Catalytic Interfaces‐Enriched Hybrid Hollow Spheres Sulfur Host for Advanced Li–S Batteries

2019 ◽  
Vol 7 (1) ◽  
pp. 1901420 ◽  
Author(s):  
Jin‐Lin Yang ◽  
Shi‐Xi Zhao ◽  
Xiang‐Tian Zeng ◽  
Yi‐Ming Lu ◽  
Guo‐zhong Cao
Keyword(s):  
Hollow Spheres ◽  
Sulfur Host ◽  
Catalytic Interfaces

Mo2C/C Hierarchical Double‐Shelled Hollow Spheres as Sulfur Host for Advanced Li‐S Batteries

2021 ◽  
Author(s):  
Wanli Li ◽  
Kai Chen ◽  
Qingchi Xu ◽  
Xingyun Li ◽  
Qian Zhang ◽  
...  
Keyword(s):  
Hollow Spheres ◽  
Sulfur Host

Mo2C/C Hierarchical Double‐Shelled Hollow Spheres as Sulfur Host for Advanced Li‐S Batteries

2021 ◽  
Author(s):  
Wanli Li ◽  
Kai Chen ◽  
Qingchi Xu ◽  
Xingyun Li ◽  
Qian Zhang ◽  
...  
Keyword(s):  
Hollow Spheres ◽  
Sulfur Host

Hollow spheres of Mo2C@C as synergistically confining sulfur host for superior Li–S battery cathode

2020 ◽  
Vol 332 ◽  
pp. 135482 ◽  
Author(s):  
Zhuosen Wang ◽  
Xijun Xu ◽  
Zhengbo Liu ◽  
Shaomin Ji ◽  
Sahar Osman Ahmed Idris ◽  
...  
Keyword(s):  
Hollow Spheres ◽  
Sulfur Host

Nano-Folded Gold Electrocatalysts Enhance the Selectivity of Carbon Dioxide Reduction

2019 ◽  
Author(s):  
Kam Sang Kwok ◽  
Yuxuan Wang ◽  
Michael Cao ◽  
Hao Shen ◽  
Weinan Xu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Mass Transport ◽  
Gold Film ◽  
X Ray Diffraction ◽  
Thin Gold Film ◽  
Faradaic Efficiency ◽  
X Ray ◽  
Transmission Electron ◽  
Carbon Monoxide Formation ◽  
Catalytic Interfaces

<p>The local structure and geometry of catalytic interfaces can influence the selectivity of chemical reactions. Here, using a pre-strained polymer, we uniaxially compress a thin gold film to form a nano-folded catalyst. We observe two kinds of folds and can tune the ratio of loose to tight folds by varying the extent of pre-strain in the polymer. We characterize the nano-folded catalysts using x-ray diffraction, scanning, and transmission electron microscopy. We observe grain reorientation and coarsening in the nano-folded gold catalysts. Electroreduction of carbon dioxide with these nano-folded catalysts reveals an enhancement of Faradaic efficiency for carbon monoxide formation by a factor of about four. This result suggests that electrolyte mass transport limitations and an increase of the local pH in the tight folds of the catalyst outweigh the effects of alterations in grain characteristics. Together, our studies demonstrate that nano-folded geometries can significantly alter grain characteristics, mass transport, and catalytic selectivity. </p>

Synthesis of Multi-shelled Mn-doped ZnO ∞ Hollow spheres

2009 ◽  
Author(s):  
Zheng-Zheng LI ◽  
Yong ZHANG ◽  
Zhi-Zhan CHEN ◽  
Er-Wei SHI
Keyword(s):  
Hollow Spheres ◽  
Doped Zno ◽  
Mn Doped ◽  
Zno Hollow Spheres

Synthesis of Vanadium-mesoporous Hollow Spheres

2012 ◽  
Vol 27 (7) ◽  
pp. 699-705
Author(s):  
Xiao-Bo SHI ◽  
Yu CHEN ◽  
Yan KONG ◽  
Cheng WU ◽  
Jun WANG
Keyword(s):  
Hollow Spheres

scholarly journals Effect of Reaction Time on Microwave Absorption Properties of Fe3O4 Hollow Spheres Synthesized via Ostwald Ripening

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 2921 ◽  
Author(s):  
Wei Huang ◽  
Yujiang Wang ◽  
Shicheng Wei ◽  
Bo Wang ◽  
Yi Liang ◽  
...  
Keyword(s):  
Reaction Time ◽  
Microwave Absorption ◽  
Ostwald Ripening ◽  
Impedance Matching ◽  
Hollow Spheres ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Magnetic Structures ◽  
Absorption Performance ◽  
Microwave Absorption Performance

Hollow magnetic structures have great potential to be used in the microwave absorbing field. Herein, Fe3O4 hollow spheres with different levels of hollowness were synthesized by the hydrothermal method under Ostwald ripening effect. In addition to their microstructures, the microwave absorption properties of such spheres were investigated. The results show that the grain size and hollowness of Fe3O4 hollow spheres both increase as the reaction time increases. With increasing hollowness, the attenuation ability of electromagnetic wave of Fe3O4 spheres increases first and then decreases, finally increases sharply after the spheres break down. Samples with strong attenuation ability can achieve good impedance matching, which it does preferentially as the absorber thickness increases. Fe3O4 hollow spheres show the best microwave absorption performance when the reaction time is 24 h. The minimum reflection loss (RL (min)) can reach −40 dB, while the thickness is only 3.2 mm.

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