Highly dispersed Ag nanoparticles (<10 nm) deposited on nanocrystalline Li4Ti5O12 demonstrating high-rate charge/discharge capability for lithium-ion battery
Highly dispersed Ag nanoparticles (<10 nm) deposited on nanocrystalline Li4Ti5O12 demonstrating high-rate charge/discharge capability for lithium-ion battery
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DOI：
10.1016/j.jpowsour.2012.01.068
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发表时间：
2012-05
影响因子：
9.2
通讯作者：
Zhimin Liu;Naiqing Zhang;Zhijun Wang;Kening Sun
中科院分区：
文献类型：
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作者：
Zhimin Liu;Naiqing Zhang;Zhijun Wang;Kening Sun
采用简易化学沉积（艾德）法制备了Li 4 Ti 5 O 12（LTO）/Ag复合材料，并对其电化学性能进行了研究。纳米级Ag颗粒（<10 nm）在纳米级LTO（~ 90 nm）表面均匀分散。LTO/Ag纳米复合材料在30 C下在1-2.5V（相对于Li+/Li）电压范围内显示出131 mAhg − 1的优异高倍率容量。此外，该纳米复合材料还表现出优异的循环稳定性，在不同速率下120次充电/放电循环后仍保持其初始容量的98%以上。
A Li4Ti5O12(LTO)/Ag composite is prepared via a facile electroless deposition (ED) process, and the electrochemical performance is examined for lithium-ion battery application. The nanosized Ag particles (<10nm) are well dispersed on the surface of the nanocrystalline LTO (∼90nm). The LTO/Ag nanocomposite displays an excellent high-rate capacity of 131mAhg−1at 30C within the voltage range of 1–2.5V (versus Li+/Li). Furthermore, the nanocomposite also exhibits excellent cycle stability, retaining over 98% of its initial capacity after 120 charge/discharge cycles at varying rates.