Atomic species derived CoOx clusters on nitrogen doped mesoporous carbon as advanced bifunctional electro-catalysts for Zn-air battery

2020 ◽  
Vol 29 ◽  
pp. 156-162 ◽  
Author(s):  
Kai Huang ◽  
Ruyue Wang ◽  
Shijing Zhao ◽  
Peng Du ◽  
Hao Wang ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Nitrogen Doped ◽  
Air Battery ◽  
Atomic Species

scholarly journals High Capacity and Fast Kinetics of Potassium-Ion Batteries Boosted by Nitrogen-Doped Mesoporous Carbon Spheres

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Jiefeng Zheng ◽  
Yuanji Wu ◽  
Yong Tong ◽  
Xi Liu ◽  
Yingjuan Sun ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Active Sites ◽  
Carbon Materials ◽  
Potassium Ion ◽  
High Rate ◽  
Electrochemical Performances ◽  
Carbon Spheres ◽  
Fast Kinetics ◽  
Nitrogen Doped ◽  
Economic Price

AbstractIn view of rich potassium resources and their working potential, potassium-ion batteries (PIBs) are deemed as next generation rechargeable batteries. Owing to carbon materials with the preponderance of durability and economic price, they are widely employed in PIBs anode materials. Currently, porosity design and heteroatom doping as efficacious improvement strategies have been applied to the structural design of carbon materials to improve their electrochemical performances. Herein, nitrogen-doped mesoporous carbon spheres (MCS) are synthesized by a facile hard template method. The MCS demonstrate larger interlayer spacing in a short range, high specific surface area, abundant mesoporous structures and active sites, enhancing K-ion migration and diffusion. Furthermore, we screen out the pyrolysis temperature of 900 °C and the pore diameter of 7 nm as optimized conditions for MCS to improve performances. In detail, the optimized MCS-7-900 electrode achieves high rate capacity (107.9 mAh g−1 at 5000 mA g−1) and stably brings about 3600 cycles at 1000 mA g−1. According to electrochemical kinetic analysis, the capacitive-controlled effects play dominant roles in total storage mechanism. Additionally, the full-cell equipped MCS-7-900 as anode is successfully constructed to evaluate the practicality of MCS.

Co3Fe7 nanoparticles encapsulated in porous nitrogen-doped carbon nanofiber as bifunctional electrocatalysts for rechargeable zinc-air battery

2021 ◽  
Author(s):  
Miaomiao Liu ◽  
Yulong He ◽  
Jintao Zhang
Keyword(s):  
Oxygen Reduction ◽  
Active Sites ◽  
Carbon Nanofiber ◽  
Nitrogen Doped ◽  
Bifunctional Electrocatalysts ◽  
Air Battery ◽  
Nitrogen Doped Carbon ◽  
Carbon Based

Exploration of inexpensitive and high perfomance carbon-based electrocatalyst with abundant active sites for oxygen reduction and evolution reactions is vital for enhancing the performance of zinc air battery. Herein, the...

A template-directed bifunctional NiSx/nitrogen-doped mesoporous carbon electrocatalyst for rechargeable Zn–air batteries

2019 ◽  
Vol 7 (34) ◽  
pp. 19889-19897 ◽  
Author(s):  
Kai Wan ◽  
Jiangshui Luo ◽  
Xuan Zhang ◽  
Chen Zhou ◽  
Jin Won Seo ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Nitrogen Doped ◽  
Ordered Mesoporous

A highly ordered mesoporous NiSx/nitrogen-doped mesoporous carbon (NiSx/NMC) nanohybrid as a bifunctional oxygen electrocatalyst for rechargeable Zn–air batteries.

Nitrogen-Doped Mesoporous Carbon Derived from Polyaniline

2014 ◽  
Vol 926-930 ◽  
pp. 379-382
Author(s):  
De Yi Zhang ◽  
Li Wen Zheng ◽  
Long Yan Lei
Keyword(s):  
Mesoporous Carbon ◽  
Electronic Devices ◽  
Ordered Mesoporous Carbon ◽  
Additional Contribution ◽  
Electrochemical Capacitance ◽  
Supercapacitive Performance ◽  
Nitrogen Doped ◽  
Ordered Mesoporous ◽  
Capacitance Performance ◽  
A Current

In this paper, we demonstrate the successful fabrication of nitrogen doped ordered mesoporous carbon (PNOMC) materials using polyaniline as precursor. The synthesized PNOMC material exhibits enhanced supercapacitive performance due to the additional contribution from pseudo-capacitance originating from incorporation of nitrogen into the framework of carbon materials. Although the specific surface area of ​​the material is not high (386.2 m2/g), the specific capacitance is as high as the 271 F/g at a current density of 1A/g. The fabrication of nitrogen-doped ordered mesoporous carbon with enhanced electrochemical capacitance performance provides a viable route to promote its applications in electronic devices.

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