کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1285986 | 973169 | 2007 | 6 صفحه PDF | دانلود رایگان |
Interfacial lithium-ion transfer at the LiMn2O4 thin film electrode/aqueous solution was investigated. The cyclic voltammograms of the film electrode conducted in the aqueous solution was similar to an adsorption-type voltammogram of reversible system, suggesting that fast charge transfer reaction proceed in the aqueous solution system. We found that the activation energy for this interfacial lithium-ion transfer reaction obtains 23–25 kJ mol−1, which is much smaller than that in the propylene carbonate solution (50 kJ mol−1). This small activation energy will be responsible for the fast interfacial lithium-ion transfer reaction in the aqueous solution. These results suggest that fast lithium insertion/extraction reaction can be realized by decreasing the activation energy for interfacial lithium-ion transfer reaction.
Journal: Journal of Power Sources - Volume 174, Issue 2, 6 December 2007, Pages 695–700