LiV3O8 NANOMATERIAL AS ANODE WITH GOOD CYCLING PERFORMANCE FOR AQUEOUS RECHARGEABLE LITHIUM BATTERIES

2011 ◽  
Vol 04 (04) ◽  
pp. 315-318 ◽  
Author(s):  
L. L. LIU ◽  
W. TANG ◽  
S. TIAN ◽  
Y. SHI ◽  
Y. P. WU ◽  
...  

LiV3O8 nanorod material was prepared by a simple sol–gel method. The electrochemical properties of the as-prepared LiV3O8 in 0.5 M Li2SO4 aqueous electrolyte were studied through cyclic voltammograms (CV) and discharge–charge measurements. Experiments show that this nanorod material can deliver the capacities of 72, 62 and 53 mAh/g at 20, 50, 100 mA/g, respectively. After 50 cycles, it can maintain 64, 47 and 40 mAh/g, corresponding to 88%, 76% and 77% of the initial capacities, which suggest that this nanorode material presents good cycling performance as anode material for aqueous rechargeable lithium batteries.

Ionics ◽  
2017 ◽  
Vol 24 (2) ◽  
pp. 403-412 ◽  
Author(s):  
Nur Azilina Abdul Aziz ◽  
Tuti Katrina Abdullah ◽  
Ahmad Azmin Mohamad

2014 ◽  
Vol 86 (5) ◽  
pp. 651-659 ◽  
Author(s):  
Honglai Zhang ◽  
Jie Yang ◽  
Qichang Xiao ◽  
Zhaohui Li ◽  
Gangtie Lei ◽  
...  

Abstract Vanadium pentoxide (V2 O5) nanoplatelet was prepared through an exfoliation method by using β-cyclodextrin (β-CD) as intercalating template. To improve its electrochemical performance in the aqueous electrolyte, the nanoplatelet was coated with amorphous AlPO4 by sol-gel method. The effect of this coating layer on the rate and cycling properties is investigated by cyclic voltammetry and galvanostatic charge-discharge. The 1.6 % AlPO4-coated sample could deliver an initial capacity of 128 mAh g–1 at 0.1 C rate, and remain 99 % of the initial one after 50 cycles. The discharge capacities in the first cycle are 119, 113, and 104 mAh g–1 at the rates of 0.3, 1.5, and 3 C, respectively. The corresponding maintaining ratios are 98, 92, and 87 % after 50 cycles. The results suggest the AlPO4-coated V2 O5 nanoplatelet has good rate capability and cycling performance, indicating its promising application as an anode material in aqueous rechargeable lithium batteries.


2001 ◽  
Vol 216 ◽  
pp. 123-126 ◽  
Author(s):  
Kiyoshi Kanamura ◽  
Minori Fujisaki ◽  
Young Ho Rho ◽  
Takao Umegaki

2014 ◽  
Vol 989-994 ◽  
pp. 316-319 ◽  
Author(s):  
Jing Zhu ◽  
Yong Guang Liu ◽  
Qing Qing Tian ◽  
Ling Wang ◽  
Ji Lin Cao

Li0.95Na0.05Ti2(PO4)3/C nanocomposite was prepared by sol-gel method.The structure and morphology of the samples were characterized by XRD, SEM which showed the particles had typical NASICON structure and diameter range from 400~500nm. The electrochemical performance were tested by cyclic voltammetry and galvanostatic charge–discharge. Results show Li0.95Na0.05Ti2(PO4)3/C nanocomposite exhibitsmuch better electrochemical performance than bare Li0.95Na0.05Ti2(PO4)3.


2011 ◽  
Vol 399-401 ◽  
pp. 1447-1450
Author(s):  
Zhi Yong Yu ◽  
Han Xing Liu

The layered LiNi1/2Mn1/2O2 cathode materials were synthesized by a sol gel method. The effects of calcination temperature and time on the structural and electrochemical properties of the LiNi1/2Mn1/2O2 were investigated. The prepared samples were characterized by X-ray diffraction (XRD) and electrochemical analysis. The results revealed that the layered LiNi1/2Mn1/2O2 material could be optimal synthesized at temperature of 900°C for 10h. The sample prepared under the above conditions has the highest initial discharge capacity of 151 mAh/g and showed no dramatic capacity fading during 20 cycles between 2.5-4.5V at a current rate of 20mA/g.


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