scholarly journals Three-Dimensional Hierarchical Porous Structure of PPy/Porous-Graphene to Encapsulate Polysulfides for Lithium/Sulfur Batteries

Nanomaterials ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 606 ◽  
Author(s):  
Yongguang Zhang ◽  
Zhumabay Bakenov ◽  
Taizhe Tan ◽  
Jin Huang
Keyword(s):  
Porous Structure ◽  
In Situ Polymerization ◽  
Three Dimensional ◽  
Reversible Capacity ◽  
Electrochemical Performances ◽  
Hierarchical Porous Structure ◽  
Porous Graphene ◽  
Pyrrole Monomer ◽  
Hierarchical Porous

Herein, we demonstrate the fabrication of a three-dimensional (3D) polypyrrole-coated-porous graphene (PPy/PG) composite through in-situ polymerization of pyrrole monomer on PG surface. The PPy/PG displays a 3D hierarchical porous structure and the resulting PPy/PG hybrid serves as a conductive trap to lithium polysulfides enhancing the electrochemical performances. Owing to the superior conductivity and peculiar structure, a high initial discharge capacity of 1020 mAh g−1 and the reversible capacity of 802 mAh g−1 over 200 cycles are obtained for the S/PPy/PG cathode at 0.1 C, remaining the remarkable cyclic stability. In addition, the S/PPy/PG cathodes demonstrate an excellent rate performance exhibiting 477 mAh g−1 at 2 C.

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.

Embedding SiO2into graphene oxide in situ to generate 3D hierarchical porous graphene laminates for high performance lithium–sulfur batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (98) ◽  
pp. 80353-80356 ◽  
Author(s):  
Wangliang Wu ◽  
Chunying Wan ◽  
Chuxin Wu ◽  
Lunhui Guan
Keyword(s):  
Graphene Oxide ◽  
Self Assembly ◽  
High Performance ◽  
Reversible Capacity ◽  
Cycling Performance ◽  
Functionalized Graphene Oxide ◽  
Porous Graphene ◽  
Hierarchical Porous ◽  
Lithium Sulfur Batteries

3D hierarchical porous graphene laminates through self-assembly of functionalized graphene oxide embedded with SiO2in situas a carbon host material for sulfur cathode, exhibits high reversible capacity, stable cycling performance as well as excellent rate capabilities.

A metal-catalyst free, flexible and free-standing chitosan/vacuum-stripped graphene/polypyrrole three dimensional electrode interface for high performance dopamine sensing

2014 ◽  
Vol 2 (17) ◽  
pp. 2478-2482 ◽  
Author(s):  
Jing Liu ◽  
Ziming He ◽  
Jingwen Xue ◽  
Timothy Thatt Yang Tan
Keyword(s):  
Porous Structure ◽  
High Performance ◽  
Three Dimensional ◽  
Metal Catalyst ◽  
Hierarchical Porous Structure ◽  
Free Standing ◽  
Catalyst Free ◽  
Hierarchical Porous ◽  
Electrode Interface

A free-standing chitosan/vacuum stripped graphene/polypyrrole scaffold with a hierarchical porous structure was demonstrated as a high performance dopamine sensing electrode.

Preparation, characterization, and properties of graphene-based composite aerogels via in situ polymerization and three-dimensional self-assembly from graphene oxide solution

RSC Advances ◽  
2016 ◽  
Vol 6 (82) ◽  
pp. 78538-78547 ◽  
Author(s):  
Haiming Cheng ◽  
Huafei Xue ◽  
Guangdong Zhao ◽  
Changqing Hong ◽  
Xinghong Zhang
Keyword(s):  
Graphene Oxide ◽  
Phase Separation ◽  
Self Assembly ◽  
In Situ Polymerization ◽  
Three Dimensional ◽  
One Pot ◽  
Hierarchical Porous ◽  
Composite Aerogels ◽  
Polymerization Induced Phase Separation

In this work, hierarchical porous graphene-based composite aerogels are synthesized by a simple and facile one-pot polymerization-induced phase separation.

