scholarly journals Gelation: Three-Dimensional Shape Engineered, Interfacial Gelation of Reduced Graphene Oxide for High Rate, Large Capacity Supercapacitors (Adv. Mater. 4/2014)

2014 ◽  
Vol 26 (4) ◽  
pp. 505-505 ◽  
Author(s):  
Uday Narayan Maiti ◽  
Joonwon Lim ◽  
Kyung Eun Lee ◽  
Won Joon Lee ◽  
Sang Ouk Kim
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Three Dimensional ◽  
High Rate ◽  
Large Capacity ◽  
Reduced Graphene ◽  
Dimensional Shape ◽  
Three Dimensional Shape

Three-dimensional porous graphene/polyaniline composites for high-rate electrochemical capacitors

2014 ◽  
Vol 2 (41) ◽  
pp. 17489-17494 ◽  
Author(s):  
Qinqin Zhou ◽  
Yingru Li ◽  
Liang Huang ◽  
Chun Li ◽  
Gaoquan Shi
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Three Dimensional ◽  
Electrochemical Capacitors ◽  
Rate Capability ◽  
High Rate ◽  
Porous Graphene ◽  
Reduced Graphene ◽  
Polyaniline Composites ◽  
Porous Composites

Three-dimensional porous composites of reduced graphene oxide and polyaniline prepared by electro-codeposition exhibited much higher areal specific capacitances and greatly improved rate capability compared with those of their individual components.

scholarly journals Further Thermal Reduction of Reduced Graphene Oxide Aerogel with Excellent Rate Performance for Supercapacitors

2019 ◽  
Vol 9 (11) ◽  
pp. 2188 ◽  
Author(s):  
Peihui Luo ◽  
Ying Lin
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Current Density ◽  
Three Dimensional ◽  
Rate Capability ◽  
Thermal Reduction ◽  
High Rate ◽  
Rate Performance ◽  
Freeze Dried ◽  
Reduced Graphene

Preparation of pure three-dimensional graphene (3DG) with high rate performance for supercapacitors is critical for fast rate charge/discharge. Here, 3DG was prepared via thermal annealing of freeze-dried reduced graphene oxide (RGO) hydrogel under inert gas protection. The formed 3DG as an electrode material for supercapacitors revealed a specific capacitance of 115 F·g−1 at a current density of 1 A·g−1, and a high capacitance retention of 70% as current density increased to 40 A·g−1. The excellent rate capability was mainly attributed to the reserved porous structure and higher electrical conductivity for 3DG after thermal reduction than its RGO hydrogel precursor.

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