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Li6Zr2O7 interstitial lithium-ion solid electrolyte
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DOI：10.1016/j.electacta.2013.04.029.png)
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摘要
En 中文
Li6Zr2O7 crystallizes in a framework structure with Li occupying 1D channels in three distinguishable square-pyramidal sites. Rao et al. have reported a factor 100 increase in Li+ conductivity at 300 degrees C by substitution of Ta(V) for Zr(IV). We demonstrate here that a similar enhancement in Li-ion conductivity can also be achieved by incorporation of interstitial Li in the formula unit Li6+xZr2-xMxO7 (M=Y or In). Insertion of x=0.15 Li in the form of Li6+xZr2-xMxO7 can be obtained by simple solid state synthesis. In order to know the limit of Li insertion into Li6Zr2O7, we demonstrated electrochemical insertion into Li6+xZr1.5Ti0.5O7 of excess Li to at least x approximate to 0.17 at room temperature. The Lithium activation energy was 0.63 eV for Li6.15Zr1.85Y0.15O7. Published by Elsevier Ltd.
Keyword:
Electrolyte
Ceramic
Li+ conductivity
期刊
IF:
5.6
论文数:
4.1W
被引数:
13.2W
机构
引用论文
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