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 ◽  
...  
NANO ◽  
2018 ◽  
Vol 13 (05) ◽  
pp. 1850050 ◽  
Author(s):  
Quanwu Wen ◽  
Shaohua Zhang ◽  
Mingwei Sun ◽  
Rencheng Jin

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].


Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 678
Author(s):  
Zhongkai Wu ◽  
Haifu Huang ◽  
Wenhui Xiong ◽  
Shiming Yang ◽  
Huanhuan Huang ◽  
...  

We report a novel Ni3S2 carbon coated (denoted as NCC) rod-like structure prepared by a facile one-pot hydrothermal method and employ it as a binder free electrode in supercapacitor. We coated carbon with glucose as carbon source on the surface of samples and investigated the suitable glucose concentration. The as-obtained NCC rod-like structure demonstrated great performance with a huge specific capacity of 657 C g−1 at 1 A g−1, preeminent rate capability of 87.7% retention, the current density varying to 10 A g−1, and great cycling stability of 76.7% of its original value through 3500 cycles, which is superior to the properties of bare Ni3S2. The result presents a facile, general, viable strategy to constructing a high-performance material for the supercapacitor applications.


2020 ◽  
Vol 305 ◽  
pp. 110300 ◽  
Author(s):  
Ruonan Liu ◽  
Shuxian Sun ◽  
Renqi Zhong ◽  
Hongxue Zhang ◽  
Xiaoliang Wu

Nanoscale ◽  
2019 ◽  
Vol 11 (47) ◽  
pp. 23027-23034 ◽  
Author(s):  
Fei Xiao ◽  
Zhimin Chen ◽  
Hao Wu ◽  
Ying Wang ◽  
Erping Cao ◽  
...  

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.


Nano Letters ◽  
2002 ◽  
Vol 2 (8) ◽  
pp. 827-829 ◽  
Author(s):  
Peter T. Lillehei ◽  
Cheol Park ◽  
Jason H. Rouse ◽  
Emilie J. Siochi

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