A facile post-process method to enhance crystallinity and electrochemical properties of SnO2/rGO composites with three-dimensional hierarchically porous structure

RSC Advances ◽  
2016 ◽  
Vol 6 (108) ◽  
pp. 106275-106284 ◽  
Author(s):  
Fei Tian ◽  
Xiaobing Wang ◽  
Zhenyu Chen ◽  
Yuming Guo ◽  
Huijun Liang ◽  
...  
Keyword(s):  
Porous Structure ◽  
Freeze Drying ◽  
Three Dimensional ◽  
Hierarchically Porous ◽  
Annealing Temperatures ◽  
Hierarchically Porous Structure ◽  
Air Atmosphere ◽  
Post Process ◽  
Reduced Graphene ◽  
Process Method

In this work, three SnO2/reduced graphene oxide (SnO2/rGO) composites with a three-dimensional hierarchically porous structure were synthesized via freeze drying and different annealing temperatures in an air atmosphere.

Three-dimensional hollow reduced graphene oxide spheres with a hierarchically porous structure for high-performance lithium–sulfur batteries

2019 ◽  
Vol 6 (9) ◽  
pp. 2528-2538
Author(s):  
Mengxia Li ◽  
Ying Dai ◽  
Xinmei Pei ◽  
Wen Chen
Keyword(s):  
Graphene Oxide ◽  
Porous Structure ◽  
High Performance ◽  
Three Dimensional ◽  
Hierarchically Porous ◽  
Hierarchically Porous Structure ◽  
Reduced Graphene ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur ◽  
High Sulfur Loading

A three-dimensional HrGO with a hierarchically porous structure was successfully synthesized as a sulfur-hosting material with high sulfur loading for high-performance lithium–sulfur batteries.

scholarly journals Highly efficient evaporative cooling by all-day water evaporation using hierarchically porous biomass

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jihun Choi ◽  
Hansol Lee ◽  
Bokyeong Sohn ◽  
Minjae Song ◽  
Sangmin Jeon
Keyword(s):  
Porous Structure ◽  
Fiber Length ◽  
Evaporation Rate ◽  
Water Evaporation ◽  
Thickness Direction ◽  
Hierarchically Porous ◽  
Hierarchically Porous Structure ◽  
Length Direction ◽  
Luffa Sponge ◽  
Fiber Thickness

AbstractWe developed a 3D solar steam generator with the highest evaporation rate reported so far using a carbonized luffa sponge (CLS). The luffa sponge consisted of entangled fibers with a hierarchically porous structure; macropores between fibers, micro-sized pores in the fiber-thickness direction, and microchannels in the fiber-length direction. This structure remained after carbonization and played an important role in water transport. When the CLS was placed in the water, the microchannels in the fiber-length direction transported water to the top surface of the CLS by capillary action, and the micro-sized pores in the fiber-thickness direction delivered water to the entire fiber surface. The water evaporation rate under 1-sun illumination was 3.7 kg/m2/h, which increased to 14.5 kg/m2/h under 2 m/s wind that corresponded to the highest evaporation rate ever reported under the same condition. The high evaporation performance of the CLS was attributed to its hierarchically porous structure. In addition, it was found that the air temperature dropped by 3.6 °C when the wind passed through the CLS because of the absorption of the latent heat of vaporization. The heat absorbed by the CLS during water evaporation was calculated to be 9.7 kW/m2 under 1-sun illumination and 2 m/s wind, which was 10 times higher than the solar energy irradiated on the same area (1 kW/m2).

A bio-inspired, hierarchically porous structure with a decoupled fluidic transportation and evaporative pathway toward high-performance evaporation

2021 ◽  
Author(s):  
Jianguo Li ◽  
Chaoji Chen ◽  
Wentao Gan ◽  
Zhihan Li ◽  
Hua Xie ◽  
...  
Keyword(s):  
Porous Structure ◽  
High Performance ◽  
Evaporation Rate ◽  
High Rate ◽  
Hierarchically Porous ◽  
Hierarchically Porous Structure ◽  
High Evaporation Rate

High-rate evaporation is achieved by a delignified reed, featuring hierarchically, 3D porous structure with microchannels surrounding macrochannels, which decouples the transport and evaporation of fluids, contributing to a high evaporation rate.

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