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首页> 外文期刊>European Journal of Glass Science and Technology, PartA. Glass Technology >Electrochemical performance of SnO-B2O3-V2O5 glasses as negative electrodes for lithium secondary batteries
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Electrochemical performance of SnO-B2O3-V2O5 glasses as negative electrodes for lithium secondary batteries

机译:SnO-B2O3-V2O5玻璃作为锂二次电池负极的电化学性能

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摘要

Glasses in the system SnO-B2O3-V2O5 were prepared using a planetary hall mill apparatus. Amorphous 45SnO.45B2O3.10V2O5 (mol%) powder was obtained by ball milling for 50 hat a rotation speed of 370 rpm. The glass transition was observed at about 440°C by differential thermal analysis. Electrochemical cells using a conventional liquid electrolyte (1 m LiPF6 in EC-DEC) were assembled. The cell with the 45SnO.45B2O3.10V2O5 glass as a working electrode exhibited an initial capacity of 610 mAhg~(-1), which was smaller than the capacity of the cell using a 50SnO.50B2O3 electrode (710 mAh g~(-1)). On the other hand, the glass with V2O5 retained a larger capacity of 330 mAh g~(-1) than the glass without V2O5(180 mAhg~(-1)) after 20 cycles. The addition of V2O5 played an important role in enhancing the cycle performance of cells using SnO-based glass electrodes.
机译:使用行星式霍尔磨设备制备系统SnO-B2O3-V2O5中的玻璃。通过球磨机以370 rpm的转速旋转50 Hat,获得非晶态45SnO.45B2O3.10V2O5(mol%)粉末。通过差热分析在约440℃下观察到玻璃化转变。使用常规液体电解质(在EC-DEC中为1 m LiPF6)组装电化学电池。以45SnO.45B2O3.10V2O5玻璃为工作电极的电池的初始容量为610 mAhg〜(-1),比使用50SnO.50B2O3电极的电池容量(710 mAh g〜(-1)小))。另一方面,在20个循环之后,具有V 2 O 5的玻璃比没有V 2 O 5的玻璃(180 mAhg〜(-1))保持更大的容量330 mAh g〜(-1)。 V2O5的添加在使用SnO基玻璃电极增强电池的循环性能方面起着重要作用。

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