scholarly journals Enzyme- and metal-free electrochemical sensor for highly sensitive superoxide anion detection based on nitrogen doped hollow mesoporous carbon spheres

2017 ◽  
Vol 227 ◽  
pp. 69-76 ◽  
Author(s):  
Li Liu ◽  
Hongli Zhao ◽  
Libo Shi ◽  
Minbo Lan ◽  
Hongwei Zhang ◽  
...  
Keyword(s):  
Electrochemical Sensor ◽  
Superoxide Anion ◽  
Mesoporous Carbon ◽  
Carbon Spheres ◽  
Anion Detection ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Highly Sensitive

Nitrogen-doped hollow mesoporous carbon spheres as a highly active and stable metal-free electrocatalyst for oxygen reduction

Carbon ◽  
2017 ◽  
Vol 114 ◽  
pp. 177-186 ◽  
Author(s):  
Tingsheng Zhou ◽  
Yao Zhou ◽  
Ruguang Ma ◽  
Zhenzhen Zhou ◽  
Guanghui Liu ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
Mesoporous Carbon ◽  
Carbon Spheres ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Highly Active

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.

Facile Conversion of Radish to Nitrogen-Doped Mesoporous Carbon as Effective Metal-Free Oxygen Reduction Electrocatalysts

ChemNanoMat ◽  
2018 ◽  
Vol 4 (9) ◽  
pp. 954-963 ◽  
Author(s):  
Yu Wang ◽  
Xu Jin ◽  
Ying Pan ◽  
Jianming Li ◽  
Ningning Guo ◽  
...  
Keyword(s):  
Oxygen Reduction ◽  
Mesoporous Carbon ◽  
Free Oxygen ◽  
Nitrogen Doped ◽  
Metal Free

High-level nitrogen-doped, micro/mesoporous carbon as an efficient metal-free electrocatalyst for the oxygen reduction reaction: optimizing the reaction surface area by a solvent-free mechanochemical method

2019 ◽  
Vol 43 (27) ◽  
pp. 10878-10886 ◽  
Author(s):  
Wendu Zhang ◽  
Jiawei Qi ◽  
Peiyao Bai ◽  
Huifen Wang ◽  
Lang Xu
Keyword(s):  
Porous Carbon ◽  
Mesoporous Carbon ◽  
Reduction Reaction ◽  
Milling Process ◽  
Solvent Free ◽  
Mechanochemical Method ◽  
Nitrogen Doped ◽  
Metal Free ◽  
High Level ◽  
Coconut Mesocarp

Acting as an efficient metal-free ORR electrocatalyst, nitrogen-doped porous carbon derived from coconut mesocarp was prepared by a solvent-free ball-milling process.

Sign in / Sign up

Export Citation Format

Share Document