scholarly journals Ruthenium nanocrystal decorated vertical graphene nanosheets@Ni foam as highly efficient cathode catalysts for lithium-oxygen batteries

2016 ◽  
Vol 8 (7) ◽  
pp. e286-e286 ◽  
Author(s):  
Dawei Su ◽  
Dong Han Seo ◽  
Yuhang Ju ◽  
ZhaoJun Han ◽  
Kostya Ostrikov ◽  
...  
Keyword(s):  
Graphene Nanosheets ◽  
Ni Foam ◽  
Cathode Catalysts ◽  
Highly Efficient ◽  
Lithium Oxygen Batteries

scholarly journals 3D web freestanding RuO2–Co3O4 nanowires on Ni foam as highly efficient cathode catalysts for Li–O2 batteries

RSC Advances ◽  
2018 ◽  
Vol 8 (41) ◽  
pp. 23397-23403 ◽  
Author(s):  
Zhuo-Liang Jiang ◽  
Jing Xie ◽  
Cong-Shan Luo ◽  
Meng-Yang Gao ◽  
Huan-Liang Guo ◽  
...  
Keyword(s):  
High Capacity ◽  
Ni Foam ◽  
Term Operation ◽  
Cathode Catalysts ◽  
Highly Efficient ◽  
3D Web

Freestanding RuO2–Co3O4 nanowires on Ni foam were synthesized and applied as a cathode in Li–O2 battery. This cathode can deliver a high capacity of 9620 mA h g−1 and stable long-term operation exceeding 122 cycles at 100 mA g−1.

scholarly journals Graphene/MoS2/FeCoNi(OH)x and Graphene/MoS2/FeCoNiPx multilayer-stacked vertical nanosheets on carbon fibers for highly efficient overall water splitting

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xixi Ji ◽  
Yanhong Lin ◽  
Jie Zeng ◽  
Zhonghua Ren ◽  
Zijia Lin ◽  
...  
Keyword(s):  
Water Splitting ◽  
Carbon Fibers ◽  
Graphene Nanosheets ◽  
Water Electrolysis ◽  
Hybrid Structure ◽  
Hydrogen Energy ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Stable Oxygen ◽  
Excellent Stability

AbstractDevelopment of excellent and cheap electrocatalysts for water electrolysis is of great significance for application of hydrogen energy. Here, we show a highly efficient and stable oxygen evolution reaction (OER) catalyst with multilayer-stacked hybrid structure, in which vertical graphene nanosheets (VGSs), MoS2 nanosheets, and layered FeCoNi hydroxides (FeCoNi(OH)x) are successively grown on carbon fibers (CF/VGSs/MoS2/FeCoNi(OH)x). The catalyst exhibits excellent OER performance with a low overpotential of 225 and 241 mV to attain 500 and 1000 mA cm−2 and small Tafel slope of 29.2 mV dec−1. Theoretical calculation indicates that compositing of FeCoNi(OH)x with MoS2 could generate favorable electronic structure and decrease the OER overpotential, promoting the electrocatalytic activity. An alkaline water electrolyzer is established using CF/VGSs/MoS2/FeCoNi(OH)x anode for overall water splitting, which generates a current density of 100 mA cm−2 at 1.59 V with excellent stability over 100 h. Our highly efficient catalysts have great prospect for water electrolysis.

scholarly journals 3D Graphene Nanosheets from Plastic Waste for Highly Efficient HTM free Perovskite Solar Cells

2021 ◽  
Author(s):  
Sandeep Pandey ◽  
Amit Kumar ◽  
Manoj Karakoti ◽  
Kuldeep K. Garg ◽  
Aniket Rana ◽  
...  
Keyword(s):  
Solar Cells ◽  
Graphene Nanosheets ◽  
Perovskite Solar Cells ◽  
Hole Transport ◽  
Plastic Waste ◽  
Waste Plastic ◽  
3D Graphene ◽  
Highly Efficient ◽  
First Time

Herein, we report the first time application of waste plastic derived 3D graphene nanosheets (GNs) for hole transport material (HTM) free perovskite solar cells (PSCs), where 3D GNs has been...

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