State Key Laboratory of Optoelectronic Materials and Technologies, School of Materials and Engineering, The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-Sen (Zhongshan) University , Guangzhou 510275, China.
ACS Appl Mater Interfaces. 2017 Aug 16;9(32):26818-26825. doi: 10.1021/acsami.7b06394. Epub 2017 Aug 4.
A composed material of amorphous carbon nanotubes (ACNTs) and encapsulated transition metal oxide (TMOs) nanoparticles was prepared by a common thermophysics effect, which is named the Marangoni effect, and a simple anneal process. The prepared ropy solution would form a Marangoni convection and climb into the channel of anodic aluminum oxide template (AAO) spontaneously. The ingenious design of the preparation method determined a distinctive structure of TMOs nanoparticles with a size of ∼5 nm and amorphous carbon coated outside full in the ACNTs. Here we prepared the ferric oxide (FeO) nanoparticles and FeO mixed with manganic oxide (FeO&MnO) nanoparticles encapsulated in ACNTs as two anode materials of lithium ion batteries' the TMOs-filled ACNTs presented an evolutionary electrochemical performance in some respects of highly reversible capacity and excellent cycling stability (880 mA h g after 150 cycles).
一种由无定形碳纳米管（ACNTs）和封装的过渡金属氧化物（TMO）纳米颗粒组成的复合材料，是通过一种常见的热物理效应——马兰戈尼效应和简单的退火过程制备的。制备的粘稠溶液会自发形成马兰戈尼对流，并爬入阳极氧化铝模板（AAO）的通道中。这种巧妙的制备方法设计决定了 TMO 纳米颗粒的独特结构，其尺寸约为 5nm，并且完整地涂覆在外层的无定形碳纳米管中。在这里，我们制备了氧化铁（FeO）纳米颗粒和 FeO 与氧化锰（FeO&MnO）纳米颗粒混合封装在 ACNTs 中作为锂离子电池的两个阳极材料，TMO 填充的 ACNTs 在一些方面表现出了进化的电化学性能，具有高可逆容量和优异的循环稳定性（150 次循环后为 880mAh/g）。
