energy Devices ◽  
Core Shell Structure

AbstractFlexible energy devices with high energy density and long cycle life are considered to be promising applications in portable electronics. In this study, silicon/carbon nanofiber (Si@CNF) core–shell electrode has been prepared by the coaxial electrospinning method. The precursors of polyimide (PI) were for the first time used to form the core–shell structure of Si@CNF, which depicts outstanding flexibility and mechanical strength. The effect of doping concentrations of silicon (Si) nanoparticles embedded in the fiber is investigated as a binder-free anode for lithium-ion batteries. A 15 wt% doped composite electrode demonstrates superior performance, with an initial reversible capacity of 621 mA h g−1 at the current density of 100 mA g−1 and a high capacity retention up to 200 cycles. The excellent cycling performance is mainly due to the carbonized PI core–shell structure, which not only can compensate for the insulation property of Si but also has the ability to buffer the volume expansion during the repeated charge–discharge process.

The influence of ZnO loading amount on the photocatalytic performance of Fe3O4@SiO2@ZnO–Ag composites toward the degradation of organic pollutants and hydrogen evolution

2021 ◽  
Author(s):  
Jian Wang ◽  
Junlin Zhong ◽  
Jinghai Yang ◽  
Xin Qu ◽  
Yukai Zhang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Organic Pollutants ◽  
Shell Structure ◽  
Photocatalytic Performance ◽  
Core Shell ◽  
Photocatalytic Ability ◽  
Core Shell Structure ◽  
Loading Amount

Magnetically reusable Fe3O4@SiO2@ZnO-Ag with well-designed core-shell structure, controllable ZnO loading amount and excellent photocatalytic ability toward organic pollutants degradation and hydrogen evolution were synthesized.

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