Ultrathin and highly-ordered CoO nanosheet arrays for lithium-ion batteries with high cycle stability and rate capability

2014 ◽  
Vol 2 (16) ◽  
pp. 5625-5630 ◽  
Author(s):  
Dongdong Li ◽  
Liang-Xin Ding ◽  
Suqing Wang ◽  
Dandan Cai ◽  
Haihui Wang

Ultrathin and highly-ordered 2D CoO nanosheet arrays exhibit superior electrochemical performance as an attractive anode material for LIBs.

2013 ◽  
Vol 1540 ◽  
Author(s):  
Chia-Yi Lin ◽  
Chien-Te Hsieh ◽  
Ruey-Shin Juang

ABSTRACTAn efficient microwave-assisted polyol (MP) approach is report to prepare SnO2/graphene hybrid as an anode material for lithium ion batteries. The key factor to this MP method is to start with uniform graphene oxide (GO) suspension, in which a large amount of surface oxygenate groups ensures homogeneous distribution of the SnO2 nanoparticles onto the GO sheets under the microwave irradiation. The period for the microwave heating only takes 10 min. The obtained SnO2/graphene hybrid anode possesses a reversible capacity of 967 mAh g-1 at 0.1 C and a high Coulombic efficiency of 80.5% at the first cycle. The cycling performance and the rate capability of the hybrid anode are enhanced in comparison with that of the bare graphene anode. This improvement of electrochemical performance can be attributed to the formation of a 3-dimensional framework. Accordingly, this study provides an economical MP route for the fabrication of SnO2/graphene hybrid as an anode material for high-performance Li-ion batteries.


2016 ◽  
Vol 674 ◽  
pp. 174-178 ◽  
Author(s):  
Zhiliang Xiu ◽  
Muhammad Hilmy Alfaruqi ◽  
Jihyeon Gim ◽  
Jinju Song ◽  
Sungjin Kim ◽  
...  

2022 ◽  
Vol 9 ◽  
Author(s):  
Long-Long Ren ◽  
Lin-Hui Wang ◽  
Yu-Feng Qin ◽  
Qiang Li

In order to solve the poor cycle stability and the pulverization of cobalt sulfides electrodes, a series of amorphous and crystalline cobalt sulfides were prepared by one-pot solvothermal synthesis through controlling the reaction temperatures. Compared to the crystalline cobalt sulfide electrodes, the amorphous cobalt sulfide electrodes exhibited superior electrochemical performance. The high initial discharge and charge capacities of 2,132 mAh/g and 1,443 mAh/g at 200 mA/g were obtained. The reversible capacity was 1,245 mAh/g after 200 cycles, which is much higher than the theoretical capacity. The specific capability was 815 mAh/g at 800 mA/g and increased to 1,047 mAh/g when back to 100 mA/g, indicating the excellent rate capability. The outstanding electrochemical performance of the amorphous cobalt sulfide electrodes could result from the unique characteristics of more defects, isotropic nature, and the absence of grain boundaries for amorphous nanostructures, indicating the potential application of amorphous cobalt sulfide as anodes for lithium-ion batteries.


2020 ◽  
Vol 8 (4) ◽  
pp. 1939-1946 ◽  
Author(s):  
Sae Hoon Lim ◽  
Gi Dae Park ◽  
Dae Soo Jung ◽  
Jong-Heun Lee ◽  
Yun Chan Kang

Nickel hydroxy chloride was studied as an efficient material for lithium ion batteries. Ni(OH)Cl showed high capacity, good cycle stability, and great rate capability through the formation of Ni(OH)2/NiCl2 nanocomposite heterointerfaces.


Nanoscale ◽  
2018 ◽  
Vol 10 (47) ◽  
pp. 22203-22214 ◽  
Author(s):  
Zhiming Zheng ◽  
Hong-Hui Wu ◽  
Huixin Chen ◽  
Yong Cheng ◽  
Qiaobao Zhang ◽  
...  

A high-performance anode material of Cu3Si-SCG is developed with outstanding rate capability and cycle stability for lithium-ion batteries.


2013 ◽  
Vol 28 (5) ◽  
pp. 515-520 ◽  
Author(s):  
Zhen-Jun YU ◽  
Yan-Li WANG ◽  
Hong-Gui DENG ◽  
Liang ZHAN ◽  
Guang-Zhi YANG ◽  
...  

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