کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1265409 | 972217 | 2012 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Ultrasound-assisted synthesis of Li-rich mesoporous LiMn2O4 nanospheres for enhancing the electrochemical performance in Li-ion secondary batteries Ultrasound-assisted synthesis of Li-rich mesoporous LiMn2O4 nanospheres for enhancing the electrochemical performance in Li-ion secondary batteries](/preview/png/1265409.png)
The hierarchically structured mesoporous LiMn2O4 (LMO) nanospheres were synthesized using a template-free self-assembly process that was coupled with ultrasound (U). The ultrasound technique suggested here is very powerful for controlling an ordered nanostructure and improving crystallinity with large single-crystalline domains. Owing to the hierarchical mesoporous structure and high crystallinity, U-LMO provides an excellent rate capability and cycle stability with a capacity retention of more than 98% up to 50 cycles at a 0.2 C rate. Here, we demonstrate that mesoporous U-LMO nanospheres were fabricated to enhance the electrochemical performance and protect it from structurally significant collapsing because of high crystallinity.
► Hierarchically structured mesoporous LiMn2O4 nanospheres.
► Simple and cost effective synthetic method using ultrasonic waves.
► Ultrasonic waves increase single-crystalline domain size and enhance crystallinity.
► Mesoporous nanostructures with high crystallinity can improve rate capability and cyclability.
Journal: Ultrasonics Sonochemistry - Volume 19, Issue 3, May 2012, Pages 627–631