A novel fabrication approach for three-dimensional hierarchical porous metal oxide/carbon nanocomposites for enhanced solar photocatalytic performance

2017 ◽  
Vol 7 (9) ◽  
pp. 1965-1970 ◽  
Author(s):  
Huan Liu ◽  
Xuan Liu ◽  
Shanli Mu ◽  
Shuang Wang ◽  
Shulan Wang ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Porous Structure ◽  
Photocatalytic Performance ◽  
Three Dimensional ◽  
Porous Metal ◽  
Hierarchical Porous Structure ◽  
Carbon Nanocomposites ◽  
Novel Approach ◽  
Hierarchical Porous

A novel approach for the fabrication of metal oxide/C composites with a hierarchical porous structure is proposed.

Three-dimensional nitrogen and phosphorus co-doped carbon quantum dots/reduced graphene oxide composite aerogels with a hierarchical porous structure as superior electrode materials for supercapacitors

2019 ◽  
Vol 7 (46) ◽  
pp. 26311-26325 ◽  
Author(s):  
Jingying Li ◽  
Xiaoru Yun ◽  
Zhongliang Hu ◽  
Liujiang Xi ◽  
Na Li ◽  
...  
Keyword(s):  
Porous Structure ◽  
Electrode Materials ◽  
Three Dimensional ◽  
Carbon Quantum Dots ◽  
Hierarchical Porous Structure ◽  
Nitrogen And Phosphorus ◽  
Composite Aerogel ◽  
Reduced Graphene ◽  
Hierarchical Porous ◽  
Composite Aerogels

A novel 3D N, P-CQDs/rGO composite aerogel with a hierarchical porous structure is prepared, and excellent supercapacitive properties are achieved.

Larch-derived hierarchical nitrogen-doped carbon with echinus-like architecture for supercapacitor applications

Holzforschung ◽  
2020 ◽  
Vol 74 (5) ◽  
pp. 529-538
Author(s):  
Honglei Chen ◽  
Lei Sha ◽  
Yujie Zhang ◽  
Shoujuan Wang ◽  
Fangong Kong ◽  
...  
Keyword(s):  
Porous Structure ◽  
High Performance ◽  
High Specific Capacitance ◽  
Hierarchical Porous Structure ◽  
Nitrogen Doped ◽  
Excellent Electrochemical Performance ◽  
Hierarchical Porous ◽  
Nitrogen Doped Carbon ◽  
Performance Rate

AbstractEchinus-like nitrogen-doped carbon with a hierarchical porous structure was synthesized from green larch waste and urea via liquid in situ doping and high-temperature carbonization. Benefitting from a large specific surface area (649 m2 g−1) and hierarchical porous structure, the nitrogen-doped carbon exhibited excellent electrochemical performance for supercapacitors. Remarkably, the echinus-like nitrogen-doped carbon achieved a high specific capacitance of 340 F g−1 at a current density of 1 A g−1 in 6 M KOH electrolyte as well as a good performance rate and stability (with a capacitance retention of 98% after 5000 cycles). This capacitance was almost 1.5 times higher than that of undoped carbon due to the contribution of the pseudocapacitance from the nitrogen doping. Larch sawdust is a promising carbon source for fabricating inexpensive, sustainable and high-performance supercapacitor materials.

Mycelial pellet-derived heteroatom-doped carbon nanosheets with a three-dimensional hierarchical porous structure for efficient capacitive deionization

2019 ◽  
Vol 6 (5) ◽  
pp. 1430-1442 ◽  
Author(s):  
Yajing Huang ◽  
Jingling Yang ◽  
Lingling Hu ◽  
Dehua Xia ◽  
Qing Zhang ◽  
...  
Keyword(s):  
Porous Structure ◽  
Porous Carbon ◽  
Three Dimensional ◽  
Capacitive Deionization ◽  
Hierarchical Porous Structure ◽  
Hierarchical Porous Carbon ◽  
Carbon Nanosheets ◽  
Mycelial Pellet ◽  
Hierarchical Porous

The mycelial pellet-derived hierarchical porous carbon nanosheets were fabricated facilely and showed high electrosorption capacity of 18.71 mg g−1 for capacitive deionization.

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