Nitrogen Doped Graphene as a High Efficient Electrode for Next Generation Supercapacitors

2013 ◽  
Vol 50 (43) ◽  
pp. 19-26 ◽  
Author(s):  
V. Chabot ◽  
F. M. Hassan ◽  
A. Yu
Keyword(s):  
Next Generation ◽  
Nitrogen Doped ◽  
High Efficient ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

Pyrrolic-structure enriched nitrogen doped graphene for highly efficient next generation supercapacitors

2013 ◽  
Vol 1 (8) ◽  
pp. 2904 ◽  
Author(s):  
Fathy M. Hassan ◽  
Victor Chabot ◽  
Jingde Li ◽  
Brian Kihun Kim ◽  
Luis Ricardez-Sandoval ◽  
...  
Keyword(s):  
Next Generation ◽  
Nitrogen Doped ◽  
Highly Efficient ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

scholarly journals Ruthenium-cobalt nanoalloys encapsulated in nitrogen-doped graphene as active electrocatalysts for producing hydrogen in alkaline media

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Jianwei Su ◽  
Yang Yang ◽  
Guoliang Xia ◽  
Jitang Chen ◽  
Peng Jiang ◽  
...  
Keyword(s):  
Density Functional ◽  
Platinum Group Metal ◽  
Alkaline Media ◽  
Alkaline Water Electrolysis ◽  
Graphene Layers ◽  
Nitrogen Doped ◽  
High Efficient ◽  
Production Of Hydrogen ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

Abstract The scalable production of hydrogen could conveniently be realized by alkaline water electrolysis. Currently, the major challenge confronting hydrogen evolution reaction (HER) is lacking inexpensive alternatives to platinum-based electrocatalysts. Here we report a high-efficient and stable electrocatalyst composed of ruthenium and cobalt bimetallic nanoalloy encapsulated in nitrogen-doped graphene layers. The catalysts display remarkable performance with low overpotentials of only 28 and 218 mV at 10 and 100 mA cm−2, respectively, and excellent stability of 10,000 cycles. Ruthenium is the cheapest platinum-group metal and its amount in the catalyst is only 3.58 wt.%, showing the catalyst high activity at a very competitive price. Density functional theory calculations reveal that the introduction of ruthenium atoms into cobalt core can improve the efficiency of electron transfer from alloy core to graphene shell, beneficial for enhancing carbon–hydrogen bond, thereby lowing ΔGH* of HER.

scholarly journals Nitrogen-doped graphene nanosheets as high efficient catalysts for oxygen reduction reaction

2012 ◽  
Vol 57 (23) ◽  
pp. 3065-3070 ◽  
Author(s):  
SuQin Ci ◽  
YongMin Wu ◽  
JianPing Zou ◽  
LongHua Tang ◽  
ShengLian Luo ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Graphene Nanosheets ◽  
Reduction Reaction ◽  
Nitrogen Doped ◽  
High Efficient ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene
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