Asymmetric Supercapacitors Based on Activated-Carbon-Coated Carbon Nanotubes

2015 ◽  
Vol 2 (3) ◽  
pp. 396-403 ◽  
Author(s):  
Kaiyuan Shi ◽  
Igor Zhitomirsky
Keyword(s):  
Carbon Nanotubes ◽  
Activated Carbon ◽  
Asymmetric Supercapacitors ◽  
Carbon Coated ◽  
Coated Carbon

High Performance Polymer Thermoelectric Composite Achieved by Carbon-Coated Carbon Nanotubes Network

2019 ◽  
Vol 2 (4) ◽  
pp. 2427-2434 ◽  
Author(s):  
Delong Li ◽  
Chengzhi Luo ◽  
Yuexing Chen ◽  
Dan Feng ◽  
Youning Gong ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
High Performance ◽  
High Performance Polymer ◽  
Carbon Coated ◽  
Polymer Thermoelectric ◽  
Coated Carbon

Phytic acid-guided ultra-thin N,P co-doped carbon coated carbon nanotubes for efficient all-pH electrocatalytic hydrogen evolution

Nanoscale ◽  
2019 ◽  
Vol 11 (47) ◽  
pp. 23027-23034 ◽  
Author(s):  
Fei Xiao ◽  
Zhimin Chen ◽  
Hao Wu ◽  
Ying Wang ◽  
Erping Cao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Evolution ◽  
Phytic Acid ◽  
Hydrogen Evolution Reaction ◽  
Metal Free ◽  
Carbon Coated ◽  
Coated Carbon ◽  
Co Doped

An ultra-thin N, P co-doped carbon (NPC) was constructed on CNT by selecting phytic acid as a “guide”. The obtained CNT@NPC performs as an efficient and robust metal-free electrocatalyst for pH-universal hydrogen evolution reaction.

Fabrication of MnFe2O4 and MnCO3 Nanoparticles Anchored on Amorphous Carbon-Coated Carbon Nanotubes for High-Performance Lithium Batteries and Supercapacitors

NANO ◽  
2018 ◽  
Vol 13 (05) ◽  
pp. 1850050 ◽  
Author(s):  
Quanwu Wen ◽  
Shaohua Zhang ◽  
Mingwei Sun ◽  
Rencheng Jin
Keyword(s):  
Carbon Nanotubes ◽  
Amorphous Carbon ◽  
Transition Metal Oxides ◽  
Lithium Batteries ◽  
High Performance ◽  
Specific Capacity ◽  
New Strategy ◽  
Carbon Coated ◽  
High Theoretical Capacity ◽  
Coated Carbon

Transition metal oxides as Li-ion batteries (LIBs) anodes have attracted much attention because of their high theoretical capacity. However, the large volume change and low electrical conductivity still hinder their application in LIBs. In this work, a new strategy is proposed to enhance the electrochemical performance by anchoring ultrafine MnFe2O4 and MnCO3 ([Formula: see text][Formula: see text]nm) on amorphous carbon-coated carbon nanotubes. Benefiting from the unique structure, the electrode displays excellent cyclability with a reversible specific capacity of 1012[Formula: see text]mAh g[Formula: see text] at 0.1[Formula: see text]A g[Formula: see text] after 100 cycles and outstanding rate performance accompanied by a high specific capacity of 568[Formula: see text]mAh g[Formula: see text] at 5[Formula: see text]A g[Formula: see text] as anode for lithium batteries. When evaluated as supercapacitors, the electrode delivers the specific capacitance of 588.9[Formula: see text]F g[Formula: see text] at a current density of 1[Formula: see text]A g[Formula: see text] and maintains the capacitance retention 94.7% after 4000 cycles at 5[Formula: see text]A g[Formula: see text].

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