Multiwalled Carbon Nanotubes/Co3O4Nanocomposites and Its Electrochemical Performance in Lithium Storage

2004 ◽  
Vol 33 (12) ◽  
pp. 1560-1561 ◽  
Author(s):  
Yan Shan ◽  
Lian Gao
2016 ◽  
Vol 34 (3) ◽  
pp. 481-486 ◽  
Author(s):  
Łukasz Majchrzycki ◽  
Mariusz Walkowiak ◽  
Agnieszka Martyła ◽  
Mikhail Y. Yablokov ◽  
Marek Nowicki ◽  
...  

AbstractNowadays reduced graphene oxide (rGO) is regarded as a highly interesting material which is appropriate for possible applications in electrochemistry, especially in lithium-ion batteries (LIBs). Several methods were proposed for the preparation of rGO-based electrodes, resulting in high-capacity LIBs anodes. However, the mechanism of lithium storage in rGO and related materials is still not well understood. In this work we focused on the proposed mechanism of favorable bonding sites induced by additional functionalities attached to the graphene planes. This mechanism might increase the capacity of electrodes. In order to verify this hypothesis the composite of non-reduced graphene oxide (GO) with multiwalled carbon nanotubes electrodes was fabricated. Electrochemical properties of GO composite anodes were studied in comparison with similarly prepared electrodes based on rGO. This allowed us to estimate the impact of functional groups on the reversible capacity changes. As a result, it was shown that oxygen containing functional groups of GO do not create, in noticeable way, additional active sites for the electrochemical reactions of lithium storage, contrary to what has been postulated previously.


Nanoscale ◽  
2011 ◽  
Vol 3 (4) ◽  
pp. 1798 ◽  
Author(s):  
Chuanxin Zhai ◽  
Ning Du ◽  
Hui Zhang ◽  
Jingxue Yu ◽  
Ping Wu ◽  
...  

NANO ◽  
2017 ◽  
Vol 12 (04) ◽  
pp. 1750051 ◽  
Author(s):  
Manyuan Cai ◽  
Xiaogang Sun ◽  
Yanyan Nie ◽  
Wei Chen ◽  
Zhiwen Qiu ◽  
...  

Pre-lithiated multiwalled carbon nanotube anode was prepared by internal short circuit approach(ISC) for 5[Formula: see text]min, 30[Formula: see text]min, 60[Formula: see text]min and 120[Formula: see text]min respectively. Lithium ion capacitors (LICs) were assembled by using pre-lithiated multiwalled carbon nanotubes as anodes and activated carbon (AC) as cathodes. The structure of multiwalled carbon nanotubes and electrodes were investigated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The electrochemical performance of pre-lithiated multiwalled carbon nanotube electrodes and pristine carbon nanotube electrodes were tested by galvanostatic charge/discharge and electrochemical impedance. The results indicated that pre-lithiation carbon nanotubes greatly improved the charge/discharge performance of LICs. The energy density was four times than conventional electric double-layer capacitors (EDLCs) at the current density of 100[Formula: see text]mA/g. The LICs achieved a specific capacitance of 59.3[Formula: see text]F/g at the current density of 100[Formula: see text]mA/g with 60[Formula: see text]min pre-lithiatiation process. The maximum energy density and power density was 96[Formula: see text]Wh/kg and 4035[Formula: see text]W/kg, respectively. The energy density still remained about 89.0% after 1000 cycles. The LIC showed excellent supercapacitor performance.


2017 ◽  
Vol 28 (15) ◽  
pp. 155403 ◽  
Author(s):  
Sajad Yazdani ◽  
Raana Kashfi-Sadabad ◽  
Alessandro Palmieri ◽  
William E Mustain ◽  
Michael Thompson Pettes

2014 ◽  
Vol 125 ◽  
pp. 170-175 ◽  
Author(s):  
Xinlu Li ◽  
Tongtao Li ◽  
Qineng Zhong ◽  
Kun Du ◽  
Hongyi Li ◽  
...  

2015 ◽  
Vol 64 ◽  
pp. 106-111 ◽  
Author(s):  
Ping Wu ◽  
Kongwei Xie ◽  
Xiali Xu ◽  
Jianping Li ◽  
Yawen Tang ◽  
...  

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