Electrochemical Behavior of Spherical LiFePO 4 /C Nanomaterial in Aqueous Electrolyte, and Novel Aqueous Rechargeable Lithium Battery with LiFePO 4 /C anode

2015 ◽  
Vol 177 ◽  
pp. 277-282 ◽  
Author(s):  
Xiaoyuan Zeng ◽  
Quanbin Liu ◽  
Meifeng Chen ◽  
Limin Leng ◽  
Ting Shu ◽  
...  
2010 ◽  
Vol 03 (03) ◽  
pp. 151-154 ◽  
Author(s):  
QUTING QU ◽  
GAOJUN WANG ◽  
LILI LIU ◽  
SSHU TIAN ◽  
YI SHI ◽  
...  

LiMn 2 O 4 was prepared by a solid-state reaction, and for the first time its electrochemical behavior in the organic and aqueous electrolytes were compared. Since the host structure is the same, the intercalation and deintercalation behavior does not change, and the diffusion coefficient of Li + ions are in the same range. However, due to much higher ionic conductivity of the aqueous electrolyte, its reversible redox behavior at high scan rate is much better than in the organic electrolyte. The reversible capacity in the aqueous electrolyte is 85 mAh ⋅ g-1 at the current density of 50 mA ⋅ g-1, and 22 mAh ⋅ g-1 (26% of the normal capacity) when the current density is up to 10,000 mA ⋅ g-1 (118 C). This shows that aqueous rechargeable lithium battery (ARLB) have very high-power density or excellent rate capability, and good cycling behavior.


2003 ◽  
Vol 788 ◽  
Author(s):  
Samuel T. Lutta ◽  
Hong Dong ◽  
Peter Y. Zavalij ◽  
M. Stanley Whittingham

ABSTRACTThe sol gel reaction of NH4VO3 and polymethylmethacrylate (PMMA) template followed by hydrothermal treatment formed (NH4)xV2O5-Δ.nH2O rods. TGA, SEM, XRD and FTIR characterized this compound. Heating (NH4)xV2O5-Δ.nH2O in oxygen and nitrogen at 250 °C and 300 °C respectively resulted in the formation of vanadium oxides nanofibers of V3O7 and V2O5. Performance of these compounds as cathode in rechargeable lithium battery was investigated in a LiPF6/mixed carbonate electrolyte. The materials show good cycling with capacity greater than 130mAh/g, which translates to the insertion of 0.5 moles of Li+ per vanadium of the active material.


2013 ◽  
Vol 1 (46) ◽  
pp. 14713 ◽  
Author(s):  
Yuyang Hou ◽  
Xujiong Wang ◽  
Yusong Zhu ◽  
Chenglin Hu ◽  
Zheng Chang ◽  
...  

1997 ◽  
Vol 7 (C2) ◽  
pp. C2-1243-C2-1244 ◽  
Author(s):  
I. Nakai ◽  
K. Takahash ◽  
Y. Shiraishi ◽  
T. Nakagome

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