Excellent Capacitive Performance of a Three-Dimensional Hierarchical Porous Graphene/Carbon Composite with a Superhigh Surface Area

2014 ◽  
Vol 20 (41) ◽  
pp. 13314-13320 ◽  
Author(s):  
Xue Jin Li ◽  
Wei Xing ◽  
Jin Zhou ◽  
Gui Qiang Wang ◽  
Shu Ping Zhuo ◽  
...  
Keyword(s):  
Surface Area ◽  
Three Dimensional ◽  
Carbon Composite ◽  
Capacitive Performance ◽  
Porous Graphene ◽  
Hierarchical Porous

Synthesis of Se/chitosan-derived hierarchical porous carbon composite as Li–Se battery cathode

2017 ◽  
Vol 10 (02) ◽  
pp. 1650074 ◽  
Author(s):  
Cheng Chen ◽  
Chenhao Zhao ◽  
Zhibiao Hu ◽  
Kaiyu Liu
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Discharge Capacity ◽  
Porous Carbon ◽  
Carbon Composite ◽  
High Rate ◽  
Electrochemical Performances ◽  
Hierarchical Porous Carbon ◽  
Hierarchical Porous

The hierarchical porous carbon with overall macropores and surface micropores has been prepared from carbonization of chitosan/[Formula: see text][Formula: see text] gel-like composite. The specific surface area and pore volume of this carbon can come to 2358.9[Formula: see text][Formula: see text] g[Formula: see text] and 1.14[Formula: see text]cm3 g[Formula: see text], respectively, and the active component Se with amorphous structure is uniformly encapsulated into the microporous structure to form Se/carbon composite. As Li–Se battery cathode, the composite delivers a second discharge capacity of 537.6[Formula: see text]mAh g[Formula: see text] at 0.2[Formula: see text]C, and a discharge capacity of 517.9[Formula: see text]mA h g[Formula: see text] can be retained after 100 cycles. Even at a high rate of 5[Formula: see text]C, the composite still reveals a stable discharge capacity of 325.2[Formula: see text]mAh g[Formula: see text]. The excellent electrochemical performances of Se/carbon composite may attribute to high specific surface area and hierarchical porous feature.

A hierarchical porous graphene/nickel anode that simultaneously boosts the bio- and electro-catalysis for high-performance microbial fuel cells

RSC Advances ◽  
2014 ◽  
Vol 4 (42) ◽  
pp. 21788-21793 ◽  
Author(s):  
Yan Qiao ◽  
Xiao-Shuai Wu ◽  
Cai-Xia Ma ◽  
Hong He ◽  
Chang Ming Li
Keyword(s):  
Fuel Cells ◽  
Porous Structure ◽  
Microbial Fuel Cells ◽  
High Performance ◽  
Composite Electrode ◽  
Three Dimensional ◽  
Hierarchical Porous Structure ◽  
Porous Graphene ◽  
Hierarchical Porous ◽  
Electro Catalysis

A three-dimensional graphene/nickel composite electrode with a hierarchical porous structure is developed to simultaneously boost the bio- and electro-catalysis for high-performance microbial fuel cells.

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